CAJ | 학술논문

对采用两段式喷嘴引射器的两相流引射制冷系统进行了实验研究，并将两段式喷嘴的引射比及其系统COP分别与拉法尔喷嘴引射器的引射比及其系统COP进行了比较。实验结果表明：在冷凝/蒸发温度为45℃/1℃工况下，使用不同几何尺寸两段式喷嘴引射器的引射比均大于拉法尔喷嘴引射器的引射比，最大提高了约18％；使用两段式喷嘴引射器的制冷系统COP大于使用拉法尔喷嘴引射器的制冷系统COP，最大提高了约12％；在蒸发温度为1℃条件下，两段式喷嘴引射器及拉法尔喷嘴引射器的引射比均在冷凝温度为45℃时达到最大值，而在冷凝温度为50℃条件下，两种引射器的引射比均在蒸发温度为3℃时达到最大值。
대채용량단식분취인사기적량상류인사제랭계통진행료실험연구，병장량단식분취적인사비급기계통COP분별여랍법이분취인사기적인사비급기계통COP진행료비교。실험결과표명：재냉응/증발온도위45℃/1℃공황하，사용불동궤하척촌량단식분취인사기적인사비균대우랍법이분취인사기적인사비，최대제고료약18％；사용량단식분취인사기적제랭계통COP대우사용랍법이분취인사기적제랭계통COP，최대제고료약12％；재증발온도위1℃조건하，량단식분취인사기급랍법이분취인사기적인사비균재냉응온도위45℃시체도최대치，이재냉응온도위50℃조건하，량충인사기적인사비균재증발온도위3℃시체도최대치。
The two-phase ejector refrigeration cycle ( TPERC) system with a dual-serial-throat nozzle ejector was investigated experimen-tally,and the entrainment ratio of the ejector and the COP of the system were compared with those of the ejector with Laval nozzle and the TPERC system respectively. The experimental results indicate that the entrainment ratios of the dual-serial-throat nozzle ejectors with dif-ferent geometric size are greater than those of the Laval nozzle ejectors under the working condition of the evaporating/condensing tempera-tures 1 ℃/45 ℃,the maximum increment of the entrainment ratio is about 18%; and the COP of the TPERC system with dual-serial-throat nozzle ejector is greater than that of the TPERC system with Laval nozzle ejector,the maximum increment of the COP is about 12%. Under the condition of the fixed evaporating temperature 1 ℃,the entrainment ratios of both the dual-serial-throat nozzle ejector and the Laval nozzle ejector achieve the maximum values as the condensing temperature is about 45 ℃. Under the condition of the fixed conden-sing temperature 50℃,the entrainment ratios of the two types of ejectors achieve the maximum values as the evaporating temperature is a-bout 3 ℃.