logging in or signing up Team 9 TimFord Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite 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: 191 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: October 13, 2009 This Presentation is Public Favorites: 0 Presentation Description How much rain typically falls on the school roof each day, how can it be collected and how can it be used? Michael Lau 13G (Standard Physics) Charles Cheng 13F (Higher Chemistry) Jack Lee 13A (Higher Chemistry, Standard Physics) Henry Kwok 13E (Standard Chemistry, Higher Physics) Tim Law 13G (Higher Biology) Lester Chan 13C (Standard Physics, Higher Design and Tech) Comments Posting comment... Premium member Presentation Transcript Rainfall Collection : Rainfall Collection Team 9 Michael Lau Jack Lee Charles Cheng Lester Chan Henry Kwok Tim Law Water Crisis. : Water Crisis. Growing population / water scarcity. The Core problem – Unfavorable management to water; 1/6 of global population is lacking access to safe drinking water Annual Rainfall (recorded by HK Observatory HQ) : Annual Rainfall (recorded by HK Observatory HQ) between 901 mm and 3343 mm Projected Annual Rainfall (Recorded by Hk Obersvatory Hq) How much rain typically falls on the school roof each day how can it be collected and how can it be used? : How much rain typically falls on the school roof each day how can it be collected and how can it be used? Why? : Why? Reducing Utility Fees – In the past nine months, the school has used a total of ‘$136,641.10’ on water We believe that by developing a method of conserving rain water, it would help the school to reduce cost in long term Most importantly; Increase the awareness of students for environmental issues. Caring for the environment we live in. Slide 6: Methods of Conservation Rainfall pattern : Rainfall pattern The wettest month is August - rain occurs about four days out of seven; average rainfall is 391.4 mm The driest month is January – rain falls about six days in a month; average rainfall is 23.4 mm Source: Hong Kong Observatory Project BIG Buckets : Project BIG Buckets Slide 9: Buckets placed around the turf Placed on rainy days HKD $500 : HKD $500 Project Astro Canopy : Project Astro Canopy Slide 12: Average Rainfall per month 319.4 mm (Highest) ? 0.3194 m 23.4 mm (Lowest) ? 0.0234 m Area of shelter: 660 m² approx. Max. volume of water: 0.3914 x 660 = 210.804 m³ (Highest) 0.0234 x 660 = 15.444 m³ (Lowest) Assuming that the water would be used up in 10 days 210.804/3 = 70.268 m³ (Highest) 15.444/3 = 5.148 m³ (Lowest) Space used for water tank : Space used for water tank The water tank would be placed behind the hall block. Slide 14: r = 1.881 pr² = 11.115 m² Slide 15: 6.5 m Height of Water Tank required 70.268 / 11.115 = 6.322 Therefore ? 6.5 M (since we want it bigger) HKD $100000 : HKD $100000 Slide 17: Which project should we use? Project bIG buckets : Project bIG buckets Advantages Disadvantages Low construction cost Allows immediate implementation Low maintenance cost Allows students to be involved (collect water) Increase student awareness of environmental issues Mosquitoes Low Sustainability No Storage System (In dry seasons, there are less water that could be used) Inconvenient; requires a lot of human effort Project ‘Astro Canopy’ : Project ‘Astro Canopy’ Advantages Disadvantages High Sustainability Storage System (water tank) Multifunctional (Prevents the turf from getting wet) Convenient; requires less human interventions High construction cost Needs technicians to set up Maintenance cost Longer set up time Our suggestion: : Our suggestion: Project Astro Canopy High Sustainability (Focus of group 4 project) Possible Lead-up Question…. : Possible Lead-up Question…. How can rain water be collected in places other than the roof, in a cost effective manner? You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Team 9 TimFord Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite 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: 191 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: October 13, 2009 This Presentation is Public Favorites: 0 Presentation Description How much rain typically falls on the school roof each day, how can it be collected and how can it be used? Michael Lau 13G (Standard Physics) Charles Cheng 13F (Higher Chemistry) Jack Lee 13A (Higher Chemistry, Standard Physics) Henry Kwok 13E (Standard Chemistry, Higher Physics) Tim Law 13G (Higher Biology) Lester Chan 13C (Standard Physics, Higher Design and Tech) Comments Posting comment... Premium member Presentation Transcript Rainfall Collection : Rainfall Collection Team 9 Michael Lau Jack Lee Charles Cheng Lester Chan Henry Kwok Tim Law Water Crisis. : Water Crisis. Growing population / water scarcity. The Core problem – Unfavorable management to water; 1/6 of global population is lacking access to safe drinking water Annual Rainfall (recorded by HK Observatory HQ) : Annual Rainfall (recorded by HK Observatory HQ) between 901 mm and 3343 mm Projected Annual Rainfall (Recorded by Hk Obersvatory Hq) How much rain typically falls on the school roof each day how can it be collected and how can it be used? : How much rain typically falls on the school roof each day how can it be collected and how can it be used? Why? : Why? Reducing Utility Fees – In the past nine months, the school has used a total of ‘$136,641.10’ on water We believe that by developing a method of conserving rain water, it would help the school to reduce cost in long term Most importantly; Increase the awareness of students for environmental issues. Caring for the environment we live in. Slide 6: Methods of Conservation Rainfall pattern : Rainfall pattern The wettest month is August - rain occurs about four days out of seven; average rainfall is 391.4 mm The driest month is January – rain falls about six days in a month; average rainfall is 23.4 mm Source: Hong Kong Observatory Project BIG Buckets : Project BIG Buckets Slide 9: Buckets placed around the turf Placed on rainy days HKD $500 : HKD $500 Project Astro Canopy : Project Astro Canopy Slide 12: Average Rainfall per month 319.4 mm (Highest) ? 0.3194 m 23.4 mm (Lowest) ? 0.0234 m Area of shelter: 660 m² approx. Max. volume of water: 0.3914 x 660 = 210.804 m³ (Highest) 0.0234 x 660 = 15.444 m³ (Lowest) Assuming that the water would be used up in 10 days 210.804/3 = 70.268 m³ (Highest) 15.444/3 = 5.148 m³ (Lowest) Space used for water tank : Space used for water tank The water tank would be placed behind the hall block. Slide 14: r = 1.881 pr² = 11.115 m² Slide 15: 6.5 m Height of Water Tank required 70.268 / 11.115 = 6.322 Therefore ? 6.5 M (since we want it bigger) HKD $100000 : HKD $100000 Slide 17: Which project should we use? Project bIG buckets : Project bIG buckets Advantages Disadvantages Low construction cost Allows immediate implementation Low maintenance cost Allows students to be involved (collect water) Increase student awareness of environmental issues Mosquitoes Low Sustainability No Storage System (In dry seasons, there are less water that could be used) Inconvenient; requires a lot of human effort Project ‘Astro Canopy’ : Project ‘Astro Canopy’ Advantages Disadvantages High Sustainability Storage System (water tank) Multifunctional (Prevents the turf from getting wet) Convenient; requires less human interventions High construction cost Needs technicians to set up Maintenance cost Longer set up time Our suggestion: : Our suggestion: Project Astro Canopy High Sustainability (Focus of group 4 project) Possible Lead-up Question…. : Possible Lead-up Question…. How can rain water be collected in places other than the roof, in a cost effective manner?