太阳能热泵地板辐射供暖系统

太阳能热泵低温地板辐射供暖系统是将太阳能、水源热泵和地板供暖结合在一起的新型采暖方式。介绍了太阳能热泵低温地板辐射供暖系统的工作原理和构成,并以青岛地区为例,设计了太阳集热器、蓄热器、地板换热盘管等设备,探讨了系统的设计方法。     

太阳能、热泵与低温地板辐射采暖系统

从节能和环保的角度出发,探讨了将太阳能和热泵联合运行作为低温地板辐射采暖的热源的两种方式,并结合一个算例分析了太阳能、水源热泵与地板辐射采暖系统联合运行的节能性和经济性。     

气液分离两翼式热管用于辐射采暖的特性分析

为了适应舒适的辐射采暖系统,降低低温地板辐射采暖系统的供水温度的需要,通过对传统热管工作原理及其结构的分析,发现传统热管应用于辐射采暖具有一定的局限性,针对传统热管用于辐射采暖的局限性,提出了一种低温地板辐射供暖用的新型热管的设计方案。该新型热管的特点在于实现了气相工质和液相工质相互独立流动,减小了流动阻力,避免了热管的携带极限、干涸极限等传热极限的发生;并且增大了蒸发段和冷凝段换热面积,使热水管道与地板层的换热量显著增加。该热管应用于低温地板辐射供暖系统可以增大换热面积、提高换热量、降低供水温度,从而达到节能的目的,同时,为太阳能等低品位能源直接应用于供暖系统的研究提供参考。     

实用太阳能低温热水地板辐射采暖系统设计

针对我国能源消耗结构带来的环境问题,在现有太阳能资源和低温地板辐射采暖理论基础上,设计了家用小型太阳能低温热水地板辐射采暖系统。介绍了系统结构和工作原理,并以云南香格里拉气象条件为例对所设计的系统进行了实例计算,在采暖代表日,集热器与采暖房间的面积之比约为2:5。此系统具有较好的经济、节能、环保效益,具有良好的推广应用价值。     

太阳能低温热水地板辐射供暖系统的研究

低温地板辐射供暖具有舒适、节能、清洁等许多优点，这种供暖方式已在我国北方得到广泛的应用。研究、开发廉价和清洁的辐射供暖的低温热源－太阳能，对于大面积推广低温辐射供暖系统具有十分重要的意义。     

太阳能采暖系统的基本类型

在第一讲介绍太阳能供热采暖系统分类的基础上,本讲着重讨论其中最基本的液体集热器太阳能采暖系统、空气集热器太阳能采暖系统和低温热水地板辐射太阳能采暖系统.     

太阳能辐射采暖系统及其设计

地板辐射采暖方式已在我国广泛地应用。由于这种采暖方式要求水温不高，利用太阳能集热系统作为采暖热源是比较理想的。介绍了太阳能集热与热泵技术结合的采暖及其设计步骤、计算方法等。     

太阳能低温地板辐射采暖系统的效益分析与评价

介绍太阳能低温地板辐射采暖系统的工作原理和形式,结合某一顶层复式住宅用能源价格法对太阳能地板采暖与常规热源进行经济性分析,并从节能效益、环保效益和投资回收期等3个方面进一步分析太阳能地板采暖系统的优势,对各方案进行综合评价,对该系统的普遍应用进行了展望。     

国内可再生能源文献信息

GN080101 甲醇-水蒸气重整制氢反应器新进展;GN080102 中国传统民居外窗遮阳系数研究;GN080103 天然采光对建筑能耗影响的研究;GN080104 地源热泵的地域特性及热平衡问题;GN080105 太阳能热泵低温地板辐射供暖系统的研究与展望……     

两种太阳能采暖形式的对比与分析

太阳能供热采暖系统是近年来国内逐渐发展起来的太阳能热利用技术.目前,国内安装的太阳能供热采暖系统,大致分为太阳能低温热水地板辐射采暖和太阳能散热器对流采暖两种形式.     

太阳能地板辐射系统用于夜间采暖时系统性能的实验研究

利用太阳能集热器制得低温热水作为地板辐射采暖系统的热源,是一种清洁、节能、舒适的采暖方式。在南京地区搭建了太阳能地板辐射采暖系统实验台,系统运行策略为白天集热、夜晚采暖,通过实验得到了集热器集热效率、地板进出水温度、室内不同朝向围护结构温度、不同高度的空气温度等参数,最后对系统的性能进行了概括和总结。     

空气源-地板辐射采暖系统的应用研究

对地板辐射采暖系统在南方采用空气源热泵作为热源的优势进行了分析;并对设计选型及应用中该注意的问题进行了说明.最后,从长远角度探讨了该系统的发展前景.     

