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现行 AN-92-03-2
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The Effect of Regenerator Performance on a Liquid-Desiccant Air Conditioner 回热器性能对液体除湿空调的影响
LiCl液体干燥剂空调的性能由以下四种类型的再生器模拟:(1)风干填充床装置,(2)简单锅炉,(3)多效锅炉,(4)发动机驱动的蒸汽压缩蒸馏装置。简单的锅炉有两种配置——一种是蒸汽直接排放到室外环境,另一种是锅炉在亚大气压下运行,一个风冷式热交换器冷凝蒸汽。 对于所有系统,吸收器都是逆流填充床装置。在喷洒到填充床上之前,干燥剂在67%有效冷却器中冷却。在室内和室外条件下,在吸收器内设置浓度,以便在400 cfm/吨(53.6 L/s.kW)下提供冷却,再生器产生以下性能系数(COP)-(1)填充床,在150华氏度(66摄氏度)和240华氏度(116摄氏度)的干燥剂喷雾温度下,0.57和0.69,(2)简单锅炉,0。 对于在212华氏度(100摄氏度)、120华氏度(49摄氏度)和100华氏度(38摄氏度)下离开锅炉的蒸汽饱和温度,分别为67.0.79和0.82;(3)多效锅炉,对于在120华氏度(49摄氏度)低压蒸汽饱和温度下运行的双效和三效机组,分别为1.36和1.89;(4)蒸汽压缩蒸馏,2.4。关键词:性能、热交换器、干燥剂、单元空调、计算、锅炉、吸收剂、性能系数测定: ASHRAE Trans。1992年,第98卷,第1部分,论文编号AN-92-3-2704-711,图7。,1表。,参考文献3。
The performance of a LiCl liquid-desiccant air conditioner was modelled with the following four types of regenerators - (1) air-dried, packed-bed units, (2) simple boilers, (3) multiple-effect boilers, and (4) engine-driven, vapour-compression distillation units. The simple boiler was modelled in two configurations - one in which steam is vented directly to the outdoor ambient, and the other in which the boiler operates at subatmospheric pressure and an air-cooled heat exchanger condenses the steam. For all systems, the absorber was a counterflow packed-bed unit. Before being sprayed onto the packed bed, the desiccant was cooled in a 67% effective cooler. At ARI indoor and outdoor conditions, and with the concentration set within the absorber so that cooling was provided at 400 cfm/ton (53.6 L/s.kW), the regenerators produced the following coefficients of performance (COPs) - (1) packed bed, 0.57 and 0.69 at 150 deg F (66 deg C) and 240 deg F (116 deg C) desiccant spray temperatures, (2) simple boiler, 0.67. 0.79, and 0.82 for steam saturation temperatures leaving the boiler at 212 deg F (100 deg C), 120 deg F (49 deg C), and 100 deg F (38 deg C), (3) multiple-effect boiler, 1.36 and 1.89 for double-effect and triple effect units operating with a 120 deg F (49 deg C) low-pressure steam saturation temperature, and (4) vapour-compression distillation, 2.4.KEYWORDS: performance, heat exchangers, desiccants, unit air conditioners, calculating, boilers, absorbents, coefficient of performance
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