Team 16

Slide 1: 

Team members:  Minos Lau, Jia Wei Liew, Jia Xiang Liew, Ian Lai, Jonathan Khong, Howard Kwok, Team name: Rain Water Collectors  Investigation Question: How can we reuse rainwater in a sustainable way?

Waste water : : 

Waste water : Water wastage poses as one of the most important environmental issues today. The amount that is useful and clean is diminishing. In 60% of all European nations, water is being used at a faster rate than it can be replenished. We chose this topic because water is such a vital resource; and was the highest priority for both Earth Summit 2004 and Earth Summit 2010. The Global Water Supply and Sanitation Assessment 2000 Report (GWSSAR) states that by 2015, ‘Most of South America, Sub-Saharan Africa, Southern China and India will face water supply shortages;’ Recycling water costs nothing while it wastes so many resources to re-process water from our drainage back to our taps.

Environmental Problem: : 

Environmental Problem: This is the point where the water runs off during rain. There is a pipe leading it towards the drain, a waste of rain water. We are trying to collect rain water for the gardeners’ usage so that we can reduce the amount of water wasted help the school cut costs for water fees. We’ve decided to design containers and pipe routes to lead rain water from both canopies in the café area so that it can be used for EAG gardening.

Planning : 

Planning To collect the rain water from the canopy pipes, we need some kind of container for the water, and also pipes leading the water into the container. Specifications for the Container: -A container which allows for easy access for gardeners to the rain water. -A container that can contain over … of water. -An efficient pipeline system for the transport of rain water. Canopy 2 Canopy 1 (On top of Café)

Design- Connection Route 1 : 

Design- Connection Route 1 the water leads from the canopy to the vertical pipe at its corner, where rain water just drains into the sewage. The quickest way would be to build a container right below the pipe after cutting a length of it off. PROBLEM: After planning and designing this with 3D design, we again verified the prices of cutting the pipe and discovered that it was even more technically difficult (cost and equipment) to cut it.

Design -Connection Route 2 : 

Design -Connection Route 2 To solve this problem we thought of route 2. This is to link the water containers to PVC plastic piping (flexible) from over the white house to a drilled hole at the gutter of the canopy. To drill a hole (power drill) is free, and we can guide the water from the hole to the containers with the piping.

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Where are the MINOS slides : 

Where are the MINOS slides 1st 2nd tech's white house STC first block

Slide 10: 

Canopy       designs 1st 2nd

Design – Water container : 

Design – Water container Air pressure equalizer vault Tap

Material Research: Pipes : 

Material Research: Pipes Step 1: Pipe Drilling: -Operation Cost: Free, using the school’s power drill. Step 2: Silicon-water proof adhesive -Operation Cost: around $7 per silicon tubing -$ 20 for the glue dispenser. Where to find: Hong Lung re-furbished Shop, Sham Shui Po, Step 3: Pipes -Cost: PVC pipes; $183 per 13 feet. -Where to find: Hong Lung re-furbished Shop, Sham Shui Po,  Step 4: Labour Zero. WE WILL VOLUNTEER!

Slide 13: 

WATER SAVING CALCULATIONS include the design and costs that would be reduced in school with the area of the canopies.  Concept: (Money used for total annual water consumption by shatin college) - (the money worth the annual rainfall collected by the canopies).  Details and facts:  1.) The amount of water used per year in cubic meters. (183,000/4.58) = approx 40,000 meters cubed ( used by the school annually ) 2.) Annual rainfall m3 (collected by the standard HKO gauge): 67760978.47 (millimeters cubed) = 0.0677609785 meters cubed 3.) Cost for water is 4.58 per meter cube  4.) Dimensions of the canopy 1: Length: 7.4m Width: 6m Surface area 44.4m2

Slide 14: 

5.) Dimensions of the canopy 2: Length: 5.49 meters width: 2.5 meters Surface area: 14.11m2 Total area of two canopies: 58.84 m3 (Case of investigation: annual rainfall         measured by a standard rain gauge,     measures in mm in height.) Surface area of gauge:   --> 0.03243 m2 The number of gauges that fit both canopies =  Total area of both canopies / surface area of gauge = 1804.19 Rounding up, 1804 gauges can rest on both canopies all at once. each month is measured by one gauge. Total annual rainfall m3 multiplied by 1804 = 121.95 (122) m3 you guys sleep ill have two pie charts by tonight

JUDGEMENT (short term benefit) : 

JUDGEMENT (short term benefit) Case one: No implementation: Cost of production: 0                     + Cost of Shatin college annual water supply 4 dollars and 58 cents x 40,000m3 = HKD $ 183200 (every year)  Total cost =  HKD $ 183200 Case two: full implimentation:  Cost of production:  Considering slide 11, total cost of all three steps =  FYI: ( $7 per silicon tubing x 7 (assume about one tube for two joints of pipe) + $ 20 for the glue dispenser. PVC pipes; $183 / 13 = 14.08 (x 25 feet of tube) production cost: 69 + 421 dollars = 490 Total cost =  HKD $ 183690

FINAL JUDGEMENT (long term benefit) : 

FINAL JUDGEMENT (long term benefit) Case one: no action taken .... ...... .......... ................. ........................ Not much saved. Case two: Total annual rainfall m3 collected by both canopies =  121.95 (122) m3  multiplied by cost of one cubic meters of water = 558.53 MONEY SAVED PER YEAR: HKD $ 558.53

Calculations : 

Calculations

Prototype : 

Prototype

Strengths: The prototypeWe modeling the prototype we were able to use sustainable recyclable materials such as recycled cardboard and scrap paper which were collected from Room 201.Our prototype also included the green wall which allows water to flow through.Weakness used un-sustainable pvc glue while designing the prototype.  plastic duct tape, straws was   prototype's inability to replicate the real system with a degree of success. due to it: : 

Strengths: The prototypeWe modeling the prototype we were able to use sustainable recyclable materials such as recycled cardboard and scrap paper which were collected from Room 201.Our prototype also included the green wall which allows water to flow through.Weakness used un-sustainable pvc glue while designing the prototype.  plastic duct tape, straws was   prototype's inability to replicate the real system with a degree of success. due to it:

Analyzing the Plan : 

Analyzing the Plan While designing our project by using computer simulation programs and by modeling a small prototype. We were able to estimate the total amount of rainwater collected per annual year.  For canopy 1, the total amount of water collected was... For canopy 2, the total amount of water collected was...     Total water collected annually -- 121.95 (122) m3

Evaluating the Plan : 

Evaluating the Plan Amount of water we would save: 122m3 Overall costs and overall profits:  Sustainable materials bought from Hing lung re-furbished shop, Sham Shui Po. pipes? Rubbish bins found in          Fo Tan    Rainwater Quality?

Conclusion : 

Conclusion Successful attempt in creating a sustainable water source Problems being dealt in a logical way and manner Considered economical factors and limitation Considered environmental factors in order to approach a sustainable solution  Considered the feasibility, the cost, the probability of success rate

Areas for further research and development : 

Areas for further research and development More sustainable materials used e.g. refurbrished materials recycled materials pre-available in school the structure of the water pipes