论文部分内容阅读
四、车辆运用的特殊条件外温超过计算温度以及一台动力设备退出工作,均属于车辆运用的特殊条件。众所周知,设备功率是这样计算确定的:夏季外温+30～+40℃时,货物间内温度能维持-10～-20℃;冬季外温-45℃时,货物间内温度能维持+6～+14℃。同时,制冷设备在外温超过计算温度5～10℃时仍能保持其工作能力。实际上,机冷车运用中经常出现一台制冷设备或柴油发电机组(例如单节机冷车)不工作的情况。在这种情况下,如果不能由一台设备维持货物间的温度工况或车辆不能继续运用时,必须将车内货物倒装。在两种情况下,问题的求解在于比较热流和设备的产冷量。
Fourth, the special conditions for the use of vehicles External temperature exceeds the calculated temperature and a power plant to exit the work, are the special conditions for the use of vehicles. As we all know, equipment power is calculated and determined: the summer outside temperature +30 ~ +40 ℃, the inter-goods temperature can maintain -10 ~ -20 ℃; winter outside temperature -45 ℃, the inter-cargo temperature can maintain +6 ~ + 14 ℃. At the same time, refrigeration equipment in the external temperature exceeds the calculated temperature of 5 ~ 10 ℃ can still maintain its ability to work. In fact, it is often the case that a refrigeration unit or a diesel generator unit (eg a single cold unit) does not work in the use of a chiller. In this case, if the equipment can not maintain the temperature conditions between the goods or the vehicle can not continue to use, you must flip the goods inside the car. In both cases, the solution to the problem is to compare the heat flow and the equipment’s cooling capacity.