logging in or signing up 08 12 05 Finding ofThe Quarter Gabir Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 28 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: August 14, 2007 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript An Update on the “Finding of the Quarter” ProjectPresented byDavid Sellers: An Update on the 'Finding of the Quarter' Project Presented by David Sellers Technical Expression of the Chapter Mission Statement: Technical Expression of the Chapter Mission Statement Provide a forum for professional exchange for members Facilitate the evolution of building commissioning Promote industry trust and enthusiasm Promote education and training To promote, organize, and enhance Building Commissioning in our region How It Would Work wwww : How It Would Work wwww Findings solicited by a NW BCA Chapter committee All noteworthy findings are entered into the on-line data base Every quarter: The outstanding finding from preceding quarter is identified The submitter receives the Finding of the Quarter Award Presented at the quarterly chapter meeting Includes a prize! How It Would WorkData base attributes : How It Would Work Data base attributes Simple Easy to penetrate Technical focus A BCA sponsored commissioning resource Fostering Communication Educational Promoting the BCA Promoting the Commissioning Industry Fostering Business How It Would Work Two levels of Data base access : How It Would Work Two levels of Data base access Level One Open to General Public Query the data base on findings of interest A 'For More Information' link Allows BCA members to log into Level 2 Allows Non-members to join Allows Owners to link to the membership roster Level Two More detailed information answering the following questions: How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Information A Demonstration: A Demonstration The following sequence of slides will step through a mock-up of what the on-line data base might look like. Generally, the slides will automatically advance after allowing some time for you to read them Click or press the space bar when prompted to advance the presentation. If things stop or are going to slowly for you, click press the space bar to move to the next step in the sequence Click your mouse or press the space bar when you are ready to run the demonstration Slide7: Welcome to the Building Commissioning Association Northwest Chapter’s Commissioning Findings Database Click Here to See Findings This is what the opening screen would like like when you logged into the site. Your initial query of the data base would begin here. (Click or press the space bar to continue.) Slide8: Welcome to the Building Commissioning Association Northwest Chapter’s Commissioning Findings Database The following findings matched your search criteria Running Condenser Pump At Low Speed For One Chiller Operation Saves Energy Refining Design Flow Criteria And An Impeller Trim Saves Energy Performing A Pump Test And Trimming An Impeller Saves Energy And Improves Reliability Modifying A Water Feature Wier Saves Energy Scheduling A Water Feature Pump Saves Energy andlt;Click here for more findingsandgt; Once you had made your selections, the data base would show a list of relevant findings. (Click or press the space bar to continue.) Slide9: Looking for a commissioning provider in your area? Want to learn more about the details, calculations, and savings associated with this finding? Click on the BCA logo to log into the data base, join the BCA, or obtain a list of members in your area. Modifying A Water Feature Weir Saves Energy Increasing the height of the weir that controls the level in the upper pool on the left side of the water feature (red circle) allowed one of two parallel pumps to maintain flow over all water falls. Before the adjustment, two pumps had to run because slight differences in the height of the left and right upper pools (blue circles) caused flow to be lost on the right water fall (yellow circle). This is the screen that would be available to the general public. If you wanted to know more, you would be re-directed back to a page where you could log in if you were a BCA member or join if you were not. (Click or press the space bar to continue.) Slide10: Database Access Options Av8rdave BCA Members Log In Here for Immediate Access User Name ****** Password Non-Members Click Here to Join BAC and Receive its Many Benefits, Including Full Data Base Access Are You an Owner Looking for a Knowledgeable Provider? Click here to be connected to a searchable index of Building Commissioning Association Members This is where you would log in if you were a member or be re-directed to a location on the site where you could join. As soon as you were a member, you would be given access to the data base. Owners could connect to a list of BCA members from this location if they were looking for a provider. (Click or press the space bar to continue.) Slide11: How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Modifying A Water Feature Weir Saves Energy Increasing the height of the weir that controls the level in the upper pool on the left side of the water feature (red circle) allowed one of two parallel pumps to maintain flow over all water falls. Before the adjustment, two pumps had to run because slight differences in the height of the left and right upper pools (blue circles) caused flow to be lost on the right water fall (yellow circle). Click on the topic of interest to learn more. Now, in addition to having the general information, you also have some choices that let you find out more. The following slides will demonstrate what this information might look like. (Click or press the space bar to