低温地板辐射采暖构造层传热模拟

本文针对以哈尔滨为代表的寒冷地区的低温热水地板辐射供暖系统的传热特点和铺设方式，建立了构造层内传热过程的数学模型，分析了低温热水地板辐射供暖系统的热工性能，确定了构造层内温度分布、地板表面温度分布、单位面积散热量等设计指标与管间距、水温、表面材料之间的定量关系。     

A comparative study of solar assisted heat pump systems for canadian locations

The feasibility of solar assisted heat pump systems for space heating and domestic hot water preheating in Canada is examined by simulating the performance of these systems on a computer using the program WATSUN. Simulations are carried out using meteorological data for seven representative Canadian cities, two different building types, and six types of system configurations. For the solar assisted heat pump system, twenty year life cycle cost comparisons are made with two reference systems, namely a conventional resistance heating system and an air-to-air heat pump system, based on current economic parameters and projected escalation scenarios for electricity rates.Results of the study show that the solar assisted heat pump systems conserve significant amounts of energy over resistance heating and heat pump systems. On the life cycle unit cost basis, solar assisted heat pump systems costs are relatively insensitive to location, but the dependence on building types is substantial with multiplex dwellings showing the least cost. Liquid based dual source solar assisted heat pump systems are found to be cost effective over resistance heating (but not over an air-to-air heat pump system) at some of the locations for multiplex units. They are not cost effective for single family dwellings at the present time.     

别墅型建筑地源热泵空调系统设计

地源热泵是一种利用土壤所储藏的太阳能资源作为冷热源进行能量转换的供暖制冷空调系统,通过输入少量的高品位能源(如电力、机械功、燃气和液体燃料),实现热量从低温热源向高温热源的转移.以上海某小型别墅为对象,设计了一套家用地源热泵空调系统.首先计算了夏季冷负荷和冬季热负荷,然后根据冷、热负荷选择一套水源热泵机组(MWH080CR型机组)和相应的风机盘管,进行了室内水管环路系统、土壤热交换器和地板采暖的设计选型,最后对系统的能效比进行了计算.结果表明,该空调系统具有节能环保、稳定可靠、舒适耐用等优点.     

如何保证地源热泵式沼气池加温系统长期稳定运行

针对地源热泵式沼气池加温系统中出现的冬夏季取排热不平衡从而影响其长期稳定运行的问题,本文在采取控制运行方式、增加辅助热源和蓄热系统解决方法的分析基础上,从充分利用可再生能源和地源热泵设备的角度出发,提出热泵供热和制冷互补模式与太阳能-地源热泵多功能互补模式,并对其可行性进行分析。     

Application of a ground source heat pump system with PCM‐embedded radiant wall heating for buildings

This paper deals with the utilization of a renewable energy‐based integrated system with the latent heat storage option for building thermal management systems. Both energy and exergy‐based assessments of the current combined system are conducted. For this purpose, phase change material (PCM)‐embedded radiant wall heating system using solar heating and ground source heat pump (GSHP) is studied thermodynamically. Heat is essentially stored within the PCMs as used in the panels to increase the effectiveness. The stored heat is released when the solar energy is not available. In the thermal energy storage analyses, four different PCMs are considered. The present results show that the overall first ‐ law (energy) and second ‐ law (exergy) efficiencies of the PCM‐free radiant heating system are much lower than the case with the PCM‐embedded radiant heating system. Therefore, it is confirmed that the energy efficiency increases from 62% to 87% while the exergy efficiency rises from 14% to 56% with the option where SP26E PCM is employed accordingly.     

室内低温热水地板辐射供暖系统的节能分析

本文阐述了低温热水地板辐射采暖分户热计量系统是一种易控、易调、节能的采暖系统,讨论了地板辐射供暖方式与其他方式在房间内人体热舒适方面的差异,并通过对其综合节能效果的考察,分析了地板辐射供暖系统不稳定供暖过程的数学模型,用数值计算的方法分析了间歇供暖条件下,达到室内要求温度所需的预热量与预热时间的关系。     

Solar-assisted absorption heat pumps feasibility

An absorption system can be used for space cooling as well as for space heating. This dual purpose may be achieved by using the system as heat pump in wintertime. Absorption heat pump heating may be an interesting alternative, particularly for countries where there is a shortage of electric power.When an absorption unit is used as heat pump, its mode of operation is not modified: the internal temperatures of the cycle are only raised. Commercially available LiBr units were tested as heat pumps. COP and heating capacity were considered as a function of cold source temperature for different temperatures of the useful heat. The COP arrived at 1.7, which must be considered a high value for a thermally driven heat pump.Simulations were carried out in order to compare the performance of “conventional” solar, solar assisted heat pump and the combined series system under two different climate conditions. The series system showed performance 25–75 per cent better than “conventional” solar alone.     

太阳能蒸发面板为辅助热源的空气源热泵系统的分析

在传统太阳能热泵基础上,提出中间安装有制冷剂蒸发管的太阳能为辅助热源的空气源热泵,能够解决夏季制冷、冬季采暖和全年热水供应问题,同时在寒冷高湿地区也可以除霜。节能经济性可观。