| 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℃的时间很少时，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。 |
| 关键词: 吸收式热泵 对比 空气源 寒冷地区 |
| DOI： |
| 投稿时间：2012-09-27
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| 基金项目:国家杰出青年科学基金（51125030)和国家重点基础研究发展计划（2010CB338305）资助项目 |
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| Approaches and Comparative Analysis for Performance Improvement of Air Source Absorption Heat Pump in Cold Regions |
| Wu Wei,Shi Wenxing,Wang Baolong,Li Xianting |
| (Department of Building Science, School of Architecture, Tsinghua University) |
| Abstract: |
| 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 performance of ASAHP will be better when the air temperature is higher, the energy saving potential over the whole heating season will be much optimistic. |
| Key words: absorption heat pump comparison air source cold regions |