continue.) Slide12: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide13: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours While some water features require very precise flow rates to achieve the desired visual result, many can achieve the desired esthetics in terms of appearance and sound at a number of different flow rates. In many cases, the sound is actually more important than the visual appearance of the flow. It is also not uncommon for the area associated with a water feature to be unoccupied for some portion of the day, allowing the water feature to be shut down during those hours. In this particular instance, the tropical resort setting created by the waterfall created an aesthetic that was both visually and aurally important. However, the design of the waterfalls was such that it was suspected that a specific flow rate was not necessary to achieve the desired effect, thus opening the door to experimentation In terms of operating hours, the staff had experimented with turning one or both pumps off and discovered that with one pump off, they lost flow over some of the falls. With both pumps off, they received complaints from guests who wanted to fall asleep to the sound of the falling water. Thus, they tended to run both pumps round the clock Return to previous page Slide14: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide15: Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Because of the square law relationship associated with flow in piping, shutting down one of two parallel pumps does not cut the system flow in half. Rather, it will typically stabilize at a flow rate somewhere between 60 and 75% of the flow achieved with two pumps in operation, depending upon how much of the piping circuit and associated pressure drop was shared by both pumps vs. serving only one or the other pump. Clicking on this hyperlink will run a short PowerPoint show that illustrates the technical details behind this. Frequently, this characteristic can be exploited when dealing with water feature pumping systems where the design called for both pumps to operate but the flow rate required to achieve the desired aesthetics’ is flexible. Return to previous page Slide16: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide17: Testing and Assessment A simple test allowed us to assess the opportunity. We documented conditions with two pumps running and then shut down one pump and contrasted what happened with the pressures, motor current and flow over the water falls. Clicking on this hyperlink will run a short video of the falls with two pumps running. Clicking on this hyperlink will run a short video of the falls with only one pump running. What we discovered was that the appearance, flows and currents didn’t change that much. But, the falls are created by water cascading through a series of pools on each side of the central pool, which serves the central waterfall. Several of the intermediate pools serve as sources for some of the smaller water falls to the right and left of the main fall. Weirs control the flow from one pool to the next and thus level in each of the pools and the flow rate over the fall associated with it. When we shut down one pump, the distribution and flow rate of the water in the system changed enough that we lost flow over the first fall on the right side (as viewed facing the falls). All indication are that this could be corrected by adjusting the height of the weir between the pool where flow was lost and the pool below it. Making such an adjustment would allow the same aesthetics to be maintained while operating only one pump. Return to previous page Slide18: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide19: Why Did it Happen? This finding is not really the result of a failure of oversight of any kind. Rather it is the result of exploiting a previously unrecognized characteristic of the system. Return to previous page Slide20: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide21: What Can be Done? The proposed implementation will involve a two pronged approach. Via experimentation with landscaping rocks, the weir serving the pool and fall that looses flow when one pump is shut down will be adjusted so flow over the fall occurs under this condition. Once a suitable configuration is discovered, the rocks will be cemented in place and the one pump operating mode will be initiated as the normal mode. The building’s DDC control system will be extended to the equipment room serving the pumps to allow remote monitoring and control of the system. This will allow the pumps to be alternated automatically, allow them to be scheduled off completely at night during cooler weather when the sound of the falling water is less likely to be missed by the guests and improve persistence. Clicking on this hyperlink will open the spreadsheet used to project the cost of implementation. Note that this finding was part of a package selected for implementation by the facility. some of the implementation labor is covered a staff position included with the over-all package and is not reflected directly in the bottom line of this cost projection. Return to previous page Slide22: Return to previous page Slide23: What Can be Done? The proposed implementation will involve a two pronged approach. Via experimentation with landscaping rocks, the weir serving the pool and fall that looses flow when one pump is shut down will be adjusted so flow over the fall occurs under this condition. Once a suitable configuration is discovered, the rocks will be cemented in place and the one pump operating mode will be initiated as the normal mode. The building’s DDC control system will be extended to the equipment room serving the pumps to allow remote monitoring and control of the