Performance Investigation Of Aggregated Thermal Dissipation Gas Wave Refrigerator

Aggregated Thermal Dissipation Gas Wave Refrigerator (AWR) is a new innovational Gas Wave Refrigerator (GWR). It has the advantage of simple and compact structure, low manufacturing cost, high isentropic refrigeration efficiency and high ability of operation with liquid. It can be used for removal water from natural gas which contains a small amount of water in the natural gas mining process. It also can be used for recovering the lighter hydrocarbon in natural gas. So the AWR has a broad prospect of application.AWR has lots of parameters which can be adjusted, and effects of each parameter on device performance are relatively complex, and the effects have coupling relationship. In order to study the effects of various parameters on device performance of the equipment, one dimensional isentropic flow theory, two dimension numerical simulation and Physics experiment are used conjunctively. A deep study of AWR is made, and the main research work and the conclusions are as follow:(1) Lots of numerical simulation is made in allusion to the structure of AWR. Matching problems of the equipment parameters are researched systematically, which combine one dimensional isentropic flow theory. The research contains the matching of high temperature export nozzle width and drift angle in fixed rotate speed and the matching of rotate speed in fixed drift angle. The systematic matching method is summarized which provide theoretical foundation to the experimental work.(2) The effects of the pressure of HT port on moving distance of contact surface are analyzed. The maximum distance of contact surface is equal to the length of the passage when the HT pressure is optimum, and the gas temperature behind the contact surface is lowest. Therefore the optimum HT pressure is put forward. And the generation and effects of exhaust reflux and reverse compression wave on exhaust temperature are researched particularly. A scheme is put forward for decreasing low temperature gas reflux and weakening reverse compression wave. These results provide theoretical basis of increasing isentropic expansion efficiency.(3) The experiment process of AWR is built to research the effects of various structural parameters and operating parameters on performance systematically. Effects of various parameters such as rotate speed, expansion ratio, HT pressure, drift angle, width of nozzle, backflow temperature and length of solid wall on isentropic expansion efficiency and effect of rotate speed on isentropic compression efficiency are in-depth researched. And the experimental results are analyzed on the basis of numerical simulation results.The study demonstrates that increasing rotate speed and drift angle, selecting appropriate nozzle on the basis of rotate speed, and increasing HT pressure and the length of solid wall properly will improve performance of AWR markedly. The experimental results are very important to perfect the structural parameters and operating parameters of AWR.