【作者】 焦永刚；

【导师】 杨昭；

【作者基本信息】 天津大学 ， 制冷及低温工程， 2005， 硕士

【摘要】 当今世界正面临着能源日益枯竭的威胁,因此如何才能既保证人们生活的舒适性又能节约能源,对于空调这一耗能大户就显得格外重要。对于回收利用低温能源和工业废热,例如太阳能和低温蒸汽等等,溴化锂吸收式制冷机是一种有效的制冷系统。在本文中,为了充分回收利用工厂废气的热量,用于高压发生器的热源,设计了热管型高压发生器。热管元件工作于高温烟气和高压发生器的溴化锂溶液之间。并且对余热型吸收式制冷系统进行了仿真优化分析。为了进行余热溴化锂吸收式制冷系统的仿真计算和优化分析,开发了相应的计算程序。在程序的开发过程中,溴化锂溶液热物性不能利用查图和查表的方法得到,需要将溴化锂溶液热物性图表转化为计算机语言,以便于计算和使用。所以本文中建立了溴化锂溶液热物性的经验公式。另外,本文中对双效溴化锂吸收式制冷系统的串联、并联和逆串联流程进行了仿真计算,并且以最大热力系数和最大性能面积比为优化目标对双效溴化锂吸收式制冷系统的串联流程进行了优化分析。在设计和计算溴化锂吸收式制冷系统时,由于存在不同的系统流程,所涉及的参数很多,并且有很多不确定的因素,所以设计者往往要花费很多精力却做了不少重复工作。在本文中,通过自己编制的参数分析程序,研究了吸收式制冷系统中几个主要的参数对系统性能的影响。更多还原

【Abstract】 With the increasing world-wide energy shortage, the problem of energy-conservingand guaranteeing the comfort of people became more important for AIRCONDITIONING.―――one of big energy consumer.Lithium Bromide Absorption Refrigeration system is one of the more efficientmethod of refrigeration in using low potential energy and waste energy as terrestrialheat , solar energy and low temperature vapor , etc.The residual heat energy of the exhaust gas from heavy industry manufactory wasfound to be available energy for LiBr/H₂O absorption cooling system. For the sake ofdesigning a LiBr/H₂O absorption cooling system to reclaim residual energy, a modelwas designed to simulation the heat exchanging between the exhaust gas andLiBr/H₂O solution. Moreover, a simulation analysis was carried out for absorptioncooling system using waste gas through a newly developed simulation program.The method of optimize designing is studied and a universal software is provided.During the designing of the software, a lot of diagram about the property of LiBr/H₂Osolution was translated into the data file or function for the software to query, andmathematics model was established to get the parameter of the property of LiBr/H₂Osolution that cannot be found in the diagram. In additional, the software can optimizethe designing of the cooling system, make the cooling system has maximal coefficientof performance or the maximal COA for heat exchanging components.When design and calculate an Lithium Bromide Absorption Refrigeration system,because it exists various of devices and uncertain conditions, designers often doexcessive and repeated works with low efficiency. In this paper, using the analyticalprogramme of parameter, a simulation analysis was carried out for absorption coolingsystem, the analytical programme can analyse the influence between the parameterand the performance of the absorption cooling system.更多还原