共查询到20条相似文献,搜索用时 500 毫秒
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医院能耗结构复杂,而物联网技术能为医院空调系统的节能运行管理提供大量的数据支持。本文以某医院的空调系统现状,结合医院能耗特征,分析了医院空调系统物联网改造方案,并对医院空调系统节能优化策略下的能耗情况进行了分析。通过医院空调系统的物联网改造,为医院后勤人员提供空调系统的详细的运行情况,并为空调系统的节能运行提供数据支持。通过优化冷冻水出水温度和适当关闭风冷热泵机组的夜间运行,可有效降低空调系统的运行能耗。 相似文献
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以采用溴化锂溶液的新型蓄能空调系统为研究对象,采用数值模拟的方法对蓄能空调系统在分量蓄能策略下整个空调季节的工作情况进行模拟,得出蓄能空调系统在整个空调季节内电力负荷转移率的大小以及蓄能空调系统工作性能及参数的变化规律. 相似文献
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文中介绍了目前车用空压机的取气方式、取气位置、主要故障模式和对应的主要影响因素;并针对不同的空压机取气位置进行了整车对比验证分析。结果表明:远离增压器取气、直接在空滤后取气的取气方式,能够有效地减少空压机进气负压,更为合理;建议整车布置时能够从空压机取气位置方面进行优化设计,从而优化提升空压机性能,减少空压机随气排油量,延长空压机的使用寿命,减少用户的抱怨。 相似文献
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This communication presents the periodic heat transfer analysis for solar space heating of an unconditioned building with an integrated roof air heater. The system consists of an air duct within the roof such that the air is continuously or intermittently forced to circulate the cooler room air through the inlet of the air duct. Time dependence of the air flow is represented by a step function of time for daily operation and, hence, has been expressed as a Fourier series in time. The analysis takes into account air ventilation, ground heat conduction and furnishings. The effects of depth of the air duct from the outer surface of the roof and the magnitude and duration of air flow rate on indoor air temperature have been studied for a typical cold winter day in Delhi. It is seen that a time dependent air flow through the duct is desirable from the point of view of increasing the indoor air temperature in the case of a bare roof. However, in the case of a blackened and glazed roof, continuous air flow is needed for increasing the room air temperature. The results are desirable from the point of view of efficient space heating of solar passive buildings. 相似文献
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归纳近年来低温送风系统研究中的关键问题。指出低温送风系统研究中送风温度、送风末端选择、热舒适性评价及其经济性评价研究的主要进展,总结低温送风系统送风温度、送风末端选择的现状和问题,并分析送风温度及末端送风方式的选择对低温送风系统的经济性的影响,总结低温送风系统热舒适性方面的主要研究方法和研究成果。在此基础上,对低温送风系统的研究前景进行展望。 相似文献
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吴泾热电厂2×300MW级燃煤供热机组脱硝设备,采用低NOx燃烧加选择性催化还原法(SCR)脱硝系统。介绍了SCR的化学反应机理、反应器安装位置、分段配风燃烧技术,分析了低NOx燃烧工况和运行参数,结果证实了:对分段配风的低NOx燃烧器来说,有效控制主燃烧区的风量,在总风量不变的条件下,加大可水平摆动的分离燃烧器(SOFA)配风量和加大SOFA配风距离是有效降低NOx的生成、减轻SCR的负载、降低耗NH3的有效方式;当燃用低值煤和可磨性差煤,使相对一次风量增加时,应降低二次风的配风量,用一次风总量自动实时修正二次风的配风量是实现自动低NOx燃烧调整的有效途径;适当降低二次风与炉膛的差压是防止二次风配风不均和控制主燃烧区风量的有效方法。 相似文献
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In this paper, we present the theory of a non-porous air heater in which the air is blown both below and above the absorbing surface. Explicit expressions for the outlet air temperature and useful heat flux have been obtained in terms of mass flow rate of the air, distance along the direction of air flow and other relevant parameters. The double-flow air heater is found to perform more efficiently than a single-flow air heater. 相似文献