直线压缩机驱动的超高温双作用行波热声热泵

提出了一种直线压缩机驱动下的高温双作用行波热声热泵流程,并以kW级别的热泵系统进行了设计和优化。在热泵热端温度为150℃,环境温度为40℃时,计算模拟了其在不同回热器结构以及不同换热器结构下的性能。得出当回热器采用板叠式回热器,换热器采用管壳式换热器时能够获得较高的效率和较大的泵热量,获得的热端泵热量可达1 823.9 W,热泵系数COP为3.16,相对卡诺效率为82.3%。在此基础上,进一步计算了热泵在不同环境温度和不同热端温度下的工作性能,以模拟工业上热泵在不同环境下的工作状况。

Double-acting traveling-wave thermoacoustic heat pump for high-temperature range driven by linear compressor

A novel thermoacoustic heat pump driven by linear compressor was proposed,which can be used for high-temperature range above 100 ℃.As a case of study,such a kW-class system was designed and optimized by using the DeltaEc code to simulate the performance of heat pump under different structures of regenerator and heat exchanger.In the simulation,the hot-end and cold-end temperatures were set to be 150 ℃ and 40 ℃ respectively.The study shows that the relative Carnot efficiency of the heat pump can reach its highest level when the regenerator adopts stack-type configuration and heat exchanger uses shell-tube typeconfiguartion.In the simulation,the heat pump can achieve pumping heat of 1 823.9 W,a COP of 3.16 and the relative Carnot efficiency of 82.3%.Furthermore,the performance of designed heat pump operating with different cold-end and hot-end temperatures was analyzed.