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在运用过程中,冷藏车的热物理性能会发生很大的变化,在许多情况下这种变化是破坏运输温度工况的原因。有些车辆在厂修后2～3年其传热系数就超过计算值。在车体隔热结构中,隔热层所发生的典型缺陷是隔热料的沉陷。冷藏车现有的热工检测方法是相当复杂和费时的,这就很难在车辆段和修理工厂中进行大量的车辆检测。因此在运用中有很大数量的车辆不符合规定的热工性能要求。全苏铁道运输科学研究院乌拉尔分院研
In the course of its application, the thermophysical properties of refrigerated trucks vary widely and in many cases this change is the cause of damage to transport temperature conditions. Some vehicles in the factory repair 2 to 3 years after the heat transfer coefficient exceeds the calculated value. In the car body insulation structure, the typical defect that occurs in the insulation layer is the sinking of the insulation material. Existing methods of thermal inspection of refrigerated trucks are quite complex and time consuming, making it difficult to carry out extensive vehicle inspections at depots and repair shops. Therefore, a large number of vehicles in use do not meet the required thermal performance requirements. All Su Railway Transport Research Institute Ural Branch research