Water bill saving of AIT through rain water harvesting | |
| Author | Pathirana, Pasindu Madara |
| Call Number | AIT Caps. Proj. no.CIE-14-16 |
| Subject(s) | Water-supply--Costs--Thailand--Pathum Thani Rain-water (Water-supply)--Thailand--Pathum Thani |
| Note | A capstone project report submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Engineering in Civil and Infrastructure Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. CIE-14-16 |
| Abstract | Rain water harvesting is rarely practiced in Bangkok area even though Bangkok receives an average annual rainfall .However rain water harvesting has been practiced in many rural areas in the country and many rainwater harvesting projects have been implemented during the recent past. Therefore the emphasis of this research has been to identify key factors which will help the use of rainwater for domestic consumption in AIT premises. The key factors studied are expected water saving as a percentage of total monthly consumption, savings from water bill and optimum tank size for rain water harvesting. Daily rain fall data of Pathumthani area for a minimum period of 38 years has been evaluated in this study. Rain fall data’s for past minimum 38 years was collected from AIT metrological station. The roof areas of SET and SERD academic buildings were collected from the Construction Management Office (CMO) in AIT. A Microsoft Excel model will be developed to calculate the volume of water that can be collected per day for a given roof area along with the security of supply for each tank size used for rainwater collection. Water bills of SET and SERD were taken for past two years to calculate the actual average water demand for each month. Obtained the security of supply for given demand by varying different tank sizes and calculated water bill savings for each month. Using water bill savings from each month, obtain the annual average water bill savings for different tank sizes. Markets size tank prices for recommended tanks were obtained. Total cost of the construction would be the addition of the cost of optimum tank price, the cost of proposed piping system, cost of the proposed steel structure, cost of the addition proposed 5000L water tank and the cost of the pumps of the system. The optimum tank size would be taken using the minimum payback period of the total system. The minimum payback period would be nearly 10 years and nine months and 30 000L water tank would be the optimum tank size. And monthly water bill savings are approximately 50 000 THB per annum. The calculations for the lowest and the highest flow rates for the piping system is attach to the appendix. The summery of the highest and lowest flow rates were calculated for the first floor and for the ground floor as follows. Water flow rates of the pipe system will be varies from 18 L per minute to 34 L per minute. Proposed pipe system for the ground floor and for the first floor of the SET and SERD building were attach to appendix at the end .the arrangement of the tank system drawing also attach to the appendix. |
| Year | 2014 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-14-16 |
| Type | Capstone Project |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Civil and Infrastructure Engineering (CIE) |
| Chairperson(s) | Bohez, Erik L.J.; |
| Examination Committee(s) | Mongkol Ekpanyapong;Jayaranjan, M.L.D.; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2014 |