CAJ | 학술논문

本文针对重型卡车发动机冷却液余热工况，采用R245fa作为循环工质建立了朗肯-朗肯制冷系统，剖析了此系统的基本原理和结构特点，根据系统分析建立了数学模型，模拟分析了发生温度、冷凝温度、蒸发温度对系统性能的影响。结果表明：在发生温度85℃、冷凝温度50℃、蒸发温度5℃时，系统COP达到0.254，虽然此系统的效率要低于相同工况下的吸收制冷循环，但是朗肯-朗肯制冷系统相对于吸收制冷系统具有尺寸小、易于控制和快速响应等优点，利用朗肯-朗肯循环回收重型卡车发动机冷却液余热迚行制冷是可行的。
본문침대중형잡차발동궤냉각액여열공황，채용R245fa작위순배공질건립료랑긍-랑긍제랭계통，부석료차계통적기본원리화결구특점，근거계통분석건립료수학모형，모의분석료발생온도、냉응온도、증발온도대계통성능적영향。결과표명：재발생온도85℃、냉응온도50℃、증발온도5℃시，계통COP체도0.254，수연차계통적효솔요저우상동공황하적흡수제랭순배，단시랑긍-랑긍제랭계통상대우흡수제랭계통구유척촌소、역우공제화쾌속향응등우점，이용랑긍-랑긍순배회수중형잡차발동궤냉각액여열중행제랭시가행적。
The paper established a Rankine-Rankine refrigeration cycle system driven by heavy truck engine coolant waste heat, which uses R245fa as working medium. The basic principle and structural characteristics of the system are analyzed. According to the system analysis, the mathematical model is established. The effects of generating temperature, condensation temperature and evaporation temperature on the system performance are investigated. The COP reaches 0.254, when the generating temperature is 85oC, the condensation temperature is 50oC and the evaporation temperature is 5oC. The Rankine-Rankine refrigeration cycle system has the advantages of small size, easy to control and fast response, although the COP is lower than that of the absorption refrigeration under the same condition. We can believe that Rankine-Rankine refrigeration cycle system is feasible to recovery engine coolant waste heat.