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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Experimental studies of a steam jet refrigeration cycle: Effect of the primary nozzle geometries to system performance
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Experimental studies of a steam jet refrigeration cycle: Effect of the primary nozzle geometries to system performance

机译：蒸汽喷射制冷循环的实验研究：主喷嘴几何形状对系统性能的影响

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摘要

This paper describes an experimental investigation of a steam jet refrigeration. A 1. kW cooling capacity experimental refrigerator was constructed and tested. The system was tested with various operating temperatures and various primary nozzles. The boiler saturation temperature ranked from 110 to 150°C. The evaporator temperature was fixed at 7.5°C. Eight primary nozzles with difference geometries were used. Six nozzles have throat diameters ranked from 1.4 to 2.6. mm with exit Mach number of 4.0. Two remained nozzles have equal throat diameter of 1.4. mm but difference exit Mach number, 3.0 and 5.5. The experimental results show that the geometry of the primary nozzle has strong effects to the ejector performance and therefore the system COP.
机译：本文介绍了蒸汽喷射制冷的实验研究。建造并测试了一个1. kW制冷量的实验冰箱。该系统已在各种工作温度和各种主喷嘴下进行了测试。锅炉饱和温度为110至150°C。蒸发器温度固定在7.5℃。使用八个具有不同几何形状的主喷嘴。六个喷嘴的喉管直径为1.4至2.6。出口马赫数为4.0的毫米。剩下的两个喷嘴的喉部直径相等，为1.4。毫米，但出口马赫数相差3.0和5.5。实验结果表明，主喷嘴的几何形状对喷射器性能以及系统COP有很大影响。

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