共查询到19条相似文献,搜索用时 203 毫秒
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以采用单管顺流式供暖系统的某建筑物供热热源改造工程为研究对象,探讨了水源热泵 调峰锅炉联合供热系统运行参数的设计基准及热水流量的约束条件。通过对供暖系统热力失调度的计算分析,说明采用设计基准选择的运行参数合理。 相似文献
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污水水源热泵供热技术经济性分析 总被引:1,自引:0,他引:1
随着热泵技术的不断发展,一直未能合理利用污水中的热能逐渐受到人们的关注,被认为是未开发利用的清洁能源。我国可资利用的污水资源十分丰富,应充分利用污水中的热能进行区域供热。本文以含油污水为热源对污水水源热泵供热方案与传统锅炉供热方案进行能耗和技术经济比较,说明污水水源热泵供热方案是一种节能、经济、环保的供热方案。当污水水源温度低于40益时,污水水源热泵供热方案的年费用值低于燃油和燃气锅炉供热方案而高于燃煤锅炉供热方案;当污水水源温度高于50益时,污水直接供热和污水 热泵调峰供热方案的年费用值均低于燃煤锅炉供热方案,可与传统供热方案相竞争。 相似文献
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结合地热供热系统的特点,采用能源中心+末端换热站供热模式,中深层地热承担基本热负荷,天然气锅炉承担调峰热负荷。基于费用年值法,建立了以年运行费用和全寿命周期内费用年值最小为目标的模型。以西安市某新区为例,分析了不同调峰热负荷系数下的能耗、初投资及年运行费用。结果表明,最佳调峰热负荷系数为0.25。 相似文献
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《Energy and Buildings》2006,38(9):1111-1119
İzmir Institute of Technology campus is in use since 2000 and still under development. At present, heating is provided by individual fuel boilers. On the other hand, the campus has a geothermal resource in its borders with a temperature of 33 °C. Because of this low geothermal fluid temperature; heat pump district heating system is considered for the campus. As an alternative, fuel boiler district heating system is studied. Each heating system is simulated using hourly outdoor temperature data. For the simulations, a control system with constant flow rate and variable return water temperature is used and the main control parameter is the indoor temperature. Various heating regime alternatives have been studied for heat pump district heating system for the various condenser outlet temperature and geothermal fluid flow rate, and two of these alternatives are given in this study. Furthermore, economic analysis has also been done for each heating system alternative based on investment and operational costs. Results indicate that heat pump district heating system has the highest investment but lowest operational cost.The alternatives are evaluated according to internal rate of return method, which shows the profit of the investment and resulted that, the heat pump district heating system has minimum 3.02% profit comparing with the fuel boiler district heating system at the end of the 20-year period. 相似文献
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结合重庆地区某湖水源热泵空调系统,实测并分析了负荷率、热泵机组热水进口温度、取水功率对热泵机组制热性能系数、热泵空调系统能效比的影响。 相似文献
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介绍了水环热泵空调系统辅助热源的形式,提出了采用空气源和电加热作为辅助热源的空气源-水环复合热泵空调系统,研究了不同室外温度时建筑不同内外区冷热负荷比下该系统的能耗,分析了循环水温对系统能耗的影响,比较了该系统与采用电热锅炉和燃煤锅炉的传统水环热泵空调系统的一次能耗。 相似文献