system. This will allow the pumps to be alternated automatically, allow them to be scheduled off completely at night during cooler weather when the sound of the falling water is less likely to be missed by the guests and improve persistence. Clicking on this hyperlink will open the spreadsheet used to project the cost of implementation. Note that this finding was part of a package selected for implementation by the facility. some of the implementation labor is covered a staff position included with the over-all package and is not reflected directly in the bottom line of this cost projection. Return to previous page Slide24: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide25: What’s It Worth? The savings associated with this finding are a direct function of eliminating the operation of one pump. Thus they can be assessed by multiplying the pump kW by the number of hours of operation that will be eliminated. The real trick in our case was coming up with how many hours of operation would be eliminated. All thought the tendency is to run both pumps 24/7 for aesthetics, the staff does on occasion make and effort to turn them off from midnight until 6 am. To be conservative, we assumed this was the case year round for our assessment. Clicking on this hyperlink will open the spreadsheet used to project the savings potential. Return to previous page Slide26: Return to previous page Slide27: What’s It Worth? The savings associated with this finding are a direct function of eliminating the operation of one pump. Thus they can be assessed by multiplying the pump kW by the number of hours of operation that will be eliminated. The real trick in our case was coming up with how many hours of operation would be eliminated. All thought the tendency is to run both pumps 24/7 for aesthetics, the staff does on occasion make and effort to turn them off from midnight until 6 am. To be conservative, we assumed this was the case year round for our assessment. Clicking on this hyperlink will open the spreadsheet used to project the savings potential. Return to previous page Slide28: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide29: Will It Last? Research published in Strategies for Improving Persistence of Commissioning Benefits indicates that things like scheduling had lower persistence than things where actual hardware was modified. But, by providing an extension of the buildings DDC system to control and monitor the pumps, we will be able to program alarms that will alert the operating staff if both pumps are running when only one should run or if any pump is running when it should be off. If properly implemented and supported by training, we feel that this approach will lead to a high level of persistence for the measure. (For those who are interested, Strategies for Improving Persistence of Commissioning Benefits can be downloaded from the California Commissioning Collaborative on-line library at www.CaCx.org. Return to previous page Slide30: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide31: Contact Information If you have questions or want more information on this finding, contact: David Sellers Senior Engineer Portland Energy Conservation Incorporated 1400 SW 5th Avenue Suite 700 Portland, Oregon 97201 503-505-4473 Dsellers@PECI.org Return to previous page Current Status and Next Steps: Current Status and Next Steps Preliminary cost projections obtained Mock-up developed Web developer projected cost = $5,000 Web page development Initial posts BCA site links Planning to solicit NEEA support Initial discussions indicate interest Need to develop a proposal and mock-up Current Status and Next Steps: Current Status and Next Steps Preliminary cost projections obtained Mock-up developed Proposal first draft in development Approximately 50% complete Review and comment by the board Targeting sending it to NEEA in September Current Status and Next Steps: Current Status and Next Steps Preliminary cost projections obtained Mock-up developed Proposal first draft in development Proposed NW Chapter responsibilities Develop a spec Soliciting bids from web page developers Coordinating with the developer Providing server space Form a Finding of the Quarter Committee Current Status and Next Steps: Current Status and Next Steps Preliminary cost projections obtained Mock-up developed Proposal first draft in development Proposed NW Chapter responsibilities The Finding of the Quarter Committee Populating the data base Initially – Voluntary submissions from the board Ultimately – Official entries Select a quarterly winner Awarding the prize at quarterly meetings Obtain prize sponsor Help the recipient with a presentation Interested?: Interested? We’re looking for committee members Contact your friendly local board member! A Few Noteworthy Bits of BCA Information: A Few Noteworthy Bits of BCA Information The Annual Conference is on the West Coast! Learn Techniques Meet other Providers, Owners, and Researchers Share Ideas Attend the Trade Show Eat, Drink and Be Merry! Go to www.PECI.org/NCBC for details and registration A Few Noteworthy Bits of BCA Information: A Few Noteworthy Bits of BCA Information The BCA Annual Meeting will Occur During the Conference Tuesday evening, April 18, 2006 At the Tonga Room A Few Noteworthy Bits of BCA Information: A Few Noteworthy Bits of BCA Information The BCA Website Now Has a Classified Adds Section You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
