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为了提高飞机地面空调保障的保障效率,节省保障时间,对蒸发器的几种典型翅片的强化换热效果进行了研究,以确定不同种类翅片换热系数的大小,分析各种翅片的强化换热效果强弱。为此,选取了平直形、开缝形、三角形波纹形和正弦波波纹形等4种典型形式的换热器翅片,建立了4种翅片下的换热系数计算模型,利用Sim ulink仿真工具建立了用于换热系数计算的数学模型,并进行了仿真计算与分析。研究结果表明:与其它3种形式的换热器翅片相比,采用平直形翅片的飞机地面空调车蒸发器具有更高的换热系数,在蒸发器换热面积相同时,能够产生更好的制冷换热效果,进而节约航空兵部队和空军场站的飞行保障时间,提高飞行保障效率。
In order to improve the protection efficiency of aircraft ground air-conditioning and save the guarantee time, several typical fin heat-exchange effects of the evaporator were studied in order to determine the size of the heat transfer coefficient of different types of fins, Strengthen the effect of heat exchange. For this reason, four kinds of typical heat exchanger fins, such as flat shape, slit shape, triangular wave shape and sine wave shape, were selected and the heat transfer coefficient calculation model under four kinds of fins was established. Sim ulink The simulation tool establishes the mathematical model for calculating the heat transfer coefficient, and carries on the simulation calculation and the analysis. The results show that, compared with the other three types of heat exchanger fins, flat-type finned aircraft surface air-conditioned vehicle evaporator has a higher heat transfer coefficient, which can be generated when the heat transfer area of the evaporator is the same Better cooling and heat exchange effect, thereby saving the aviation security forces and air force station flight support time and improve flight security efficiency.