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21. 发明授权

US5309736A Hydrocarbon fluid, ejector refrigeration system 失效
标题翻译：烃类液体，喷射器制冷系统
公开(公告)号：US5309736A
公开(公告)日：1994-05-10
申请号：US111653
申请日：1993-08-25
申请人： Gregory J. Kowalski , Arthur R. Foster
发明人： Gregory J. Kowalski , Arthur R. Foster
IPC分类号： B60H1/32 , F25B1/08 , F25B27/02 , F25B45/00 , F25B1/06
CPC分类号： F25B45/00 , F25B1/08 , F25B27/02 , B60H2001/3295 , B60H2001/3298 , F25B2400/16 , F25B2500/01
摘要： A refrigeration system particularly suitable for an automobile air conditioning system is disclosed. The system includes an ejector to raise the pressure of the working fluid to the condenser pressure and a boiler which utilizes waste heat from the automobile engine. The boiler produces a near sonic velocity saturated vapor for input to the primary nozzle of the ejector. The near sonic velocity input maximizes the stagnation temperature and pressure of the fluid entering the primary nozzle for a given low or limited temperature heat source such as automobile waste heat. The refrigeration system uses a working fluid having a property such that its entropy when in a saturated vapor state decreases as pressure decreases, which maximizes the input pressure for a given heat source and prevents the vapor from condensing in the ejector. A high efficiency primary nozzle is also provided, allowing the system to take advantage of the decreasing entropy property of the saturated vapor. A refrigerant storage subsystem may be included in the system to provide an adequate transient response to changes in the waste heat output from the automobile engine and during the engine warm up period.
摘要翻译：公开了一种特别适用于汽车空调系统的制冷系统。该系统包括用于将工作流体的压力提高到冷凝器压力的喷射器和使用来自汽车发动机的废热的锅炉。锅炉产生接近声速的饱和蒸汽，用于输入到喷射器的主喷嘴。近声波速度输入可以使给定低温或有限温度热源（如汽车废热）进入主喷嘴的流体的停滞温度和压力最大化。制冷系统使用具有这样的性能的工作流体，使得当饱和蒸汽状态下的熵随着压力降低而降低，这使给定热源的输入压力最大化并防止蒸汽在喷射器中冷凝。还提供了高效率的主喷嘴，使得系统能够利用饱和蒸气的降低的熵特性。系统中可以包括制冷剂储存子系统，以便为汽车发动机的废热输出和发动机预热期间的变化提供足够的瞬态响应。

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