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针对“节能建筑并未实现节能”这一现象提出主要原因--对供热系统节能不够重视。根据实践,提出四个方面的问题及对策;锅炉选型、循环水泵设计、补水泵的节能、配套风机偏大。在上述基础上推荐了三项在运行中行之有效的节能措施,对建筑节能具有积极的现实意义。 相似文献
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应根据供暖建筑室外空气的实际温度进行热水供暖的水温调节,既可以稳定室内供暖温度,又利于节能,提高了水温调节的方法和措施。 相似文献
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针对"节能建筑并未实现节能"这一现象提出主要原因--对供热系统节能不够重视.根据实践,提出四个方面的问题及对策:锅炉选型、循环水泵设计、补水泵的节能、配套风机偏大.在上述基础上推荐了三项在运行中行之有效的节能措施,对建筑节能具有积极的现实意义. 相似文献
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目前确定循环泵工况点参数(流量和扬程)一般多采用图解法。本文介绍一种循环水泵运行工况点流量和扬程的简化法,比图解法简便迅速。 相似文献
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塑料类管材,正在低温热水地板辐射采暖中得到越来越广泛的应用。其中,仅有一部分管材,应用于输送热介质,塑料管材同钢管等金属管道相比,其热力学特性有较大区别。本文简要阐明其物理力学特性,并提出其在低温热水地板辐射供暖应用中应注意事项。 相似文献
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介绍了别墅型太阳能中央热水系统的组成、工作原理和性能特点,并与其它形式的热水系统的综合性能进行了比较.实际工程应用表明:别墅型太阳能中央热水系统是一种节能、环保、安全、高效的热水装置,每平方米太阳能热水器的年平均获热量(每年按360 d计)相当于1 200 kWh的电力、500 kg煤和180 kg液化气通过相应装置得到的热量. 相似文献
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应用质量和能量守恒定律,创建间接连接热水区域供暖系统动态模型。通过仿真,分析系统补水率、散热器及换热器面积、室外温度、太阳辐射、室内得热、散热器循环流量和供水温度对系统和用户运行的影响。根据燃料控制器及温度控制器不同配置,仿真及分析了6种控制策略运行和能耗情况。控制仿真显示,基于用户侧的控制策略可实现系统节能及用户热舒适性双赢目标。 相似文献
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In this paper, the hot water heating wallboard with phase-change material (PCM) was prepared. PCM was added into the wallboard. Intermittent heating mode was used in the experiment. Heat transfer performance of the wallboards was tested and numerically simulated by ANSYS software. The results showed that the temperature and heat flow on the surface of the PCM wallboard (PCMW) were lower than that of the common wallboard without PCM in the heating process. And the decreasing in the temperature and heat flow of the PCMW was lower than that of the common wallboard. The experimental and simulated results were identical in most cases. PCMW can remain a certain heat flow on the inner surface, so it can control the fluctuation of indoor temperature, and enhanced the comfort of indoor climate. Different influence factors and optimal design of the hot water heating phase-change wallboard were analysed. 相似文献
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青藏线太阳能热水供热系统的经济性分析 总被引:2,自引:0,他引:2
运用灰色物元法对太阳能热水供热系统与几种常规能源热水供热系统进行经济性比较 ,分别从初投资、年经营费、安全性、环境影响、技术先进性、操作管理等六个方面进行了定量对比分析。通过建立灰色物元矩阵、满足度函数、确定关联度、确定各评价指标权重等最终确定了最优方案 ,为工程方案的确定提供了理论依据 相似文献
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本文着重讨论了小型凝汽式汽轮发电机组低真空供热的几个问题。实践证明,利用小型发电厂低真空供热运行方式采暖,是一个节约用水、节约用电、节约用煤的节能环保新举措,具有很高的经济效益和环境效益。 相似文献
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This study investigates using exergy analysis the technical factors that influence the feasibility of substituting steam supplied for other energy sources in industrial heating. Some alternative configurations for the steam‐supply system capable of broadening the range of industries able to use the steam for heating are proposed. When examining the feasibility of substituting steam for other energy currencies for providing process heat, exergy analysis quantitatively determines the increase in process efficiency when a lower value energy currency such as steam is used in place of a higher value energy currency such as electricity. Many industries can benefit from using steam for some or all of their heating requirements. An illustrative example for the Bruce Energy Center in Ontario, Canada is presented to demonstrate the importance of using exergy analysis to assess the feasibility of industrial steam process heating. Some alternate reconfigurations of the Center are considered to supply steam at a variety of thermodynamic states, and better match the steam‐state requirements of many industries. The results suggest that exergy analysis should be used as the central tool in process optimization when the use of large quantities of the steam in energy centers is contemplated. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献