CLRV03/04 new volumetric heat exchanger is a new type of patented heat exchanger introduced from the General Institute of Architectural Design of the Ministry of Construction of the People's Republic of China. It is a new generation of volumetric heat exchanger introduced by the Ministry of Electrical and Mechanical Services of the People's Republic of China, which is a new generation of heat exchanger with thermal performance exceeding that of other similar products, and is a more ideal and sensible heat exchanger for hot water units at present. Launched a new generation of volumetric heat exchanger, through the Ministry of Electrical and Mechanical Services, North China Test Center station of the thermal performance measurement, its thermal performance exceeds other similar products, hot water water unit is currently the more ideal and sensible heat transfer equipment.