摘要
采用3种不同的计算方法对多温区冷藏车热负荷进行计算,以寻求冷藏车负荷计算的合适方式。3种方法计算得到的热负荷分别为3764.34,4199.54,4044.87W,其中开门热负荷占到总热负荷的1/3以上,若再加上通过隔热厢体传入的热量,则这两部分热量占了总热量的近80%,由此认为由车厢外表面面积、传热系数、内外温差及开门次数系数的乘积计算热负荷的经验公式有一定的合理性。
In this paper, three different methods were selected to calculate the heat load of the multi-temperature refrigeration trucks and tried to find a good way to get the heat load of the truck. According to the three methods, the heat capacity was 3 764.34 W,4 199.54 W,4 044.87 W respectively, in which the heat by the door open was about one third of the total heat. The heat from the door open and structure of the truck was about 80% of the total heat. So it was reasonable to use a experimental and simple formula which included the surface area, heat transfer coefficient, temperature difference and factor of door opening.
出处
《食品与机械》
CSCD
北大核心
2007年第4期98-101,共4页
Food and Machinery
基金
上海市科委2005年度"食品安全检测
控制关键技术"重大科技攻关项目(项目编号:05DZ19102)
上海市教委重点学科资助(项目编号:T1102)
关键词
冷藏车
多温区
热负荷计算
标准
Refrigeration truck
Multi-temperature
Heat load calculating
Standard
