集中式太阳能热水系统管道和水箱在高层建筑中的实践

在高层建筑上采用集中式太阳能热水系统时,因部分管道处于高空露天的苛刻环境中工作,管道易发生堵塞、冻结和腐蚀等问题,造成系统的失常或瘫痪.因此,安全可靠的管道设计施工、健全有效的管理规章制度是系统安全运行的保证,也是太阳能热水系统的关键技术之一.     

集中式太阳能热水系统的实际运行效果分析

通过建有两个全天候24h监控系统的太阳能热水系统工程,真实地反映了太阳能热水系统使用中的参数变化,分析了理论计算与实际数据的差别,为太阳能热水系统的设计提供了实践依据.     

太阳能热水系统热性能计算可视化软件的开发

热性能是家用太阳热水系统重要的质量指标,是可以直接决定系统合格与否的主要因素.本文依据反射器的类型,对太阳热水系统进行系统分类,并采用Visual Basic编程,开发不同类型的家用太阳能热水系统热性能计算软件,该软件计算准确,使用方便,它的可视化界面,能够有效的实现人一机对话.     

太阳能热水系统的应用研究

文中列举了南京市若干太阳能热水系统与建筑一体化工程概况,建议集体单位大力推广应用太阳能集中热水系统;对居民小区住宅,适合分户使用太阳能热水系统,不宜应用太阳能集中热水系统。     

太阳能生活热水系统应用研究

介绍了太阳能热水系统的基本形式,以及其相应的太阳能热水器、集热板的优缺点.并阐述了太阳能建筑一体化技术应用也是实现建筑节能与住宅建筑可持续发展的亮点.     

环境条件对全玻璃真空太阳能热水系统热性能的影响

对同一太阳能热水系统在不同环境条件下得热量和热损的多次试验,计算了系统标准单位轮廓采光面积的日有用得热量和平均热损因数,并分析了太阳辐射量、环境风速和温度对系统得热量和热损的影响规律。     

再议太阳能热水器集中热水系统设计

随着太阳能热水器使用的日益增多 ,太阳能集中热水系统也将越来越多地进入我们的设计工作中。如何做好太阳能集中热水系统的设计 ,是我们设计者应重视的一个问题。由于太阳能热水器与我们过去传统的加热设备相比 ,有其不同的特点 ,故在设计时 ,如处理不当将会产生不良的后果 :或使用不便 ;或达不到使用太阳能热水器的节能目的。下面就将这方面的问题结合自己的设计体会作一些探讨。1　太阳能热水器的工作特点(1)季节性太阳能热水器在夏季产生的热水量较多 ,在冬季产生的热水量较少 ,这与我们通常夏季使用的热水量较少 ;冬季使用的热水量较多…     

太阳能热水空调建筑一体化系统

设计了太阳能热水空调建筑一体化系统。该系统由2台冷水水冷机组、2个平板型太阳能集热器单元、1个贮热水箱、2个贮冷水箱和77台供冷终端组成,为海南省昌江县人民医院内儿科77个病房提供空调冷量和洗澡用热水。该系统初投资少,设备利用率高。经过1年的应用运行,取得了节约能源、减少对环境热污染的效果,为更好地推广应用太阳能探索一条新的路子。     

Parametric study of the overall performance of a solar hot water system

The effect of varying individual parameters on the overall performance and feasibility of a solar hot water system has been investigated by a mathematic model which employs the concept of a decay constant and feasibility factor. TRNSYS results were used as inputs to apply the model. Parameters investigated include emittance of the collector plate, collector plate absorptance, transmittance absorptance product, storage tank set temperature, mass flow rate, load, and ratio of tank volume to collector area. It was found that the model is a useful tool for solar system design. Specific examples are detailed for illustration purposes.     

Experimental study of the burning-cave hot water soil heating system in solar greenhouse

In the northern China areas, the traditional heating methods are widely used in solar greenhouse, for example: electric heating, hot air heating, hot water heating, burning-cave heating etc. If copying the assuring building indoor environment of constant heating ways into solar greenhouse, it will further increase building energy consumption, thus improving the efficiency of energy utilization, establishing appropriate growing environment, and realizing the agricultural waste recycling are important ways of consistent with the Chinese conditions, construction of sustainable development, improving the efficiency of the greenhouse production. To solve the problem of traditional heating method for high heating energy consumption, the inharmonious between greenhouse air temperature and soil temperature, uneven soil temperature, the research build the burning cave hot water soil heating system of solar greenhouse experimental platform in accordance with principle of energy cascade utilization. This experiment platform will transfer burning cave internal heat into soil heating system. The soil is evenly heated by system. Through testing the actual operation effect of the burning cave hot water soil heating system of new solar greenhouse, electric heating system, no taking any heating measures system, burning cave hot water soil heating system of solar greenhouse can improve the soil average temperature 5 ∼ 6 °C. This research provides experimental basis for practical applications and promotion.     

Assessing solar hot water system performance with GIS

Current solar hot water (SHW) system modelling techniques, as applied in Australia, are inadequate for the demands of programs and policies that aim at widespread usage of SHW. Two major problems with current modelling techniques are the coarseness of modelling in a spatial context and the use of only two hot water load categories. These problems are described and suggestions are offered for improved modelling processes. Geographical information systems can be used in conjunction with existing SHW performance evaluation tools to produce models with much finer spatial resolution than those currently in use. It is recommended that categories used for evaluating SHW systems should be based upon household size. Methodologies for modelling SHW system performance that conform to these recommendations are described in this paper.     

Design of a commercial solar hot water system

The paper critically evaluates the design and performance of a commercial hot water system. These systems are installed in IIT Delhi hostels mainly for cooking and washing utensils. In some of these systems, heat exchangers are also used. In specific terms, one can regard the thermal efficiency and the maximum hot water temperature as indicators of the performance of the system. Hence different parameters of the heat exchanger and the number of collector panels directly affect the performance of the system. In the paper, an energy balance for different components of the system under steady state conditions is primarily investigated. It is found that excellent agreement exists between experimental and theoretical results for the proposed design parameters.     

以太阳能/空气为热源的直膨式热泵热水系统

介绍了一种直膨式太阳能热泵空调及热水系统。针对春季供热水工况，分别对以太阳能及空气为热源生产生活热水进行了比较，发现以太阳能为热源具有更高的COP值，节能效果更为显著；根据试验数据分析了压缩机工作频率、太阳辐射强度、环境温度等因素对热泵系统性能系数的影响。     

太阳能热水系统蓄热水箱技术的研究进展

蓄热水箱是太阳能热水系统的重要组成部分,蓄热水箱技术对系统的性能具有明显的影响。文章分析了太阳能热水系统蓄热水箱技术的发展,阐述了太阳能热水系统蓄热的主要形式、不同工作阶段的过程和特点以及蓄热水箱的理论和技术的研究进展。     

太阳能空调热水系统研究分析

前言日益普及并呈加速发展的室内空气调节 ,需要消耗大量电能和化石燃料。常规空调制冷剂ＣＦＣｓ 对大气臭氧层有破坏作用 ,影响环境。因此 ,在空调制冷技术的发展与应用中 ,面临着节电、节能和环保三大问题。当前不用氟氯烃作工质、热驱动的吸收式制冷 ,日益受到人们的重视。太阳能是取之不尽 ,用之不竭 ,可再生的清洁能源。太阳能热水器现已发展到非常成熟的水平 ,它是以获取生活热水为目的的。但这种应用方式与人们的生活需求正相反 ,当夏季太阳辐射强、气温高的时候 ,太阳能热水器产生的热水量最大 ,而此时最需要的是空调降温而不是热…