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。     

地热直供联合热泵供暖技术的研究与应用

为了响应国家节能减排的政策,改善传统的供暖模式所造成的环境污染和能源浪费,渤海石油水电服务公司在东沽石油新村采用先进的地热联合热泵供暖技术,成功替代了原有的地热直供、燃油锅炉调峰供暖技术,使地热直供供暖尾水得以充分利用,达标25℃进行回灌,并消除了渣油燃料对环境的大量污染,使公司的经济效益和社会效益得到了稳步提升.     

热泵供暖的经济性分析

该文对利用低品位的浅层地下水作为水源热泵的热源，冬季向建筑物供暖的经济性进行了分析研究，结果表明用低品位的地热资源利用热泵技术进行供暖具有很好的节能和环保效益。     

地热-高温水源热泵供热系统的分析

运用能量系统的为(火用)分析方法.建立地热-高温水源热泵供热系统的炯分析理论模型.以实际工程项目为例,分析和讨论了系统运行条件下的能量有效利用,并计算了地热-高温热泵供热系统的火甩效率和各部分(火用)损失、(火用)效率.从计算结果看出,板式换热器的火用损失所占比例较大.     

低焓能源运用热泵供暖的技术经济分析

结合我国国情。讨论了４５－６０℃低焓能源运用热泵供暖的技术经济性，节能效果和环保效益。     

地热直供结合燃气吸收式热泵供暖系统的应用分析

介绍了地热直供结合燃气吸收式热泵系统的工作原理。结合工程实例,对燃油锅炉和地热直供结合燃气吸收式热泵两种供热热源的技术和经济性进行了比较和分析。各采暖期的实际运行数据表明,采用地热直供结合燃气吸收式热泵作为供热热源具有明显的节能效果和经济效益。     

水源热泵在上海的应用探讨

1水源热泵系统的基本形式 水源热泵是一种利用地球表面、浅层水源（如地下水、河流和湖泊），或者是人工再生水源（工业废水、地热尾水等）的、既可供热又可制冷的高效节能空调系统。水源热泵技术利用热泵机组实现低位热能向高位转移，将水体和地层蓄能分别在冬、夏季作为供暖的热源和空调的冷源，即在冬季，把水体和地层等自然界中的热量“取”出来。     

超长重力热管联合热泵的地热利用系统热力经济性分析

深层地热资源储量巨大,采用超长重力热管取热技术对深层地热资源进行开采,将其与热泵系统联合为用户供热是一种高效利用深层地热资源的方法。针对如何调节不同参数下超长重力热管与热泵联合运行以期获得最佳热力经济性的问题,建立了系统热力经济性模型,研究了热泵系统蒸发温度、超长重力热管热阻、井深、地温梯度以及蒸发器面积不同的情况下系统热力经济性变化规律。结果表明存在一个最佳蒸发温度使供热成本最低,如在地温梯度30℃/km、井深3 000 m的条件下,最佳蒸发温度为-2℃;超长重力热管热阻越小或地温梯度越大时可实现供热成本越低且最佳蒸发温度越高;存在最佳的井深和蒸发器面积使得供热成本最低。研究结果可为优化超长重力热管在开采深层地热联合热泵系统性能方面提供理论指导。     

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。     

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     

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     

A new type of district heating system based on distributed absorption heat pumps

Large district heating (DH) system accounts for 70% of urban building heating in China. In North China, this proportion is even higher (The North China is the north of the Huai River and Qinling Mountains). Many cities in North China can exploit various kinds of low-grade renewable energy. This paper presents a new heating method to realize renewable energy recovery by absorption heat pumps associated with municipal network. In the DH substations, absorption heat pumps are driven by the exergy-difference originated from the larger temperature difference of heat exchange between primary and secondary heat network. There are two configurations—type I and type II substations based on the temperature of renewable energy. A reasonable parameter setting of system is suggested. The equipment operational performance was optimized based on a practical example. The low-grade renewable energy can be recovered effectively in this method. As a result, both heating capacity and energy efficiency of the DH system can be improved. Furthermore, operating costs may be reduced remarkably, due to the reduction in both the coal consumption of heat production unit and the power consumption of delivery pump. Therefore, the system is superior in energy conservation and has a promising application prospect.     

Optimization model analysis of centralized groundwater source heat pump system in heating season

The ground-water heat-pump system (GWHP) provides a high efficient way for heating and cooling while consuming a little electrical energy. Due to the lack of scientific guidance for operating control strategy, the coefficient of performance (COP) of the system and units are still very low. In this paper, the running strategy of GWHP was studied. First, the groundwater thermal transfer calculation under slow heat transfixion and transient heat transfixion was established by calculating the heat transfer simulation software Flow Heat and using correction factor. Next, heating parameters were calculated based on the building heat load and the terminal equipment characteristic equation. Then, the energy consumption calculation model for units and pumps were established, based on which the optimization method and constraints were established. Finally, a field test on a GWHP system in Beijing was conducted and the model was applied. The new system operation optimization idea for taking every part of the GWHP into account that put forward in this paper has an important guiding significance to the actual operation of underground water source heat pump.     

A renewable energy system in Frederikshavn using low-temperature geothermal energy for district heating

The Danish city Frederikshavn is aiming at becoming a 100% renewable energy city. The city has a number of energy resources including a potential for off-shore wind power, waste and low-temperature geothermal energy usable as heat source for heat pumps producing district heating.     

Energy and exergy analysis of Salihli geothermal district heating system in Manisa,Turkey

This study deals with an energy and exergy analysis of Salihli geothermal district heating system (SGDHS) in Manisa, Turkey. In the analysis, actual system data are used to assess the district heating system performance, energy and exergy efficiencies, specific exergy index, exergetic improvement potential and exergy losses. Energy and exergy losses throughout the SGDHS are quantified and illustrated in the flow diagram. The exergy losses in the system, particularly due to the fluid flow, take place in the pumps and the heat exchanger, as well as the exergy losses of the thermal water (e.g. geothermal fluid) and the natural direct discharge of the system. As a result, the total exergy losses account for 2.22, 17.88 and 20.44%, respectively, of the total exergy input to the entire SGDHS. The overall energy and exergy efficiencies of the SGDHS components are also studied to evaluate their individual performances and determined to be 55.5 and 59.4%, respectively. Copyright © 2005 John Wiley & Sons, Ltd.