Abstract
This report describes the development of a hybrid heat pump in order to utilize low temperature unused energy. This hybrid heat pump consists of topping part and bottoming part in order to realize heat cascading of natural gas, which is expected to play major role in future energy sources in Japan. A gas engine driven heat pump plays the topping part and adopts non-azeotropic refrigerant in order to realize Lorenz cycle. An adsorption chiller plays the bottoming part energized by the waste heat of gas engine heat pump and the sensible heat of heat pump refrigerant. A new device measuring the amount of water absorbed was developed and theoretical COP was calculated on the basis of these experimental data.