08 12 05 Finding ofThe Quarter Gabir Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 28 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: August 14, 2007 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript An Update on the “Finding of the Quarter” ProjectPresented byDavid Sellers: An Update on the 'Finding of the Quarter' Project Presented by David Sellers Technical Expression of the Chapter Mission Statement: Technical Expression of the Chapter Mission Statement Provide a forum for professional exchange for members Facilitate the evolution of building commissioning Promote industry trust and enthusiasm Promote education and training To promote, organize, and enhance Building Commissioning in our region How It Would Work wwww : How It Would Work wwww Findings solicited by a NW BCA Chapter committee All noteworthy findings are entered into the on-line data base Every quarter: The outstanding finding from preceding quarter is identified The submitter receives the Finding of the Quarter Award Presented at the quarterly chapter meeting Includes a prize! How It Would WorkData base attributes : How It Would Work Data base attributes Simple Easy to penetrate Technical focus A BCA sponsored commissioning resource Fostering Communication Educational Promoting the BCA Promoting the Commissioning Industry Fostering Business How It Would Work Two levels of Data base access : How It Would Work Two levels of Data base access Level One Open to General Public Query the data base on findings of interest A 'For More Information' link Allows BCA members to log into Level 2 Allows Non-members to join Allows Owners to link to the membership roster Level Two More detailed information answering the following questions: How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Information A Demonstration: A Demonstration The following sequence of slides will step through a mock-up of what the on-line data base might look like. Generally, the slides will automatically advance after allowing some time for you to read them Click or press the space bar when prompted to advance the presentation. If things stop or are going to slowly for you, click press the space bar to move to the next step in the sequence Click your mouse or press the space bar when you are ready to run the demonstration Slide7: Welcome to the Building Commissioning Association Northwest Chapter’s Commissioning Findings Database Click Here to See Findings This is what the opening screen would like like when you logged into the site. Your initial query of the data base would begin here. (Click or press the space bar to continue.) Slide8: Welcome to the Building Commissioning Association Northwest Chapter’s Commissioning Findings Database The following findings matched your search criteria Running Condenser Pump At Low Speed For One Chiller Operation Saves Energy Refining Design Flow Criteria And An Impeller Trim Saves Energy Performing A Pump Test And Trimming An Impeller Saves Energy And Improves Reliability Modifying A Water Feature Wier Saves Energy Scheduling A Water Feature Pump Saves Energy andlt;Click here for more findingsandgt; Once you had made your selections, the data base would show a list of relevant findings. (Click or press the space bar to continue.) Slide9: Looking for a commissioning provider in your area? Want to learn more about the details, calculations, and savings associated with this finding? Click on the BCA logo to log into the data base, join the BCA, or obtain a list of members in your area. Modifying A Water Feature Weir Saves Energy Increasing the height of the weir that controls the level in the upper pool on the left side of the water feature (red circle) allowed one of two parallel pumps to maintain flow over all water falls. Before the adjustment, two pumps had to run because slight differences in the height of the left and right upper pools (blue circles) caused flow to be lost on the right water fall (yellow circle). This is the screen that would be available to the general public. If you wanted to know more, you would be re-directed back to a page where you could log in if you were a BCA member or join if you were not. (Click or press the space bar to continue.) Slide10: Database Access Options Av8rdave BCA Members Log In Here for Immediate Access User Name ****** Password Non-Members Click Here to Join BAC and Receive its Many Benefits, Including Full Data Base Access Are You an Owner Looking for a Knowledgeable Provider? Click here to be connected to a searchable index of Building Commissioning Association Members This is where you would log in if you were a member or be re-directed to a location on the site where you could join. As soon as you were a member, you would be given access to the data base. Owners could connect to a list of BCA members from this location if they were looking for a provider. (Click or press the space bar to continue.) Slide11: How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Modifying A Water Feature Weir Saves Energy Increasing the height of the weir that controls the level in the upper pool on the left side of the water feature (red circle) allowed one of two parallel pumps to maintain flow over all water falls. Before the adjustment, two pumps had to run because slight differences in the height of the left and right upper pools (blue circles) caused flow to be lost on the right water fall (yellow circle). Click on the topic of interest to learn more. Now, in addition to having the general information, you also have some choices that let you find out more. The following slides will demonstrate what this information might look like. (Click or press the space bar to continue.) Slide12: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide13: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours While some water features require very precise flow rates to achieve the desired visual result, many can achieve the desired esthetics in terms of appearance and sound at a number of different flow rates. In many