、制冷机可以将货物的温度降低到制冷机的打温最低限。 1. The refrigerator can reduce the temperature of the cargo to the minimum temperature of the refrigerator.
The role of the box is to keep heat, and the role of the refrigerator is to ensure that the temperature of the goods in the box does not change, and the temperature of the goods cannot be reduced. For example, some customers who pull meat, put the cut meat of the animal that has just been slaughtered directly into the box, and the temperature of the refrigerator cannot be beaten. 1000 倍。 The refrigerator can easily knock down the temperature of the air, but it is difficult to knock down the temperature of the cargo, because the specific heat value of the cargo is nearly 1000 times that of air .
、温度低的货物难打，温度高的货物容易降温 ? 2. It is difficult to hit the goods with low temperature, and it is easy to cool the goods with high temperature ?
-18 度，这个温度就容易打。 The ice cream temperature is controlled at -18 degrees, which is easy to beat. On the contrary, Mengniu's probiotic milk, as well as fruits, vegetables, and yeast, it is difficult to hit the temperature of the items that produce heat by themselves. -4 度左右，益菌杯内的温度才可以控制在 4 度左右。 Mengniu's probiotic milk can only be controlled at about -4 degrees, and the temperature in the probiotic cup can be controlled at about 4 degrees. This is the case.
、货物越少，温度越好打 ? 3 , the less the goods, the better the temperature ?
: 错误。 Answer : wrong.
The less the cargo, the larger the volume of air in the box. This is one of the reasons why the temperature of Mengniu's probiotic milk is difficult to beat. 1) 半车货，空气的体积太大。 Reasons: 1) The volume of air is too large for half a car. 货物自身发酵产热。 2) The cargo itself produces heat.
、质量好的制冷机可以将箱体内打出雾气 ? 4.Can a good quality refrigerator blow mist out of the box ?
The main reason for the fog is that there is too much water in the cabinet or the refrigerator is not draining well, which is not a good phenomenon. You can judge it by looking at the thermometer. It can also be judged by the water outlet on the outside of the refrigerating cabinet. If the heating process continues, it is normal for water to flow out of the cabinet, otherwise the self-flow nozzle is blocked.
、制冷机放在太阳底下暴晒打温 ? 5.Is the refrigerator exposed to the sun ?
The higher the ambient temperature outside the cabinet, the worse the cooling effect. 1) 制冷机长时间暴晒在太阳底下。 For example, 1) The refrigerator is exposed to the sun for a long time. 夏天高温 40 度的短暂天气，对制冷机的考验是十分严峻的，制冷会出现很多问题。 2) The short-term weather with a high temperature of 40 degrees in summer is a severe test for refrigerators, and many problems will occur in refrigeration.
、制冷机显示器上的温度达不到货物要求的温度，制冷机就在起负作用。 6 , the temperature on the display of the refrigerator can not reach the temperature required by the cargo, the refrigerator is playing a negative role.
-18 度，装箱，打开制冷机，显示温度 2-3 度，甚至 7-8 度，这是货箱内空气的温度。 The ice cream storage temperature is -18 ° C. Packing and opening the refrigerator shows the temperature of 2-3 ° C, or even 7-8 ° C. This is the temperature of the air in the cargo box. -18 度，也有制冷机达不到 -18 度，例如达到 -13 度，同样货物的质量也没有任何问题。 As the refrigeration continues, the temperature of the display also decreases. Some refrigerators can reach -18 degrees, and some refrigerators can not reach -18 degrees, such as -13 degrees. There is no problem with the quality of the goods.
、制冷机显示器温度在升高，证明货物的温度在升高。 7. The temperature of the refrigerator display is increasing, which proves that the temperature of the cargo is increasing.
The temperature of the display only represents the temperature of the air between the packages in the box, and does not represent the temperature of the goods. The specific heat value of the air is very low, which easily causes the temperature to rise, and does not mean that the temperature of the goods has increased.
、制冷机的制冷量越大越好。 8. The larger the cooling capacity of the refrigerator, the better.
The advantage of large cooling capacity is that the temperature of the box is fast, the pressure in the compressor system is reduced quickly, and the horsepower of the engine is less consumed. However, the disadvantage is that the power consumption of the battery is relatively large, and the battery often loses power and cannot catch fire, especially in diesel cars. The best principle for installing a refrigerator in a refrigerated truck is matching. It is not good to be large or small.
、国产 A 家的制冷机比进口 B 家的制冷机制冷量大 . 9.The refrigerators of the domestic A house have larger refrigeration capacity than the refrigerators of the imported B house .
There is no way to match the coolers of different sizes to the cooling capacity, not a level.
、 箱体的保温不重要，只要匹配个好冷机就可以了。 10. The insulation of the cabinet is not important, as long as it matches a good cooler.
-18 度的雪糕，没有制冷机的情况下， 20 小时质量没有问题。 Cheng Li's new craft box can guarantee ice cream at -18 degrees. In the absence of a refrigerator, there is no problem in quality for 20 hours. 20 小时，箱体内的货物也会出现不同程度的化货。 However, the refrigerating box of the color steel plate is continuously cooled for 20 hours, and the goods in the box will also have different degrees of chemical goods. The reason is that the thermal insulation box is the basic guarantee to ensure that the goods do not conduct heat, and the refrigerator is the reason to ensure that the air temperature in the box drops. The refrigerator can ensure that the temperature of the air drops, but it cannot guarantee that the heat of the cargo can be conducted outside through the box. Therefore, choosing a good box for a refrigerated truck is more important than choosing a good refrigerator.