Recovery system of waste heat for bathroom

摘要

A waste heat recovery system of a bathroom of the present invention comprises: a mixing part for mixing cold water and hot water supplied to the bathroom; a cold water supply pipe for supplying the cold water to the mixing part; a hot water supply pipe for supplying the hot water to the mixing part; a first heat exchanging part including a first circulation pipe which is branched from a first spot of the cold water supply pipe and is returned to a second spot located down the first spot, and a first heat exchanger which exchanges heat of water exhausted through a bathroom bottom drainage hole with the cold water flowing in the first circulation pipe by being installed on the bathroom bottom drainage hole; and a second heat exchanging part including a second circulation pipe which is branched from the first circulation pipe between the first spot and an entrance of the first heat exchanger and is recovered to the first circulation pipe between the second spot and an exit of the first heat exchanger and a second heat exchanger for exchanging heat of the water stored in a bathtub with the cold water flowing in the second circulation pipe by being installed in an inner wall of the bathtub.