共查询到17条相似文献,搜索用时 125 毫秒
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本文阐述了燃气机热泵的工作原理,通过对该设备系统与一般热泵的比较,指出燃气热泵的特点,并对国内外研究和应用发展状况进行了回顾,探讨了燃气机热泵在暖通空调中应用的方法,对其节能效果进行了分析,结果表明采用燃气机热泵具有较高的能源利用系数,指出了燃气机热泵在暖通空调中具有广泛应用的前景。 相似文献
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燃气机热泵空调系统的实际应用 总被引:1,自引:1,他引:0
介绍了燃气机热泵空调室外机的结构。结合工程实例,探讨了燃气机热泵空调系统的设计,介绍了使用燃气机热泵空调系统的体会。分析了燃气机热泵空调系统与常规热泵空调系统、集中供暖系统相比具有的优势。 相似文献
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本文首先介绍了燃气热泵空调系统的工作原理,而后对北京地区燃气热泵空调系统的工程应用进行了技术分析,包括系统设计、安装、调试、运行和检测,最后对该系统在节能性、环保性及舒适性方面的优势进行了讨论。本文可为北京地区发展燃气热泵空调系统提供一定的工程技术参考。 相似文献
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燃气集中空调及其能源效率 总被引:3,自引:0,他引:3
简要介绍了燃气作为空调用能源的由来和特点,燃气作为热源的空调方式,应用燃气发动原动机的全能系统,燃气直接驱动制冷(或热泵)机组、能源效率及工程应用情况。 相似文献
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比较了离心式电热泵和燃气吸收式热泵的原理和各自的优缺点,结合天津某供暖实际案例,对选取地热与热泵联合供暖系统选取离心式电热泵和燃气吸收式热泵这两种方案的投资和运行费用进行对比分析,得出在具体情况下热泵形式的选取方案。 相似文献
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分析了燃气机热泵热电冷三联供系统节能的热力学原理及应用优势,探讨了不同季节采用不同的联供运行模式一次能源利用率PER的情况,并就影响PER的主要因素——废热回收率、热泵性能系数及用于发电的燃气能量占燃气总能量的比例的变动效应进行了模拟计算,给出了燃气机热泵不同联供运行工况下PER的对比及规律。 相似文献
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There is an increasing trend in using heat pumps in air conditioning (heating/cooling) systems of residential and commercial buildings. The required power to drive the compressor of vapor compression heat pump cycles may be provided by either an electrical motor or an internal combustion engine. In this paper thermal modeling and economic analysis of gas engine heat pumps (GEHPs) are presented based on energy and mass balance equations as well as the gas engine operating parameters (such as thermal efficiency, fuel consumption and fuel mass flow rate) and heat pump operating parameters (such as evaporator and condenser capacity and compressor input power). Based on the modeling results and with estimating GEHP fuel consumption, the economic analysis of using gas engine heat pumps (in comparison with the electrical heat pumps) at various climate regions of Iran, for both residential and commercial (office) buildings, and for both cooling and heating modes, was performed. Appropriate cost functions for predicting GEHP capital investment were proposed. Three approaches including equivalent uniform annual cost (EUAC), the annual cost of energy consumption, and payback period were applied in the economic analysis. 相似文献
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The main functions of the heat-pump air conditioning system driven by gas engine (GEHPAC) are to maintain the room temperature and control the humidity of the room. In summertime, the air can be reheated by the waste heat water from the gas engine, while the air can be reheated and humidified by the waste heat water in winter. Reducing or displacing electrical heating requirements can achieve the greatest opportunity for significant energy savings. This paper, therefore, aims to improve the energy performance of the AC system by using the waste heat from the gas engine. The mathematical model for the second heat exchanger, the sprayed room, the mixed air, was used to research the GEHPAC. Explicitly, we investigated the influence of various factors including the outdoor air temperature and humidity in summer and winter. Results from the analysis show that the GEHPAC can save more energy than the electricity engine heat pump. The GEHPAC runs beautifully in part load mode. PERx is higher in winter than in summer. The maximum PERx is over 1.6 in summer, while over 1.9 in winter. The GEHP which can control the room humidity can be used in more areas than the common GEHP. 相似文献
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