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一、前言随着制冷技术的不断发展,采用各种不同制冷方式的铁路冷藏车也得到了相应的发展。目前,世界上约有各种铁路冷藏车二十万辆左右,其中以机械制冷的冷藏车占有较大比重。早在七十年代,美国就拥有铁路冷藏车四万多辆,其中机械冷藏车约占63％;苏联现有铁路冷藏车约六万辆,机械冷藏车占67％以上。我国幅员辽阔、物产丰富,每年需要通过铁路运输的易腐货物约有近千万吨,现有铁路冷藏车只有4200多辆,仅能完成20％的运量,冷藏车不但数量少,质量差,而且管理工作极
I. Introduction With the continuous development of refrigeration technology, the use of a variety of different ways of refrigerated refrigerated trucks have also been the corresponding development. At present, there are about 200,000 refrigerated trucks in the world, of which refrigerated trucks with mechanical refrigeration account for a large proportion. As early as the seventies, the United States owned more than 40,000 rail refrigerated trucks, of which about 63% were refrigerated trucks. The Soviet Union now has about 60,000 refrigerated trucks and over 67% refrigerated trucks. Our country is vast in size and rich in natural resources. There are nearly 10 million tons of perishable goods that need to be transported by rail each year. The existing railway refrigerated trucks have only 4,200 units, which can only accomplish 20% of the capacity. And management of the very work