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热回收节能在空调系统中的应用 总被引:9,自引:0,他引:9
郑钢 《能源技术(上海)》2005,26(3):124-126
介绍了空调排风系统冷热量回收、冷凝器冷凝热回收以及冷凝水的冷量回收装置的结构和工作原理,对不同类型的热回收装置进行了比较。 相似文献
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热回收蓄能空调系统的应用研究 总被引:7,自引:0,他引:7
本文重点阐述了热回收技术和蓄能技术在空调系统中的应用,在工作原理、节能循环分析、经济性分析、控制和应用注意事项等多方面进行了初步研究,研究结果表明该节能技术在制冷空调系统中的运用大有前途,可以得到大力的推广。 相似文献
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蓄能、热回收技术及其在空调工程中的应用 总被引:1,自引:0,他引:1
本文描述了蓄能与热回收技术,分析了这些技术的主要影响因素,阐明了它们在空调系统工程中的重要作用。文章指出工程技术人员在设计空调系统时必须合理地应用这些技术,使空调系统的能耗减小,从而对环境的影响减少到最小,这样才能做到节能与环保并重。 相似文献
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在自行搭建的双蓄能实验平台上进行了制冷兼蓄热实验研究,对比了制冷兼蓄热模式和一般制冷模式,探讨了不同冷冻水流量和不同风机盘管风量对机组性能的影响.实验结果表明:蓄热对机组制冷端的影响很小,但是由于回收了大量的冷凝热,使得机组的综合能效比得到大幅提高,因此蓄热对空调节能具有较大作用.此外,在制冷兼蓄热模式下,冷冻水流量或风机盘管风量越大,机组的综合能效比越大,当风量为1033 m3/h,冷冻水流量为972 L/h时,机组综合能效比高达7.06. 相似文献
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The energy‐saving effect and economic benefits of a thermosyphon heat recovery unit installed in a shopping mall are investigated. To evaluate the thermal performance of the heat recovery unit in a season, a seasonal temperature effectiveness is advanced, and its calculation formula is deduced referring to the calculation method of seasonal energy efficiency ratio (SEER) for an air conditioner. The annual operating energy‐saving effect of the unit is analyzed by using the seasonal temperature effectiveness while the static economic evaluation method is applied for the economic benefits analysis of the unit. The analysis results indicate the seasonal temperature effectiveness of the unit is 66.08% in the winter and 55.43% in the summer. The energy‐saving effect of the unit is quite remarkable, and the payback time is about 2.65 years. © 2013 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley Online Library (wileyonlinelibrary.com/journal/htj). DOI 10.1002/htj.21049 相似文献
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本文概要介绍了某印刷综合厂房的空调系统设计,总结了空调设计中的成功经验和在此过程中存在的不足,并提出了相应的,可行的改进措施。 相似文献
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水源热泵是一种高效节能、经济环保、安全稳定、冷暖两用、运行灵活的新型中央空调系统,它利用地表水(江、河、湖水)、地下水、工业废水及生活废水,又可用取之不尽的海水等,借助热泵系统,既能制冷、又能制热,是一种高效建筑节能技术。 相似文献
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Mohamed Sakr 《国际可持续能源杂志》2016,35(4):339-359
Due to the scarcity of conventional energy sources, a lot of efforts need to be taken regarding energy conservation in the buildings, including heat recovery of air ventilation systems. The present paper focuses on new methods to improve the thermal performance of the heat recovery system by investigating the heat transfer characteristics and the flow development in a flat-plate heat exchanger (FPHE) using three different rib-grooved surfaces (trapezoidal, triangle and semi-circular), the numerical simulations were carried out for uniform wall heat flux equal to 290 W/m2 for air as the working fluid, the Reynolds number varies from 500 to 2000 for three different channel heights. The numerical results indicated that, rib-grooved surfaces have a significant impact on heat transfer enhancement with an increase in the pressure drop through the channel. The effect of rib-grooved patterns on the heat transfer and the fluid flow is more significant in a narrow channel especially for trapezoidal and triangle corrugated surfaces, because they have sharp edges. Based on the present research, the FPHEs with the added rib-grooved surfaces are recommended to provide an efficient and compact heat recovery system. Moreover, it was found that by applying the new design, a considerable amount of energy and power could be saved. 相似文献
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洁净空调新风量的节能控制与运行 总被引:1,自引:0,他引:1
通过对洁净空调新风系统设计及运行的分析,探讨洁净空调变新风量的必要性和可行性,并利用自控相关理论,设计出在室内人员数量不定的情况下,通过实时监测室内二氧化碳浓度与余压状态来确定送入室内新风量的控制过程,最终达到系统节能的目的。 相似文献