Numerical simulation of the influence of a internally suction type air curtain to refrigerated truck’s heat preservation performance

Abstract

Abstract. Refrigerated truck as the research object, using the CFD numerical simulation software simulate the dynamic temperature field of refrigerated truck with a internally suction type air curtain, it emphatically analyzes the influence of the export velocity of the internally suction type air curtain to the refrigerated truck's heat preservation performance when door is opened. The results show that the suitable export velocity of the air curtain can improve the insulation performance of the refrigerated truck, but when the export velocity is too large, the opening of the air curtain not only can not improve the heat preservation performance of refrigerated truck, but aggravate the heat and mass exchange between inside cold air and outside hot air. From the perspective of energy saving, researching the best export velocity of air curtain to insure that refrigerated truck has the best heat preservation performance, which will has great significance to the refrigerated truck's energy-saving design.