Pan Boyi, Tan Shuyao, Ye Chenchen, Zhang Xinran, Zhao Yiming
Academic Advisor: Mr. Lim Cheng Puay
The importance for Singapore to address the problem of water scarcity is hard to be overstated with Singapore’s restricted natural water sources and high-level water consumption, especially domestic water consumption during showering. An awareness survey within RVRC residents and experiments on water heaters in RVRC show that 722 liters of water were estimated to go down the drain without being used in RVRC every day. Our project aims to eliminate cold water waste while waiting for the water to get warm before showering. Our solution is to design an affordable and user-friendly water recirculation structure for the instant water heaters. Due to the lack of necessary certifications from PUB, only a prototype is built to test the theory. The result turns out that when the showering water is under 25℃, the water will be pumped back to the water heater to be reheated. When the water is above 45℃, the user can turn on the showering water-tap and hot water will flow out. Users can control the process with two switches. The whole cost for the system is 60 SGD. A post-survey investigating the public attitude towards the design shows that over 78.5% of respondents are willing to adopt this system. Overall, the system can eliminate cold water waiting time, and it is easy to use and affordable compared to existing households water circulating system.
Keywords: Water saving; water; showers