【作者】 方筝；

【导师】 杨昭；

【作者基本信息】 天津大学 ， 制冷与低温工程， 2009， 博士

【摘要】 燃气机热泵是一种高效节能、经济环保的新型供热空调装置,国内对该装置的研究正处于起步阶段。本文研究的空气源自备电燃气机热泵系统在国内属于首创,本文对空气源自备电燃气机热泵进行了较为全面的理论分析和实验研究,目的是为空气源自备电燃气机热泵在中国市场的推广应用,在理论和实践上做好技术准备。主要研究内容如下:在本课题组前人研究的基础上,与课题组成员一起设计搭建了空气源自备电燃气机热泵实验台,对其进行了制热性能测试。以实验台为原型,对其进行火用损功率分析和热经济学分析。通过对燃气机热泵系统的火用损功率理论计算分析得出在设计空气源自备电燃气机热泵系统时,从能量品质的角度出发应该尽量减少系统内发电机的发电量,用以减少一次能量的转换带来的有效能的损失;热经济学分析得出了合适的传动比对燃气机热泵的经济性运行有着重要的影响;同时还得出空气源自备电燃气机热泵系统在中国具有广阔的应用空间;对搭建的空气源自备电燃气机热泵进行了制热实验测试,完成了实验台的变转速及末端水变流量实验,通过对实验数据的分析,得出本空气源自备电燃气机热泵在性能上达到当初设计性能要求,具有较高的一次能源利用率PER,最高值能达到1.69;有效回收和利用了发动机产生的废热,通过对制冷实验的数据分析,指出了本实验台还需完善的地方,为实验台的进一步改造和调试提供了经验借鉴;针对空气源自备电燃气机热泵系统的噪声问题,本文采用了隔声罩和双室抗性消声器,以此来达到降低燃气机热泵的中低频噪声的目的,通过模拟分析及实验研究,证明本文设计使用的隔声罩及消声器能很好的降低燃气机热泵的高、中、低频噪声;本文还讨论分析了燃气机热泵的多级传动比的设置问题,得出了在设计燃气机热泵的多级传动比时,应将室外温度延续时间较长、供暖负荷较大供暖区间的传动比设置的较小得结论。本文主要以实验和理论计算为研究方法,两者相辅相成,为空气源自备电燃气机热泵系统在中国的推广应用推波助澜,所采用的方法和得出的结论对以后空气源自备电燃气机热泵的研究和设计具有参考价值。更多还原

【Abstract】 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.更多还原