Research on testing of solar energy and deep unperturbed geothermal energy coupling heating system
To fully leverage the advantages of solar energy and deep unperturbed geothermal technology,a testing platform for the coupling heating of solar and geothermal energy has been established.This testing platform is composed of a deep unperturbed geothermal system,flat plate collector system,trough collector system,and evacuated tube collector system.The platform was used to test the application cases of solar and deep unperturbed geothermal energy coupling heating.The results show that using solar and deep unperturbed geothermal energy coupling heating can reduce the operating time of the geothermal host.The average heat supply proportion of the solar system is about 29.2%,the average heat collection efficiency of the solar system reaches 48%,and the comprehensive energy efficiency ratio of the coupling heating system is 5.4.Compared with the deep unperturbed geothermal system,the comprehensive energy efficiency of the coupling system is increased by 17.4%,and the operating cost can be reduced by about 10.8%.
solar heatinggeothermal heatingdeep unperturbed geothermal energycoupling heating system