Preliminary study on water circulation system of underground hot springs in residential areas.

Very recycled. Instead of considering recycling, it is better to add insulation to the main pipeline and the branch pipes of each household first, and then use a pump to form a circulation between the main pipeline and the hot springs (to ensure an endless supply of hot water, which is the same as heating in winter), so that even if residents put out some cold water, there will not be much.