Experimental study on automotive cooling and heating air conditioning system using CO2 as a refrigerant
Experimental study on automotive cooling and heating air conditioning system using CO2 as a refrigerant
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DOI：
10.1016/j.ijrefrig.2005.09.010
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发表时间：
2004-08
期刊：
影响因子：
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通讯作者：
T. Tamura;Y. Yakumaru;F. Nishiwaki
中科院分区：
文献类型：
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作者：
T. Tamura;Y. Yakumaru;F. Nishiwaki
近年来，作为应对全球气候变暖和节能减排问题的对策之一，CO2等天然制冷剂作为HFCs的替代品在汽车空调系统中的应用越来越受到关注。另外，近年来，由于环保车的发动机的放热减少，所以存在现有的汽车加热空调系统不能提供足够的加热能力的问题。作为替代方法，我们专注于利用基于CO2的热泵的解决方案，由此在进入空气的除湿期间（称为除湿条件）来自热泵循环的废热被回收并用作辅助热源而不是电加热器。基于这一理念，我们的目标是开发一个有效的汽车冷却和加热空调系统使用CO2作为制冷剂。在此基础上，成功开发了中型汽车CO2制冷制热空调系统样机。利用该系统，可以实现优于现有HFC 134 a系统的性能的性能上级。
Recently, as one of the countermeasures against the global warming and energy conservation problems, natural refrigerants such as CO2are now paid attention as substitutes for HFCs in automotive air conditioning systems. Also, in recent years because the heat release from the eco-car's engine decreases, there is a problem that the present automotive heating air conditioning system cannot provide sufficient heating capacity. As an alternative approach, we focused on a solution utilizing a CO2-based heat pump, whereby the waste heat from the heat pump cycle during dehumidification of the incoming air (referred to as the dehumidifying condition) is recovered and used as an auxiliary heat source instead of an electric heater. Based on this concept, we aimed to develop an effective automotive cooling and heating air conditioning system using CO2as a refrigerant. As the result, a prototype CO2automotive cooling and heating air conditioning system for medium-sized cars was successfully developed. With this system, performance superior to that of the present HFC134a system can be achieved.