cases, the sound is actually more important than the visual appearance of the flow. It is also not uncommon for the area associated with a water feature to be unoccupied for some portion of the day, allowing the water feature to be shut down during those hours. In this particular instance, the tropical resort setting created by the waterfall created an aesthetic that was both visually and aurally important. However, the design of the waterfalls was such that it was suspected that a specific flow rate was not necessary to achieve the desired effect, thus opening the door to experimentation In terms of operating hours, the staff had experimented with turning one or both pumps off and discovered that with one pump off, they lost flow over some of the falls. With both pumps off, they received complaints from guests who wanted to fall asleep to the sound of the falling water. Thus, they tended to run both pumps round the clock Return to previous page Slide14: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide15: Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Because of the square law relationship associated with flow in piping, shutting down one of two parallel pumps does not cut the system flow in half. Rather, it will typically stabilize at a flow rate somewhere between 60 and 75% of the flow achieved with two pumps in operation, depending upon how much of the piping circuit and associated pressure drop was shared by both pumps vs. serving only one or the other pump. Clicking on this hyperlink will run a short PowerPoint show that illustrates the technical details behind this. Frequently, this characteristic can be exploited when dealing with water feature pumping systems where the design called for both pumps to operate but the flow rate required to achieve the desired aesthetics’ is flexible. Return to previous page Slide16: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide17: Testing and Assessment A simple test allowed us to assess the opportunity. We documented conditions with two pumps running and then shut down one pump and contrasted what happened with the pressures, motor current and flow over the water falls. Clicking on this hyperlink will run a short video of the falls with two pumps running. Clicking on this hyperlink will run a short video of the falls with only one pump running. What we discovered was that the appearance, flows and currents didn’t change that much. But, the falls are created by water cascading through a series of pools on each side of the central pool, which serves the central waterfall. Several of the intermediate pools serve as sources for some of the smaller water falls to the right and left of the main fall. Weirs control the flow from one pool to the next and thus level in each of the pools and the flow rate over the fall associated with it. When we shut down one pump, the distribution and flow rate of the water in the system changed enough that we lost flow over the first fall on the right side (as viewed facing the falls). All indication are that this could be corrected by adjusting the height of the weir between the pool where flow was lost and the pool below it. Making such an adjustment would allow the same aesthetics to be maintained while operating only one pump. Return to previous page Slide18: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide19: Why Did it Happen? This finding is not really the result of a failure of oversight of any kind. Rather it is the result of exploiting a previously unrecognized characteristic of the system. Return to previous page Slide20: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide21: What Can be Done? The proposed implementation will involve a two pronged approach. Via experimentation with landscaping rocks, the weir serving the pool and fall that looses flow when one pump is shut down will be adjusted so flow over the fall occurs under this condition. Once a suitable configuration is discovered, the rocks will be cemented in place and the one pump operating mode will be initiated as the normal mode. The building’s DDC control system will be extended to the equipment room serving the pumps to allow remote monitoring and control of the system. This will allow the pumps to be alternated automatically, allow them to be scheduled off completely at night during cooler weather when the sound of the falling water is less likely to be missed by the guests and improve persistence. Clicking on this hyperlink will open the spreadsheet used to project the cost of implementation. Note that this finding was part of a package selected for implementation by the facility. some of the implementation labor is covered a staff position included with the over-all package and is not reflected directly in the bottom line of this cost projection. Return to previous page Slide22: Return to previous page Slide23: What Can be Done? The proposed implementation will involve a two pronged approach. Via experimentation with landscaping rocks, the weir serving the pool and fall that looses flow when one pump is shut down will be adjusted so flow over the fall occurs under this condition. Once a suitable configuration is discovered, the rocks will be cemented in place and the one pump operating mode will be initiated as the normal mode. The building’s DDC control system will be extended to the equipment room serving the pumps to allow remote monitoring and control of the system. This will allow the pumps to be alternated automatically, allow them to be scheduled off completely at night during cooler weather when the sound of the falling water is less likely to be missed by the guests and improve persistence. Clicking on this hyperlink will open the spreadsheet used to project the cost