Sep 23, 2022 Leave a message

Today We Will Show You How Long The Parking Air Conditioner Can Last?

Stop listening to the outside world, today we will show you how long the parking air conditioner can last?


Truck drivers who have installed parking air conditioners often talk about the usage time of their truck parking air conditioners when chatting together. Those who don’t have parking air conditioners but want to install one always are thinking about how long can it be used continuously.

mini air conditioner for semi truck

So what factors are related to the usage time of parking air conditioners? How can we calculate the usage time based on experience?


Factors Affecting the Use Time of Parking Air Conditioning


01. Battery power


The amount of electricity that our car battery can store directly determines how long the parking air conditioner can be used. A group of 150AH batteries and a group of 330AH batteries have more than double the power stored, and the use time will also be doubled.


The formula for calculating the stored power of the battery is: 24V*150AH=3600WH=3.6KW*H, which means that a 150A-hour battery pack can store 3.6 kWh of electricity.

electric ac units for trucks


02. Parking air conditioner power


I am referring to the input power of the parking air conditioner. Driver friends must not confuse the input power with the cooling capacity. The input power is generally in the range of 700-1200W, and the cooling capacity is in the range of 2000-2800W. The difference between the two is more than 2 times.


The power of the parking air conditioners installed by truck driver friends varies according to their brands and models. Generally speaking (take the split type parking air conditioner as an example), three powers will be marked on the parking air conditioner, namely the compressor power, the condensing fan power, and the evaporation box power. The sum of these three is the parking air conditioner power. 

portable air conditioner truck cab


03. External environment


The use of parking air conditioners is the same as that of household air conditioners. The higher the external ambient temperature, the worse the condensation effect of the refrigerant, and the more electricity the parking air conditioner consumes.


The inverter air conditioner can control the power of the compressor and the condensing fan according to the temperature difference between the inside and outside of the cab, so as to achieve the purpose of saving electricity and prolonging the use time. The real frequency conversion on the market is about 20% longer than the fixed frequency.

12v truck sleeper air conditioner

Having said so much, how to calculate the usage time of the parking air conditioner?


Taking the JUKOOL parking air conditioner as an example, its electrical parameters indicate that the rated input voltage is 24V, the rated input current is 30A, and its rated input power is 24V*30A=720W. Assuming that the battery has a capacity of 180AH and has been used for 2 years, the engine can be started in order to ensure the remaining power.


Then this group of batteries can release up to 180AH*24V*(1-2*18%-25%)=1684.8WH. In the formula, 18% is the annual loss of the battery, and 25% is the power required to ensure the normal start of the engine.


1684.8WH/720W=2.34H, because the JUKOOL parking air conditioner is an inverter air conditioner, the actual use time is about 2.34*1.2=2.808H. A set of 180AH batteries that have been used for two years can be used for about 2.8 hours during the day with the JUKOOL parking air conditioner. 2 sets of batteries can reach 5 to 6 hours during the day, and can run continuously for more than 10 hours at night.


Due to the slightly lower temperature at night, the condensing effect of the condenser is better, and the frequency conversion effect of the parking air conditioner will greatly prolong the nighttime use.

12 volt air conditioner for semi trucks

Do you like our share? You will find more information through the JUKOOL website!

https://www.auto-airconditioners.com/

or consult and purchase by mail or whatsapp if you have some needs

Mail:jing.yuan@futruntech.com

Wechat/Whatsapp: +86 159 5045 8518


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