燃气机热泵变负荷特性的试验研究

Experimental investigation on partial load characteristics of gas engine-driven heat pump

燃气机热泵是一项高效节能技术 ,在试验条件下其一次能源利用率 PER为 1 .1 3～ 1 .79。为了解变负荷时燃气机热泵的性能 ,通过试验得到了燃气机热泵的发动机负荷特性、发动机余热回收和燃气机热泵的总体特性曲线。结果表明 :随着发动机转速的增加 ,燃气机热泵的 COP和 PER是下降的。但下降的幅度较为平缓 ,且保持较高的数值。通过对 IPLVCOP值的分析 ,发现燃气机热泵的 IPLVCOP比热泵系统的大 ,这说明燃气机热泵的部分负荷性能好 。

Gas engine\|driven heat pump is an efficient energy saving technology, which has the primary energy ratio between 1.13 and 1.79 under experimental condition. The performance of load characteristic, heat recovery and the overall characteristic of as engine\|driven heat pump unit were obtained on a test rig to make clear of its partial load characteristics. The results indicate that the COP and PER of the gas engine\|driven heat pump will decline when the speed of gas engine increase. The gradient for the decline is stable with a relatively high value. Comparing gas engine\|driven heat pump system with the valuex of IPLV COP , it can be seen that the value of gas engine\|driven heat pump is larger than that of the heat pump system. This indicates that the gas engine\|driven heat pump has a good partial load performance.