新型干式工业空调系统的研究

发布时间：2018-05-08 02:39

  本文选题：高温热泵 + 标准焓差室　； 参考：《天津大学》2014年博士论文

【摘要】：整合硅胶转轮的空气净化作用及热泵的高效集热并转移热量的优势，本研究以研制能提供较高冷凝风温的空气源热泵技术为核心，提出自我再生的转轮除湿与高温热泵联合空调系统，高温热泵将为转轮提供全部的再生能源，有效地解决转轮再生能源的来源、品质和耗量，同时承担系统的空调冷负荷，在系统内部实现冷热量的抵减，完成系统的自我再生及除湿冷却，达到节能的目的。为转轮除湿空调系统的推广运用提供依据。 热泵的研制包括工质优选、部件优化及每一步改进后的性能测试。经过物性计算和工质比选，确定适宜在高温区间运行的R142b作为工质。经过毛细管的比选、加大冷凝器的换热面积等一系列改进措施优化系统部件。借助于标准焓差室模拟空气状态的功能，将每一项改进后的热泵置于焓差室中测试其运行参数及性能。最终当热泵蒸发器处于模拟转轮处理空气出口状态（温度为40℃、45℃、50℃）时，冷凝出风温度最高达79.96℃，完全能满足硅胶转轮的再生要求，压缩机的排气压力仍在合理的运行范围内，，压缩比在4.5～5.5之间。实验验证了热泵在联合系统中运行的匹配性。 建立了硅胶转轮吸湿时热量、水分的一维传热传质数学模型；建立了系统仿真的部件模型和整机模型；利用MATLAB的科学计算功能编制各部件及整机计算程序，计算联合系统的运行参数及系统能耗，所得模拟值与实验结果吻合较好，满足系统研究的精度要求。通过模拟计算和分析，可以获得联合系统随室内外空气状态变化的适应性运行和系统性能。在名义工况下，将联合系统与目前常规再热系统进行比较，除了对空气的净化过滤的强势之外，显著的优势在于温度和湿度的分别控制使系统具有明显的节能效应，在名义工况下比常规系统节能35.1％，能效比提高38.1％。并随着系统湿负荷的增加，节能效应将进一步提高。
[Abstract]:Integrating the air purification function of silica gel runner and the advantage of high efficiency heat collection and heat transfer of heat pump, this study focuses on the development of air source heat pump technology which can provide high condensing air temperature. The self-regenerated rotary wheel dehumidification and high temperature heat pump combined air conditioning system is put forward. The high temperature heat pump will provide all the renewable energy for the runner, effectively solve the source, quality and consumption of the rotary wheel renewable energy, and bear the cooling load of the air conditioning system at the same time. In the system, the cooling heat is offset, the self-regeneration and dehumidification cooling are completed, and the purpose of energy saving is achieved. It provides the basis for the popularization and application of rotary dehumidification air conditioning system. The development of heat pump includes working fluid selection, component optimization and performance test after each step improvement. Through physical property calculation and working fluid selection, R142b, which is suitable for operation in high temperature range, is determined as working fluid. A series of improved measures such as increasing the heat transfer area of the condenser and optimizing the system components were carried out by comparing and selecting the capillary. With the aid of the function of simulating the air state in the standard enthalpy difference chamber, each improved heat pump is placed in the enthalpy difference chamber to test its operation parameters and performance. In the end, when the heat pump evaporator is in the state of air outlet of simulated runner treatment (the temperature is 40 鈩

本文编号：1859622