CAJ | 학술논문

板式蒸发式冷凝器是在蒸发式冷凝器和板式换热器的基础上发展起来的,兼有两者的优势.文中提出了一种用于计算蒸发式冷凝器气-液界面的温度和蒸发量的简化算法,进而对影响蒸发式冷凝器性能的参数进行了分析.结果显示,高的空气流速导致低的界面温度和高的蒸发量,强化了换热效果,并得到了空气通道内温度和含湿量的分布曲面;当相对湿度保持不变而增大空气温度时,蒸发量随之下降,与此同时界面温度线性上升.
판식증발식냉응기시재증발식냉응기화판식환열기적기출상발전기래적,겸유량자적우세.문중제출료일충용우계산증발식냉응기기-액계면적온도화증발량적간화산법,진이대영향증발식냉응기성능적삼수진행료분석.결과현시,고적공기류속도치저적계면온도화고적증발량,강화료환열효과,병득도료공기통도내온도화함습량적분포곡면;당상대습도보지불변이증대공기온도시,증발량수지하강,여차동시계면온도선성상승.
Plate evaporative condensers were developed on the base of evaporative condenser and plate heat exchanger, and had the benefits of both of them. In this paper, a simplified model was developed to calculate the temperature and evaporation characteristics at the water-air interface, and then the primary influence factors of plate evaporative condenser were analyzed. The results show that a smaller interfacial temperature and a higher evaporated mass flux can result for a higher air velocity which enhanced the heat transfer. When the relative humidity kept constant and air temperature increased, the evaporation decreased thereupon while the interfacial temperature increased linearly.