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随着各地燃煤政策的实施,农村社区供暖方式面临着巨大的变革,摒弃旧的燃煤供暖方式,追求清洁舒适供暖已成为趋势。针对农村住宅分散不集中的特点,本文就几种供暖方式各陈利弊,并对燃气壁挂炉供暖与空气源热泵供暖进行经济性比较,发现空气源热泵的初投资相对较高,但从运行费用、使用寿命以及费用年值来看,空气源热泵供暖更具优势。最后提出了一种比较适合农村的基于炕的供暖组合方式,极大提高了居民睡觉的舒适性。 相似文献
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本文介绍了油田余热资源状况和利用情况以及联合站办公厂房供暖现状.给出了直接用电脱水器分离出污水余热供暖方案和热泵系统利用一次沉降罐分离出污水余热供暖方案.并对两个技术方案进行了技术经济性分析.结果表明,油田联合站利用污水余热供暖从技术上和经济上是可行的,它能够带来良好的经济效益和社会效益。 相似文献
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高原地区由于气候原因在供暖时应考虑使用低温空气源热泵,并设置辅助热源进行补充。本文以西藏自治区某医院建筑为研究对象,通过对单一低温空气源热泵供暖、低温空气源热泵+太阳能辅助热源供暖以及低温空气源热泵+电加热辅助供暖三种不同的热源方案进行分析,对比其经济效益、节能效益和环保效益,得出如下结论:低温空气源热泵+太阳能系统与其他两种方案相比费用年值最低,节能减排量最高,具有较好的经济性和环保性。 相似文献
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由小尺度污物引起的污垢等问题成为污水源热泵推广应用的瓶颈,该文首先探讨污水取水换热过程中污垢的形成机理;进而将液固循环流化床技术引入污水源热泵污水侧的防、除垢应用中,考虑碰撞应力以接触面中心呈对称分布的特点,对已有碰撞应力模型进行修正,并以垢层所受到的剥离力(液固两相流对垢层的剪应力与固体粒子对垢层的碰撞应力)来探讨液固循环流化床的防、除垢机理;最后进行液固循环流化床换热器防、除垢特性的实验研究。研究结果表明循环流化床换热技术可有效解决污水中小尺度污物所引起的污垢等问题。 相似文献
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针对当前集中供热工程中供热单位面,临的难题进行了分析,提出了分户计量收费,阐述了分户计量采暖系统应满足的条件,并探讨了施行计量收费存在的问题及相应的解决办法,以期指导今后集中供热分户计量工作。 相似文献
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通过对小区集中供热系统定压补水方式和循环方式的电耗情况的研究,从理论计算和实际运行2个不同角度对收集数据进行分析和对比,找出供热系统的电耗特点,寻求供热系统中可实施节能措施的环节和切入点,配合实现既有建筑节能改造的阶段性目标.合理降低供热系统的电耗,达到供热系统节约能源的目标,为今后小区供热系统的节能改造提供科学依据和借鉴经验. 相似文献
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结合我国能源结构现状,从环保、节能、经济、安全等方面阐述了太原市某住宅小区利用太原市北中部污水处理厂中水作为供暖热源,采用中央液态冷热源环境系统进行采暖的初步方案,并进行技术论证及经济分析,探讨了该系统的可行性和发展前景。 相似文献
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The residential sector consumes a considerable amount of energy for heating and preparing hot water. Little research has been conducted on heating systems in multifamily buildings under working conditions. This article presents the results of experimental research on three commonly used heating systems in multifamily buildings. A central heating and central domestic hot water system (system A), a decentralised system using residential thermal stations (system B) and a decentralised system using bi-functional gas boilers (system C) were analysed over a one year period. The systems analysed were in use in multifamily buildings in Lublin, Poland. The average annual efficiency for system A was 59.6%, that for system B was 70.1% and that for system C, 90.5%. The study determined the decrease in efficiency when the system was producing hot water only versus the system operating during the heating season. These decreases amounted to 20.7% for system A and 8% for system B. The amount of heat delivered and that lost in the respective heating systems were calculated and their relative advantages and disadvantages were identified. Special attention was paid to the amount of heat used for heating the flats of the buildings. 相似文献
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《Energy and Buildings》2006,38(1):45-52
This paper deals with the development of a low cost and low energy consumption air conditioning system based on the conventional central heating installations. It is aimed to convert, with minimal cost and work intervention in the interior of the buildings, the classic central heating systems into a new type system which can cool during summer and heat during winter period. In general, the above mentioned heating–cooling system constitutes an integrated new technology in building air conditioning, with good prospects in replacing eventually the conventional air conditioning systems.The experimental installation is described in detail and the experimental results are presented and analysed. The achieved energy saving is also calculated. The advantages and disadvantages of the proposed system are discussed and useful conclusions are drawn. 相似文献
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国内几种供暖方式的经济技术比较与分析 总被引:6,自引:3,他引:6
对以燃料为能源供暖、电热供暖以及热泵采暖方式等几种供暖方式的优缺点、经济性、应用前景进行比较和分析,提出在目前国内能源结构状态下,如从环境保护和热能利用角度出发,热电联产集中供热将是大城市供热的首选方式;对于既要供暖又要空调的场所,地源热泵在目前能源价格下具有很强的经济竞争力;对于供暖终端设备,地板辐射采暖系统同普通散热器采暖系统成本基本持平,但节能效果显著。 相似文献