高温水源热泵在地热供暖中的应用

针对目前地热供暖应用的现状，介绍了一种全新的地热、高温水源热泵的供暖方案。在比较了各种常规的供暖模式的经济及环保效益的同时，为低温地热水、地热尾水及其它各种温度在30-60℃之间的中低品位余热水资源提供了一种高效、合理的利用途径。     

地热+高温水源热泵区域供暖工程的环境影响分析

经过分析计算，对区域燃煤锅炉房供暖方式和地热＋高温水源热泵供暖方式对环境的影响做出比较．证明了地热＋高温水源热泵同燃煤锅炉供暖方式相比具有巨大的环境效益。     

地热耦合水源热泵供暖系统可行性分析

针对天津市某高层写字楼的冬季热负荷变化情况，对采用地热耦合水源热泵，同时结合消防水池蓄热的供暖系统进行了分析，研究此系统的技术可行性．经过传热计算，验证该系统可以满足建筑热负荷的要求，分析了其优越性。     

高温热泵供热系统的最佳供热温差

通过对高温热泵系统高低位热源温度特性和热泵循环特性的分析，构造出一个理想的热泵循环。并以此理想循环为基础，以供热系统总能耗最小为目标函数导出跨临界热泵、多级压缩热泵等新型热泵系统的最佳供热温差，为这些热泵在供热系统中的应用提供参数选择的理论基础。     

制冷与热泵系统的分析

介绍了制冷与热泵系统的火用分析方法。通过对系统的各环节的火用损失分析 ,进而得出系统的火用效率。还介绍了减少火用损失 ,提高火用效率的措施     

地热水源热泵技术应用市场前景

该文描述了利用水源热泵技术的直接、间接经济效益和环境效益；并针对水源热泵设备的类型及供暖规模适用范围进行了优化设计；通过动态监测的实际工程运行参数指出使用水源热泵比燃气锅炉更经济。     

水源热泵系统在供热系统中设计案例的应用

以四川省某市实际工程为案例,结合该地区工程应用背景,阐述在该地质条件下,水源热泵系统在该地区供热领域的应用情况.通过分析该模式下的供热系统形式及特点,对比使用该系统与传统供热模式的经济性及环保性,为该系统形式的设计提供参考.     

鞍山千山地区地热结合热泵供暖的应用前景分析

根据鞍山千山地区地热水资源及利用情况，针对3万m^3的供热面积，采用地热热泵以充分利用地热尾水的方案，进行了技术经济分析。     

Exergy analysis of latent heat storage systems with sensible heating and subcooling of PCM

The effect of sensible heating of the phase-change material (PCM) before melting and subcooling after solidification, on the performance of the latent heat storage system (LHSS), is studied in terms of first- and second-law efficiencies for the overall charge–discharge cycle. The external heat transfer irreversibilities on account of the interaction between the heat transfer fluid and the storage element are characterized and the optimum phase-change temperature for maximum second-law efficiency is studied. The performance of the LHSS operation is assessed with and without sensible heating before melting and subcooling after solidification. It is observed that the optimum phase-change temperature is higher, and, the overall second-law efficiency is greater for LHSS with sensible heating and subcooling beyond a certain phase-change temperature compared to latent heat storage alone. In addition, the first-law overall efficiency is found to exhibit a minimum and a pre-heated discharge stream is shown to result in a substantial improvement of the second-law efficiency. © 1998 John Wiley & Sons, Ltd.     

Comprehensive exergy analysis of a ground-source heat pump system for both building heating and cooling modes

This paper presents a comprehensive exergy analysis of three circuits and whole system of a ground-source heat pump (GSHP) for both building heating and cooling modes. The purpose is to search out the key potential energy saving components. The analytical formulae of exergy loss, exergy efficiency, exergy loss ratio, exergy loss coefficient and thermodynamic perfect degree are derived, respectively. The results show that these exergy indexes should be used integratively, and in the whole system the location of maximum exergy loss ratio is the compressor, while the location of minimum exergy efficiency and thermodynamic perfect degree is the ground heat exchanger, so that the compressor and the ground heat exchanger should be primarily improved. The results also indicate that the exergy loss of a GSHP system for building heating mode is bigger than that of cooling mode, and the exergy efficiency of a whole GSHP system is obviously lower than those of its components for both building heating and cooling modes. Therefore, a comprehensive exergy analysis of a GSHP should be paid more attention to. The results may provide guidelines for the design and optimization of GSHP systems.     

热泵干燥系统运行特性的有效能研究

热泵干燥能源消耗少,环境污染小,干燥品质高,适用范围广,是一种性能优良的种子干燥机械。从热力学第一、第二定律两方面分析了热泵干燥系统的节能优势所在,得出采用辅助冷凝器是闭式热泵干燥系统的理想方式;而且热泵干燥系统存在一个最佳的蒸发温度,可使系统除湿率和效率最大。     

利用油田污水余热热泵供暖系统的热力经济分析

介绍了油田余热资源的现状和充分回收采油污水余热的吸收式热泵供暖系统。并与燃油锅炉和燃气锅炉供暖系统对比 ,对吸收式热泵供暖系统进行技术经济分析     

直接膨胀式太阳能热泵系统的理论分析

简述了直接膨胀式太阳能热泵的基本工作原理,从热力学理论出发,对直接膨胀式太阳能热泵的循环进行了理论热力分析,提出了系统各主要部件的能量平衡和火用平衡方程,分析了系统的性能系数COP和火用效率Eη。     

Heat storage-type floor heating system with heat pump driven by nighttime electric power

We performed tests for heat storage-type floor heating that employs a heat pump driven with nighttime electric power for 8 h (11 PM to 7 AM) as the heat source. The phase change material (PCM) applied was a package of mirabilite (Na₂SO₄ · 10H₂O). The melting point is 32 °C, the freezing point 30 °C, and the stored heat amount 43 W · h/kg (ΔT = 10 °C). The test room for floor heating was a wooden structure without windows, and the floor area was 40 m². The hot water panel (5 mm in thickness, made of plastic, 26 m²) was laid on the stage (1.2 m in height) inside the room and the PCM was superimposed on the upper surface of the stage (the total stored heat amount was 28.5 kW). Since the heat pump runs in cycles of 8-h operation and 16-h nonoperation, it needs an extracted heat amount of three times compared with the case of round-the-clock operation. For this reason, we have developed a wet film-type vertical heat extracting tube with a built-in Freon flashing pump to obtain extracted heat about three times greater than was previously possible. We have calculated the heat balance from the results of the tests for floor heating and have studied the practicability of this system. © 1998 Scripta Technica, Inc. Heat Trans Jpn Res, 26(2): 122–130, 1997     

Exergy analysis for stationary flow systems with several heat exchange temperatures

A thermodynamic theory of exergy analysis for a stationary flow system having several heat inputs and outputs at different temperature levels is presented. As a new result a relevant reference temperature of the surroundings is derived for each case. Also a general formula which combines exergy analysis with a modified Carnot efficiency is derived. The results are illustrated by numerical examples for mechanical multi-circuit heat pump cycles, for a Brayton process and for an absorption heat pump.     

地热水高温热泵及风机盘管系统的优化

针对60～85℃地热水的高温热泵及风机盘管供热空调系统,建立系统模型的目标函数;采用MATLAB软件求解出满足约束条件下的各级温度参数以及地热水第一、二级利用的最佳回水温度;从理论上分析了负荷侧供水温度对高温热泵价格和性能系数的影响。