共查询到19条相似文献,搜索用时 93 毫秒
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介绍一种适用于独户单元房的无压无泵热水供热系统的作用原理。并讨论了室内耗热量的计算、锅炉容量及散热器片数的确定等问题。 相似文献
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改造区域供热系统为区域供热与供冷联合系统 总被引:2,自引:0,他引:2
本文阐述了应用吸收式制冷机为冷源的区域供冷系统的优势与前景,介绍了目前世界最大的区域供热供冷系统-韩国汉城区域供热供冷联合系统及其设计得芬兰埃柯诺能源有限公司。根据汉城系统的设计与运行经验,提出了设计建设区域供热供冷联合系统时应考虑的一些重要内容。介绍了先进的适用于低温区域供热系统的新型低温热水溴化锂制冷技术,该技术应用80℃热水驱动制冷机组,不仅可实现较高的COP值而且可使回水温度降至55℃以下 相似文献
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介绍了吸收式热泵基本原理,论述了增热型和升温型吸收式热泵的差别和适用性,以及使用两种热泵供热时的注意事项。 相似文献
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结合工程实例,对燃气溴化锂吸收式热泵在供热工程的应用进行了探讨。将既有一级管网部分回水作为热泵主要热源,将燃气作为热泵辅助热源,对新建居住建筑供热。介绍了供热系统的设计思路、流程、运行状况。 相似文献
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介绍地热耦合热泵供热系统(以梯级利用地热水热量为原则,采取地热水直接供热与热泵机组利用地热尾水余热的供热系统)设计方案的工艺流程、运行策略,建立供暖期系统能效比的计算模型。结合算例,在分阶段改变流量的质调节运行方式下,对两种地热耦合热泵供热系统的供暖期系统能效比进行计算。方案1:制热设备(地热水换热器、热泵机组)与供热循环泵采取一机一泵的固定设置。方案2:供热循环泵集中并联设置。对于方案1,供热循环泵与制热设备对应关系固定,启用某台制热设备时必须启用相应的供热循环泵。与方案1相比,由于方案2的供热循环泵集中并联设置,供热循环泵与制热设备的对应关系相对松散,匹配更加灵活。方案1、2的供暖期系统能效比分别为9.20、10.03。与方案1相比,方案2的供暖期系统能效比提高9%。 相似文献
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This paper proposed a new solar assisted air source heat pump system with flexible operational modes to improve the performance of the heating system. A mathematical model was established on the solar assisted air source heat pump system for building heating with a heating capacity of 10 kW, and an air source heat pump unit was developed to validate the model. The effect of the solar collector area on the performance of the system running in Nanjing was studied. The results showed that the COP of the heat pump unit was enhanced with the increase of the solar radiation density during the typical sunny day in the heating season. In addition, the COP also increased in proportion to the solar collector area. Compared with the case when the solar collector area was 0 m2, the COP increase of the heat pump and the energy-saving rate were 11.22% and 24% respectively when the solar collector area was 40 m2. Meanwhile, the solar equivalent generation power efficiency could reach 11.8%. 相似文献
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As a renewable energy utilization system, the electric-driven seawater source heat pump district heating system is gaining popularity in some coastal areas. However, under what conditions can the system achieve its energy-saving effect and how to evaluate its energy-saving potential are not clear in practice. In this paper, an expression of the critical COP value of the heat pump unit for energy-saving (COPh,c) is derived through the comparison of the system and the conventional boiler house district heating system in the energy consumption respect. On the other hand, the actual COP values of the heat pump unit (COPh,a) are calculated by an experimental data regression model on the basis of the manufacturer's dataset. The comparison of the values of COPh,c and COPh,a makes the energy-saving judgment of an electric-driven seawater source heat pump district heating system and its energy-saving potential, if it has, readily available. It was found that both the heating district radius and the natural conditions of the seawater are the most important factors that determine the energy efficiency of the system. And through comparison, it was also found that the type of the fuel of the boiler has significant impact on the crucial index value of COPh,c. 相似文献
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对太阳能热水系统和地源热泵系统在工程实际中的应用情况进行了比较分析,分别就其工作原理、优缺点等作了论述,以期更有针对性的推广和应用这两种可再生能源系统。 相似文献
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介绍了地源热泵技术的概念及工作原理,对地下水热泵系统、地表水热系统等三种地源热泵空调的应用方式作了阐述,经与传统的中央空调作比较,提出了国内外地源热泵的发展前景。 相似文献
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从基本原理及技术方案、经济分析等方面阐述了水源热泵系统在住宅供热空调中的应用,提出了中国水源热泵推广应用中存在的问题,对我国供热、环保和节能方面都有促进作用。 相似文献
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空气源热泵用于住宅地板辐射供暖的实测研究 总被引:2,自引:1,他引:2
在南京一住宅作了一个供暖期的运行实测,由测定结果和统计计算获得了热泵系统在不同室外天气条件下的运行参数、能耗、运行费用、房间空气温度、平均辐射温度、作用温度等数据,证明在该地区这种供暖方式是经济、舒适、可行的。 相似文献