1、混凝土攪拌罐車風口向上控制溫差
1. Control the temperature difference upward at the air outlet of concrete mixing tank truck
混凝土攪拌罐車空調溫度不要調得太低，風速不要太校自動恒溫空調一般車廂內外溫差不要超過10℃。非恒溫式空調，可先把冷氣溫度設在風速開到，等覺得冷時再把溫度調高一點，把風速降一擋，如還冷，再將溫度調高些，然后將風速降下來，反復這樣才是正確操作。當混凝土攪拌罐車外溫度達到30℃以上時，應把混凝土攪拌罐車內溫度控制到25℃左右。
The air conditioning temperature of concrete mixing tank truck shall not be adjusted too low, the wind speed shall not be too calibrated, and the temperature difference inside and outside the car shall not exceed 10 ℃. For non constant temperature air conditioning, set the temperature of the cold air at the wind speed first, and then increase the temperature when it feels cold, and reduce the wind speed by one gear. If it is still cold, increase the temperature, and then reduce the wind speed. Repeat this is the correct operation. When the temperature outside the concrete mixing tank truck reaches more than 30 ℃, the temperature inside the concrete mixing tank truck shall be controlled to about 25 ℃.
2、混凝土攪拌罐車到目的地先關空調
2. Turn off the air conditioner when the concrete mixing tank truck arrives at the destination
混凝土攪拌罐車在到達目的地前三五分鐘關掉空調，不僅可以降低油耗，更能避免空調產生異味。在混凝土攪拌罐車停車前幾分鐘關掉空調，同時適當加大風量，在混凝土攪拌罐車停車前使空調管道內的溫度回升，**可以減少冷凝水的產生而保持混凝土攪拌罐車空調系統的相對干燥，霉菌自然也沒有了生存的空間。
Turning off the air conditioner three or five minutes before the concrete mixing tank truck arrives at the destination can not only reduce the fuel consumption, but also avoid the peculiar smell of the air conditioner. Turn off the air conditioner a few minutes before the concrete mixing tank truck stops, and increase the air volume appropriately. Before the concrete mixing tank truck stops, make the temperature in the air conditioning pipe rise again, * * it can reduce the generation of condensate and keep the air conditioning system of the concrete mixing tank truck relatively dry, and the mold naturally has no living space.

你說的是汽車車內降溫劑吧？降溫劑實際上是干冰，瞬間蒸發后**是CO2，只要不是大量使用（CO2濃度太高對人體還是有害的），可以起到降溫作用。
Are you talking about car cooling agent? The cooling agent is actually dry ice. After instant evaporation * * is CO2. As long as it is not used in large quantities (CO2 concentration is too high or harmful to human body), it can play a cooling role.
3、先開混凝土攪拌罐車空調外循環
3. Start the external circulation of the air conditioner of the concrete mixing tank truck first
天熱了，烈日下混凝土攪拌罐車內溫度可能高達攝氏六七十度，這時上混凝土攪拌罐車前應先把車門、車窗打開，釋放積聚在車內的熱氣，且不要急于關上車窗，先打開混凝土攪拌罐車空調外循環，待車廂內外溫度相近時，關閉車窗，啟用內循環。待混凝土攪拌罐車內溫度達到正常舒適狀態時，立即關閉風門，達到快速降溫效果。
It's hot, and the temperature in the concrete mixing tank truck may be as high as 60 or 70 degrees Celsius in the hot sun. At this time, before getting on the concrete mixing tank truck, open the door and window to release the heat accumulated in the car. Don't be in a hurry to close the window. First open the external circulation of the air conditioner of the concrete mixing tank truck. When the temperature inside and outside the car is similar, close the window and start the internal circulation. When the temperature in the concrete mixing tank truck reaches the normal and comfortable state, close the air door immediately to achieve the effect of rapid cooling.
禰所說的“汽車降溫劑”那是指冷卻發動機溫度的，叫做“防凍液”是專門對發動機溫度進行冷卻的，對于汽車內部或者房子的室內沒用作用的。
The "automobile cooling agent" you mentioned refers to the one that cools the engine temperature. It is called "antifreeze", which is specially used to cool the engine temperature and has no effect on the interior of the car or the interior of the house.
4、混凝土攪拌罐車堵車時打開車窗
4. Open the window when the concrete mixing tank truck is in a traffic jam
長時間使用空調會使混凝土攪拌罐車冷凝器壓力過大，這不僅會對混凝土攪拌罐車制冷系統造成損耗，而且也會降低混凝土攪拌罐車空調的制冷效果。所以，在混凝土攪拌罐車內溫度已經讓您熱氣頓消的時候，不妨將空調關閉一會兒。
Using the air conditioner for a long time will cause excessive pressure in the condenser of the concrete mixing tank truck, which will not only cause loss to the refrigeration system of the concrete mixing tank truck, but also reduce the refrigeration effect of the air conditioner of the concrete mixing tank truck. Therefore, when the temperature in the concrete mixing tank truck has made your hot air disappear, you might as well turn off the air conditioner for a while.