Performance Analysis On Combined Operation Of Solar Air Source Heat Pump

In recent years,with the development of low-carbon and environmentally friendly technologies,air source heat pump systems have received increasing attention.In order to further improve the energy efficiency of air source heat pumps,it is necessary to conduct a comprehensive analysis of the current development status and existing problems of air source heat pumps.This article aims to improve the energy efficiency of air source heat pumps through comparative analysis,directly connecting and coupling solar collectors with air source heat pumps,and conducting simulation and experimental analysis.Obtain the exact relevant parameters of the system.The solar air source heat pump system is composed of an air solar collector,a high-temperature compressor,a low-temperature compressor,an evaporator,a condenser,an intermediate condenser,a circulating fan,and a throttling device.R22/R22 is used as the refrigerant for the solar air source heat pump system.Firstly,simulate and analyze the solar air source heat pump system,establish mathematical models of evaporator,condenser,compressor,intermediate condenser,and throttling device,and then use MATLAB software for mathematical simulation.By changing the evaporation temperature,study the changes in system COP,power consumption,and pressure ratio.In the simulation,simulate the changes in system performance without solar collectors and with solar energy,and finally compare the two simulation scenarios.The simulated power without a solar collector at an evaporation temperature of-25 ℃ is 13618 W,and the simulated COP at this temperature is 2.6865.Under the same environmental conditions,the simulated power with a solar collector is 11405 W,and the COP is 3.2078.Based on actual engineering measurement results,data analysis was conducted on three petrol stations using solar air source heat pump systems,including data on power consumption,heating capacity,and power at different environmental temperatures.According to the actual measurement results,it can be seen that when the ambient temperature is low,the system consumes a large amount of electricity and requires a higher amount of heating.Analyzing the data from October 2021 to March 2022,it can be concluded that the power consumption of three different testing locations depends on the specific local conditions.Comparing the actual test data with theoretical data,it was found that the maximum theoretical and actual error in power was 14.50%,and the maximum theoretical and actual COP error was 11.25%.An economic evaluation analysis was conducted on the solar air source heat pump system.Taking the "Wu’er" petrol station as an example,the same heat was provided.The solar heat pump system was compared and analyzed with conventional heat pump systems,coal-fired systems,and natural petrol systems.Based on the initial investment and operating costs,it was found that the initial investment of the solar heat pump system was the highest at 53000 yuan,and the operating cost of the solar heat pump system was the lowest at 9570 yuan.The economic efficiency of solar air source heat pump systems is the highest when evaluated based on the investment return cycle.We have analyzed the solar air source heat pump system from theoretical,practical,and economic perspectives,providing certain theoretical support for future related research.