ABSTRACT

In flats where there are gas water heaters, there is waste of water at the beginning of a shower due to the large lengths of pipes between the showerheads and heater. This paper analyses the financial feasibility of implementing an automated system that saves such water. This paper also shows how the system prevents such waste. In six flats, by collecting cold water at the beginning of a hot shower, it was observed that 9.28 litres of water are wasted until the water temperature reaches 30°C. A financial analysis was performed based on costs and the amount of water that would be saved. It was considered the installation of the system in one or two showerheads per flat for multi-family buildings of different heights. The installation of one or two systems per flat would lead to savings of, respectively, at least 2.13 litres and 4.14 litres of water per shower.

摘要

在有燃气热水器的公寓里，由于淋浴喷头和加热器之间的管道很长，所以在淋浴开始时会浪费水。本文分析了实施节约此类水的自动化系统的财务可行性。本文还展示了该系统如何防止此类浪费。在六个单位中，通过在开始洗热水澡时收集冷水，观察到在水温达到 30°C 之前浪费了 9.28 升水。根据成本和可节约的水量进行财务分析。对于不同高度的多户型建筑，曾考虑将系统安装在每间公寓一个或两个淋浴喷头中。每间公寓安装一个或两个系统将分别节省至少 2.13 升和 4 升。