共查询到18条相似文献,搜索用时 125 毫秒
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随着建筑节能的推广和人们对室内生活舒适性要求的提高,采用一种更先进、更节能的室内空气调节系统就显得日趋重要。毛细管型辐射供暖与供冷系统因具有舒适度高、节能效果显著、节省建筑空间等的优点逐渐被广泛采用。对以毛细管为末端的毛细管型辐射供暖与供冷系统布置形式作了介绍,分析了该系统的组成及优点。以辐射供冷为例,探讨了辐射冷系统的末端一毛细管席供冷量的影响因素。 相似文献
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冰蓄冷空调系统的评价方法 总被引:9,自引:1,他引:9
本文分析了影响冻蓄冷空调经济效益和社会效益的因素,建立了一个评价冰蓄冷空调经济性的模型,归纳出评价冰蓄冷空调系统社会效益和经济效益的五项指标,高峰用转移率,蓄冷率,制冷机容量变化率,性能系数降低率,增加投资回收年限。 相似文献
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太阳能空调系统特征方程的研究 总被引:2,自引:0,他引:2
通过对太阳能空调系统中能量转换过程的分析,运用一新无因次参数,建立了表征太阳能空调系统热性能特点的特征方程,揭示了系统日制冷量与吸收式制冷机的性能系数以及太阳辐射参数之间的线性关系,并通过将该特征方程用于计算-太阳能空调系统的年制冷量,介绍了特征方程的应用。 相似文献
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冰蓄冷空调系统的评价方法 总被引:5,自引:0,他引:5
本文分析了影响冰蓄冷空高经济效益和社会效益的因素,建立了一个评价冰蓄冷空调经济性的模型,归纳出评价冰蓄冷空调系统的五项指标:高峰用电转移率,蓄冷率,制冷机容量变化率,性能系数降低率,增加投资回收年限。 相似文献
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江阴市某纺织品整理车间设计空调系统,对车间进行降温,改善工人工作环境。针对达到规范所要求的室内温湿度和适当放宽室内温湿度(在人体舒适区域内)时,提出蒸发冷却与机械制冷相结合的空调方案及蒸发冷却空调方案,并根据各自方案的特点、风量及制冷量等情况,得出应用蒸发冷却空调的可行性,最后根据此车间的特点,对方案进行优化,使得蒸发冷却与工位送风相结合,初投资和运行费用更低、节能效果更加显著。 相似文献
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厨房通风空调系统设计新思路 总被引:1,自引:0,他引:1
针对已有的厨房空调通风系统设计中存在的问题而导致换气次数高、能量消耗过大等现象,提出了几点新的设计思路:根据厨房内污染物产生源的分布和厨房自身的运作特点,划分空调控制区和非控制区;以空气幕送风方式将室外新风直接送到炉灶周围,高效率地满足炉灶燃气燃烧需氧量要求,并利用风幕的空气动力控制污染物溢出,减少残留率;采用主、副送排风系统,以满足厨房在不同工作时段下空调系统节能的需要。 相似文献
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机械制冷转轮除湿复合空调系统 总被引:1,自引:0,他引:1
在转轮除湿与机械制冷相结合的复合空调系统中,湿负荷由热量来承担、可有效地提高系统的经济性,降低能耗。天然气发动机直接驱动制冷与转轮除湿相结合,与常规冷冻减湿系统相比,空调系统的湿负荷越大,复合系统的优势越明显。 相似文献
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Although solar energy is able to power the heat-driven refrigeration, its contribution is quite limited due to the conventional cooling requirement. In building air-conditioning, it is common to supply low temperature chilled water, usually in 5–7 °C. If this temperature can be elevated, it would enhance the effectiveness to harness solar energy and minimize auxiliary heating. Solar refrigeration would then be more effective through high temperature cooling, by providing 15–18 °C chilled water instead. In such provision, radiant ceiling cooling can be coupled to handle the space cooling load, particularly space sensible load. And the space latent load and ventilation load are handled by a separate dehumidification provision, like the heat-driven desiccant dehumidification. Therefore, a solar hybrid air-conditioning system is formulated, using adsorption refrigeration, chilled ceilings and desiccant dehumidification. In this study, the year-round performances of the proposed solar hybrid air-conditioning systems were evaluated for two typical office types. The performance metrics include the solar fraction, coefficient of performance, solar thermal gain, primary energy consumption and indoor conditions. Comparative study was conducted for the hybrid air-conditioning system worked with the three common types of chilled ceilings, namely the chilled panels, passive chilled beams and active chilled beams. The solar hybrid air-conditioning system was also benchmarked with the conventional vapour compression refrigeration for office use. It is found that the proposed solar hybrid air-conditioning system is technically feasible through high temperature cooling. Among the three types of chilled ceilings, the passive chilled beams is the most energy-efficient option to work with the solar adsorption refrigeration for space conditioning in the subtropical city. 相似文献