Recent years, the seasonal energy efficiency(SEER)and integrated part-load value(IPLV)are the evaluating methods for refrigeration and heat pump equipment.
季节能效比（SEER）和综合部分负荷值（IPLV）是近年来出现的制冷和热泵装置能源效率评价指标。
With the compressor in part, motor load can change speed, with gas and still maintain a high efficiency;
当空压机处于部分负载时，电机能随气量改变转速，并仍保持高的效率；
Therefore, in the lower part load, the gas engine heat pump at a lower energy efficiency.
因此在部分负荷较低的情况下，燃气机单级离心泵的一次能源利用率较低。
Therefore, in the lower part load, the gas engine heat pump at a lower energy efficiency.
因此在部分负荷较低的情况下，燃气机单级离心泵的一次能源利用率较低。
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