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中文摘要：
空气源吸收式热泵对于北方供暖的意义重大。为了提高空气源吸收式热泵在低温环境下的可靠性和能效，提出了双级吸收式热泵、双级耦合吸收式热泵和增压吸收式热泵。通过建模和模拟分析，对这三种途径在不同环境温度下的性能进行了对比分析。若采用风机盘管末端，当采暖期内气温低于-25℃的时问很少时，双级耦合热泵的性能最好；否则可以考虑采用双级空气源吸收式热泵。室外设计温度为-15℃和-30℃时，空气源吸收式热泵的一次能源效率分别比燃煤锅炉高28％和19％。若采用地板辐射末端，则增压吸收式热泵的能效最高，室外设计温度为-15℃和-30℃时，一次能源效率可达0．953和0．874，分别比燃煤锅炉高36％和25％。考虑整个采暖期内气温较高时热泵的性能较好，则增压空气源吸收式热泵用于地板辐射采暖的节能潜力更为可观。
英文摘要：
Air source absorption heat pump （ASAHP） is of great significance for heating in North China. To improve the reliability and efficiency of ASAHP in cold climates, double-stage, double-stage coupling and booster-assisted ASAHP are put forward. Performances of the three proposed systems under different air temperatures are comparatively simulated. For fan coil heating, the double-stage coupling ASAHP performs the best when air temperature below -25℃ is not dominant, otherwise double-stage ASASHP should be considered. Primary energy efficiency （PEE） of ASAHP can be 28% and 19% higher than that of coal boiler when the outdoor air temperature is - 15 and - 30℃ , respectively. As for floor radiant heating, booster-assisted ASAHP performs the best, with a PEE as high as 0. 953 and 0. 874 when the outdoor air temperature is - 15 and -30℃, which is 36% and 25% higher than that of coal boiler. Considering that per- formance of ASAHP will be better when the air temperature is higher, the energy saving potential over the whole heating season will be much optimistic.
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