Thermal system for preheating clean water for sanitary uses or industrial processes, has heat exchanger receiving dirty water supplied from waste water pipe and warming clean water using heat rejected from dirty water

摘要

A heat exchanger receives dirty water supplied from a waste water pipe via connection valve, and uses the heat ejected from the dirty water to warm the clean water. A controller operates a distribution valve, which in turn regulates the flow of dirty water from the pipe to the heat exchanger.