太阳能-地源热泵联合空调技术的工程应用

介绍了太阳能-地源热泵联合空调技术的发展现状,并以甘肃土木工程科学研究院综合办公楼太阳能-地源热泵联合空调系统为例,详细介绍了太阳能-地源热泵联合空调系统的设计思路,地埋管设计与安装要点,以及其运行费用及环境效益分析,得出结论:太阳能-地源热泵联合空调系统具有很好的发展与运用前景.     

太阳能辅助地埋管地源热泵供热系统运行模拟

某工程拟采用太阳能辅助地埋管地源热泵联合供热系统.介绍联合供热系统流程,建立联合供热系统的数学模型,对最冷日集热器有效输出能量、供暖室内实际温度进行了模拟计算.     

深井和回灌井联合系统的设计和应用

介绍了深井和回灌井联合系统的基本原理,阐述了该系统的设计步骤,并结合工程实例分析了其优点和应用前景,认为用深井和回灌井联合系统降水法能有效降低基坑地下水位,控制邻近建筑物的沉降。     

地板辐射供暖系统与热源系统的联合运行

介绍了地板辐射供暖系统与风机盘管联合供暖的原理、系统的控制与调节,分析了地板辐射供暖系统与空气源热泵、太阳能-地源热泵的联合供暖系统的特点与优势。地板辐射供暖系统与多系统联合供暖在节能、环保方面优势明显,发展潜力大。     

油田联合站应用太阳能加热原油技术研究

结合油气集输系统的生产工艺,设计了油田联合站太阳能加热输送系统。介绍了该系统的工艺流程及设备选型,对该系统的环保效益进行了分析。     

军事院校图书馆联合数字信息咨询服务研究

本文首先介绍了联合数字信息咨询概念和联合的优势,分析了军事院校图书馆联合数字信息咨询服务的目标、系统特点、组织机构、服务层次等内容,最后结合联合数字信息咨询服务注意的问题,提出了几点建议。     

一种加热系统在联合吸污车中的应用

为解决作业温度低于0℃时联合吸污车无法正常使用的问题,给整车设计并加装冬季加热系统。介绍了该系统的工作原理及结构组成,在联合吸污车中应用该系统可使得用于疏通作业的高压水始终处于液体状态,保证联合吸污车能在冬季正常运作。     

散热器-水源热泵联合供暖系统

介绍了散热器和水源热泵联合供暖系统,着重介绍了系统的计算方法.系统中设计了混水装置来调节水源热泵的进水温度,解决了散热器出水温度不稳定对水源热泵的影响.该系统既减少了初投资,又减少了运行费用.     

地埋管地源热泵-太阳能系统用于夏热冬冷地区居住建筑的若干考虑

分析了夏热冬冷地区居住建筑中应用地源热泵系统的全年热不平衡情况及应用太阳能热水系统的局限性,认为夏季地埋管系统多余的释热量可以利用冷却塔等设备辅助散热,与太阳能热水系统联合运行,可为居住建筑提供生活热水.结合实际工程,介绍了联合系统的负荷模拟计算.     

天津市东疆港某小区采暖工程设计

介绍了天津市东疆港某小区采暖工程设计过程,热源采用了燃气空气源吸收式热泵和燃气锅炉联合供热系统,充分发挥了二者的优势,在满足供热需求的前提下,实现了节能供热,并分析了联合供热系统作为热源的工程可行性与经济性,为该联合供热系统的推广利用提供了数据参考。     

复合式风冷热泵机组的研究开发

根据长江流域及其以南地区气候特征,研究开发了复合式热泵机组,机组的冷凝器由翅片管组和光面管组串联组成,兼具风冷冷却和蒸发冷却方式特点,介绍了机组的结构和工作原理,分析了机组的技术经济性,比较了该机组相对于风冷机组的节能效果,认为复合式机组具有市场潜力,该样机经过较长时间的实际运行,冬、夏节能效果显著。     

Energy-saving with a gas engine-driven heat pump

Since May, 1978, a block of flats in Dortmund, Western Germany, has had heating and hot water supplied by an air-to-water heat pump driven by a gas engine. Capacity is 465 kW and the unit has been able to provided this service unaided by supplementary heating with external temperatures as low as — 12 °C. How the installation has performed in use, saving 50 per cent of primary energy compared with conventional methods, is explained here by technical officers of the Dortmund Public Works Department.     