of implementation. Note that this finding was part of a package selected for implementation by the facility. some of the implementation labor is covered a staff position included with the over-all package and is not reflected directly in the bottom line of this cost projection. Return to previous page Slide24: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide25: What’s It Worth? The savings associated with this finding are a direct function of eliminating the operation of one pump. Thus they can be assessed by multiplying the pump kW by the number of hours of operation that will be eliminated. The real trick in our case was coming up with how many hours of operation would be eliminated. All thought the tendency is to run both pumps 24/7 for aesthetics, the staff does on occasion make and effort to turn them off from midnight until 6 am. To be conservative, we assumed this was the case year round for our assessment. Clicking on this hyperlink will open the spreadsheet used to project the savings potential. Return to previous page Slide26: Return to previous page Slide27: What’s It Worth? The savings associated with this finding are a direct function of eliminating the operation of one pump. Thus they can be assessed by multiplying the pump kW by the number of hours of operation that will be eliminated. The real trick in our case was coming up with how many hours of operation would be eliminated. All thought the tendency is to run both pumps 24/7 for aesthetics, the staff does on occasion make and effort to turn them off from midnight until 6 am. To be conservative, we assumed this was the case year round for our assessment. Clicking on this hyperlink will open the spreadsheet used to project the savings potential. Return to previous page Slide28: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide29: Will It Last? Research published in Strategies for Improving Persistence of Commissioning Benefits indicates that things like scheduling had lower persistence than things where actual hardware was modified. But, by providing an extension of the buildings DDC system to control and monitor the pumps, we will be able to program alarms that will alert the operating staff if both pumps are running when only one should run or if any pump is running when it should be off. If properly implemented and supported by training, we feel that this approach will lead to a high level of persistence for the measure. (For those who are interested, Strategies for Improving Persistence of Commissioning Benefits can be downloaded from the California Commissioning Collaborative on-line library at www.CaCx.org. Return to previous page Slide30: How Was it Found? This finding was initially identified in the course of the scoping walk-through of the project. The indicators leading to its identification included: Water Features are Often Flexible in Terms of Flow Rate and Operating Hours Parallel pumps Often Represent Opportunities to Deliver 65 – 75% of the Two Pump Design Flow by Operating One Pump Follow the links to find out more about each of the preceding topics Testing and Assessment Click on this hyperlink to find out more about the testing and assessment techniques associated with this finding. How was it found? Why did it happen? What can be done? What’s it worth? Will it last? Contact Info. Click on the topic of interest to learn more. Slide31: Contact Information If you have questions or want more information on this finding, contact: David Sellers Senior Engineer Portland Energy Conservation Incorporated 1400 SW 5th Avenue Suite 700 Portland, Oregon 97201 503-505-4473 Dsellers@PECI.org Return to previous page Current Status and Next Steps: Current Status and Next Steps Preliminary cost projections obtained Mock-up developed Web developer projected cost = $5,000 Web page development Initial posts BCA site links Planning to solicit NEEA support Initial discussions indicate interest Need to develop a proposal and mock-up Current Status and Next Steps: Current Status and Next Steps Preliminary cost projections obtained Mock-up developed Proposal first draft in development Approximately 50% complete Review and comment by the board Targeting sending it to NEEA in September Current Status and Next Steps: Current Status and Next Steps Preliminary cost projections obtained Mock-up developed Proposal first draft in development Proposed NW Chapter responsibilities Develop a spec Soliciting bids from web page developers Coordinating with the developer Providing server space Form a Finding of the Quarter Committee Current Status and Next Steps: Current Status and Next Steps Preliminary cost projections obtained Mock-up developed Proposal first draft in development Proposed NW Chapter responsibilities The Finding of the Quarter Committee Populating the data base Initially – Voluntary submissions from the board Ultimately – Official entries Select a quarterly winner Awarding the prize at quarterly meetings Obtain prize sponsor Help the recipient with a presentation Interested?: Interested? We’re looking for committee members Contact your friendly local board member! A Few Noteworthy Bits of BCA Information: A Few Noteworthy Bits of BCA Information The Annual Conference is on the West Coast! Learn Techniques Meet other Providers, Owners, and Researchers Share Ideas Attend the Trade Show Eat, Drink and Be Merry! Go to www.PECI.org/NCBC for details and registration A Few Noteworthy Bits of BCA Information: A Few Noteworthy Bits of BCA Information The BCA Annual Meeting will Occur During the Conference Tuesday evening, April 18, 2006 At the Tonga Room A Few Noteworthy Bits of BCA Information: A Few Noteworthy Bits of BCA Information The BCA Website Now Has a Classified Adds Section