摘要
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。
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.
出处
《制冷空调与电力机械》
2003年第5期7-9,13,共4页
Refrigeration Air Conditioning & Electric Power Machinery
关键词
陈列柜
热负荷
焓差
热平衡
风幕
display cases
heat load
enthalpy difference