太阳能热泵与地源热泵技术及其联合应用

介绍了热泵、太阳能热泵及地源热泵的基本原理,着重讲述了＂太阳能—地源联合热泵＂系统的实际应用方案及系统的特点,指出热泵系统具有节能和扩大能量使用范围的意义,同时太阳能与地热能作为清洁、总量巨大的可再生能源,两者具有互补性,可以降低常规能源的消耗,具有显著的环保效益。     

地源热泵

针对如何降低能耗,减轻对大气环境污染这一问题,介绍了一种供暖制冷新技术--地源热泵,并阐述了该技术在国内外的发展,通过对土壤源热泵与普通中央空调进行比较,指出了地源热泵的优点,以期推广该技术的应用.     

地埋管地源热泵在高校的应用研究

从经济性、土壤特性、地埋管换热系统的热平衡及用地等方面进行了分析研究,认为地埋管地源热泵用于学校供冷、供暖及提供生活热水是可行的,并有一定的节能效果,经济性较好.     

双级热泵实验台的调试总结

双级热泵系统是获得高温工质的一个重要研究方向。介绍了自行设计的双级热泵实验系统,分析了实验中遇到的问题,提出了改进方案。改进后的实验系统能获得良好的实验效果,达到预期目的。     

Development of a domestic heating only heat pump

The requirements for data to enable designs, performance predictions, and cost analyses to be made for passive solar buildings are considered in the context of the requirements for a representative selection of other solar energy applications. It is shown that the measurements needed at this point in time range from samples of precise details of certain characteristics of solar radiation at time intervals of a few seconds, to estimated solar parameters typical of general climatic conditions at seasonal intervals over time periods of decades. It is concluded that no single set of instruments or data base will ever satisfy the requirements of all potential users. Data requirements are classified under four broad categories and a strategy is suggested whereby specific requirements for data could be obtained at an acceptable cost and accuracy within the framework of a national monitoring network.     

Optimisation of a heat pump space heating system

Because the heat pump has a very high capital cost compared with other forms of space heating, and also because the peak space heating demand in the U.K. only occurs for a few hours in the year, it has become recognised practice to install low capital cost supplementary electric heating to meet peak demands. A technique is described which optimizes the mix of heat pump and supplementary capacity to minimize the total cost of operation. A simulation model is employed which uses a weather tape containing hourly outside air temperatures to generate a space heating demand profile for a building of known thermal characteristics. The technique specifically allows the examination of intermittent heating, and in this paper is applied to a small factory operating on a variety of shift patterns. This application is of particular interest because it considers the effect of maximum demand charges on the economics of heat pump space heating systems. It is concluded that the optimum heat pump capacity depends strongly upon the length of shift, and that optimum oversizing of the heat pump system for intermittent heating appears to be lower than for conventional heating systems as a result of maximum demand pricing.     

Economy of exploiting heat from low-temperature geothermal sources using a heat pump

The article describes the economy of exploiting heat from low-temperature geothermal sources for high-temperature heating of buildings using a heat pump. For the exploitation of low-temperature geothermal sources, a two stage heat pump with a heat exchanger was planned. The pump consists of two single stage heat pumps which use different refrigerants at each stage. At stage 1, the calculation of the heat pump is conducted with refrigerant R407c; at stage 2 of the heat pump, the refrigerant R600a is used. The main operational characteristics of a two stage heat pump are presented in the form of diagrams. For the exploitation of heat from geothermal water with a temperature of 45 °C, a profitability evaluation of the investment in the heat pump was carried out, using the method of the net present value. In the research, also the coefficient of profitability and the period of time in which the investment is going to return itself were established.     

空气源热泵和地源热泵在滨州海洋馆的复合应用

以滨州海洋馆为例,通过方案比选,选择3台制冷量561 kW/台地源热泵机组和3台制冷量130 kW/台空气源热泵机组的复合能源系统.介绍了该系统的运行原理及策略.与传统的电制冷螺杆机组+燃气热水锅炉的能源方案进行了对比,基于系统投资及运行费用的分析得出,该系统的静态投资回收期为1.49 a,该系统用于海洋馆类建筑具有一...