Theoretical And Experimental Research On System Of Air Source Autonomous Power Supply Gas Engine-Driven Heat Pump

The gas engine-driven heat pump (GEHP) is a high performance and environment-friendly equipment that can provide heating and cooling, but at present the study on the GEHP is insufficient in China. The air source autonomous power supply gas engine-driven heat pump, researched in this paper, is firstly studied in China. In order to spread the GEHP's application in China, the paper conducted a theoretical and experimental investigation on the GEHP. The main contents of this paper are as follows:The air source autonomous power supply gas engine-driven heat pump test-bed was constructed, and its detailed performances were tested in heating season. And according to model of the test-bed, the system of exergy loss power and thermo-economic analysis were researched. Based on the results of the analysis, some conclusions, useful for GEHP's design, were put forward. And on the basis of thermo-economic analysis, it is believed that air source autonomous power supply gas engine-driven heat pump system in China has a broad application space. The gas engine heat pump heating tests were carried out after the construction, moreover, the experiments of variable speed and water flow of the end of the equipment were completed. Through the analysis of experimental data obtained from the test-bed, it is concluded that the air source autonomous power supply gas engine-driven heat pump was designed to meet the performance requirements of high primary energy efficiency (PER), and according to the experimental data , the maximum PER is 1.69. Due to new process design, the engine waste heat was greatly recovered and utilized, which has successful resolution of the air source heat pump running in the winter without frost, when no usage of outside energy, without reversing valve switch and without interruption under the conditions of heating operation. In order to against noise of GEHP, the acoustic enclosure and double chamber fastness muffler were introduced into the test-bed. And it is proved by RAYNOISE's simulation and experimental research that the method is practicable. And how to set the drive ratio of air source autonomous power supply gas engine-driven heat pump system with multi-drive ratio, is firstly put forward, which has significance for GEHP's design.The experiment and theoretical calculation are main research methods, which complement each other. The conclusion may be helpful for the investigation and design of the GEHP, and it is the theoretical basis of GEHP's wild application.