The technology of combined cold, heat and power (CCHP) could improve primary energy utilization efficiency, and reduce environmental pollution.
冷热电联产(CCHP)技术可提高一次能源的利用率，降低环境污染。
The results also make it clear that heating coefficient and primary energy efficiency of whole heating system should be adopted to evaluate the energy utilization of each heat pump system.
还表明应以整个供热系统的供热系数和一次能源利用系数来衡量各热泵系统的能量利用性。
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