共查询到19条相似文献,搜索用时 406 毫秒
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《建筑热能通风空调》2018,(10)
针对内蒙古阿尔山一座超低能耗被动房建筑展览馆,利用TRNSYS软件分别建立传统地源热泵系统仿真模型和太阳能—地源热泵耦合系统仿真模型,对比分析两种系统运行10年间的地埋管周围土壤温度、地埋管吸热量、热泵机组COP。结果表明:太阳能—地源热泵耦合系统比传统地源热泵系统热泵机组COP提高了0.22,地埋管周围土壤温度提高了19.31℃,验证了该系统的可行性与节能性。 相似文献
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分析了夏热冬冷地区居住建筑中应用地源热泵系统的全年热不平衡情况及应用太阳能热水系统的局限性,认为夏季地埋管系统多余的释热量可以利用冷却塔等设备辅助散热,与太阳能热水系统联合运行,可为居住建筑提供生活热水.结合实际工程,介绍了联合系统的负荷模拟计算. 相似文献
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太阳能热泵低温地板辐射采暖系统是以太阳能热泵为热源,以地板辐射采暖系统为末端装置的新型供暖系统。本文综述了太阳能热泵在国内外的研究与应用,并阐述了太阳能热泵低温地板辐射供暖系统的工作原理及在国内的研究现状。分析了该系统的特点,结果表明该系统是一种舒适、经济和节能的理想供热系统。本文还探讨了该系统在当前的应用中尚待解决的问题。 相似文献
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土壤源热泵具有节能与环保的特点.近年来发展迅速,但在应用中存在冷热负荷不平衡的不利因素。这种不平衡会导致热堆积。引起整个系统性能的降低。本文介绍了针对不同情况的解决方法,如冷却塔辅助散热装置,太阳能-土壤源热泵混合系统等。并提出了亟待解决的新问题。 相似文献
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太阳能热泵组合系统中的设备能量平衡 总被引:6,自引:0,他引:6
针对我国太阳能的利用情况,指出利用太阳能热泵的背景与可能性,并针对典型太阳能热泵系统,给出此系统各设备(包括集热器、蒸发器、冷凝器和蓄热器)的能量平衡方程,分析了太阳能热泵系统的供热性能系数。文中给出的能量平衡实用例可用于太阳能热泵系统的校核与设计。 相似文献
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介绍了太阳能热水系统和空气源热泵各自的性能和特征,以及太阳能热水系统的几种辅助热源,比较了常见太阳能辅助热源优缺点及适用性,以三一上海产业中心为例,重点论述了太阳能与空气源热泵相结合的热水系统的原理和控制方式,分析了此系统的特点及在设计中应注意的事项. 相似文献
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太阳能耦合地源热泵系统的设计以太阳能为辅助、地源热泵为主,最大化地利用太阳能资源,在满足地板采暖制备的情况下,富裕的热量可以补充到生活用水当中。通过实验验证了太阳能耦合地源热泵供暖系统可以有效恢复土壤温度,提高机组性能系数,实现热泵长期稳定的运行。 相似文献
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建立了太阳能热泵供暖实验系统,探讨了在不同太阳辐射情况下系统的运行方式,对太阳能热泵供暖系统进行了供暖实验研究。太阳能热泵供暖系统充分利用了太阳能,基本能够满足供暖要求。 相似文献
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This paper proposed a new solar assisted air source heat pump system with flexible operational modes to improve the performance of the heating system. A mathematical model was established on the solar assisted air source heat pump system for building heating with a heating capacity of 10 kW, and an air source heat pump unit was developed to validate the model. The effect of the solar collector area on the performance of the system running in Nanjing was studied. The results showed that the COP of the heat pump unit was enhanced with the increase of the solar radiation density during the typical sunny day in the heating season. In addition, the COP also increased in proportion to the solar collector area. Compared with the case when the solar collector area was 0 m2, the COP increase of the heat pump and the energy-saving rate were 11.22% and 24% respectively when the solar collector area was 40 m2. Meanwhile, the solar equivalent generation power efficiency could reach 11.8%. 相似文献
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Experimental study of a solar-assisted ground-coupled heat pump system with solar seasonal thermal storage in severe cold areas 总被引:3,自引:0,他引:3
This paper presents the experimental study of a solar-assisted ground-coupled heat pump system (SAGCHPS) with solar seasonal thermal storage installed in a detached house in Harbin. The solar seasonal thermal storage was conducted throughout the non-heating seasons. In summer, the soil was used as the heat sink to cool the building directly. In winter, the solar energy was used as a priority, and the building was heated by a ground-coupled heat pump (GCHP) and solar collectors alternately. The results show that the system can meet the heating-cooling energy needs of the building. In the heating mode, the heat directly supplied by solar collectors accounted for 49.7% of the total heating output, and the average coefficient of performance (COP) of the heat pump and the system were 4.29 and 6.55, respectively. In the cooling mode, the COP of the system reached 21.35, as the heat pump was not necessary to be started. After a year of operation, the heat extracted from the soil by the heat pump accounted for 75.5% of the heat stored by solar seasonal thermal storage. The excess heat raised the soil temperature to a higher level, which was favorable for increasing the COP of the heat pump. 相似文献