The Study On Thermal Performance Of New Type Of Cooling And Heating System

This paper is based on the theoretical research of air-conditioning system and heat pump system, discusses the system forms and characteristics of condensing heat recovery combined heating and cooling system.the paper put forward the mode of new kind of combined heating and cooling integrated unit.This new kind of combined heating and cooling integrated unit including casing tube type evaporator,casing tube type condenser,expansion valve,compressor,one circulating cool-water tank and one circulating heat-water tank.Experimental and simulation method was used to study the thermal performance of this new kind of integrated unit.Establish this new kind of combined heating and cooling system,the main components of mathematical model with MATLAB software.Simulating heating condition and combined heating and cooling condition.Heat capacity,refrigerating capacity, export and import enthalpy of condenser and evaporator,these data obtained in the process of simulation.On the basis of simulation,analysed the thermal performance of this system.The new kind of combined heating and cooling integrated unit was studied experimentally under heating condition and combined heating and cooling condition.Analysed thermal performance under these two different conditions.In the end of experimental research,put forward the joint coefficient of performance.on the basis of data analysis.getting a consistent conclusion with simulation.under heating condition,trying to reduce the initial temperature of water and determine a reasonable temperature is good for the improvement of the Coefficient Of Performance.under combined heating and cooling condition,cool and heat load matching problem was discovered.