确定陈列柜热负荷新方法的研究

以陈列柜为研究对象，在对其柜内空气进行热平衡分析的基础上，提出了利用风幕进出口的焓差确定陈列柜热负荷的方法。与传统的方法相比，这种方法需要给定的已知参数相对较少、应用方便，而且可以不通过实验获取已知参数，对新设计的陈列柜的热负荷可进行预测。通过与实验值的比较可以看出，这种方法具有实际的可行性和应用价值。

Research on a New Method of Calculating Heat Load of Display Cases

In this paper, a new method of calculating the heat load of display cases was put forward based on the heat balance analysis of the air in it. In this method, the enthalpy difference between the inlet and outlet of the air curtain was used. Compared to old methods, less parameters are needed and it can be applied expediently. Since the necessary parameters can be gotten without experiments, the heat load of a display case in design can be predicted by this new method. The contrast between the result from this method and that from experiments shows that this new method is practical and valuable.