Simulation and analysis of application of double coupling heat pump to high rise buildings in cold areas

Analyses the particularity of heating and air conditioning systems of high rise buildings in cold areas and puts forward four kinds of double coupling heat pump systems with the air as low-level heat source to be used. Simulates and analyses the operation performance of the double coupling system with air-source heat pump and VRF water-source heat pump in an office building by establishing its mathematic model. Compares the economic efficiency between the system and the conventional low temperature air-source heat pump system.