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首页> 外文期刊>International journal of air-conditioning and refrigeration >Experimental Evaluation of Window-Type Air-Conditioning Unit with New Expansion Device and R404A Alternative Refrigerant
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Experimental Evaluation of Window-Type Air-Conditioning Unit with New Expansion Device and R404A Alternative Refrigerant

机译：具有新扩展装置和R404A替代制冷剂窗式空调单元的实验评价

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摘要

In this study, the performance of a window-type air-conditioning unit with an alternative, ozone-friendly refrigerant was enhanced by incorporating a nozzle instead of a capillary tube as an expansion device. An experimental evaluation was adopted on a 1.5 RT window-type air-conditioning unit with a controlled environmental zone. According to operating conditions, an ANSYS-Fluent program was used to predict an appropriate nozzle size for a lower pressure ratio. The refrigeration cycle model was simulated using the Engineering Equation Solver (EES).~(27) The results showed that using a nozzle of 30 mm length and inner and outer diameters of 9 and 2 mm, respectively instead of the capillary tube with R404A reduces compressor power consumption by 7.7% and increases the coefficient of performance (COP) by 7.4%.
机译：在该研究中，通过将喷嘴代替毛细管作为膨胀装置，通过替代地具有替代的臭氧友好的制冷剂的窗式空调单元的性能。 1.5 RT窗式空调单元采用实验评估，采用受控环境区。 根据操作条件，使用ANSYS-FLUENT程序来预测较低的压力比的适当喷嘴尺寸。 使用工程方程求解器（EES）模拟制冷循环模型。〜（27）结果表明，使用30mm长度和内径为9和2mm的内径，而不是具有R404a的毛细管的喷嘴减少了 压缩机功耗按7.7％，使性能系数（COP）增加7.4％。

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