What is the lifespan of the parking air conditioner
November 22, 2023 | Zemtra Blogs
Among friends who have installed parking air conditioners in there trucks, discussions often revolve around the operational duration of these systems. Those considering installation ponder the potential continuous working hours of these air conditioners.
To determine the operational time of parking air conditioners for trucks, it's crucial to understand the factors influencing their usage duration. How can we calculate the working time based on practical experience?
Battery storage capability
The duration for which the parking air conditioner can be utilized is directly contingent on the electric charge that the battery can store. A set of 150AH batteries and another set of 330AH batteries store more than twice the amount of power, resulting in a doubled usage time.
The formula for calculating the stored power of the battery is as follows: 24V x 150AH = 3600WH = 3.6KW*H. This signifies that a 150A-hour battery pack has the capacity to store 3.6 kWh of electricity.
For Battery information, please don't hesitate to reach out to ZEMTRA Technical Support.
Environmental Factor:
The utilization of a no-idle AC unit for trucks operates similarly to home air conditioners. The condensation efficiency of the refrigerant worsens with higher external ambient temperatures, resulting in increased electricity consumption by the parking air conditioner.
Inverter air conditioners manage the compressor and condensing fan power based on the temperature difference between the cab's interior and exterior. This control mechanism aims to conserve electricity and extend usage time, with true frequency conversion units offering approximately 20% more efficiency compared to fixed-frequency systems.
After considering these factors, calculating the usage time of the parking air conditioner involves several steps. For instance, let's take a split air conditioner with a rated input voltage of 24V, a rated input current of approximately 30A, and a rated input power of 24V*30A=720W. Assuming a battery capacity of 180AH used for 2 years, and factoring in annual battery loss (18%) and the power needed for engine start (25%), the battery can release up to 1684.8WH.
Using the formula 1684.8WH/720W, the result is 2.34 hours. Since the truck split air conditioner is an inverter type, the actual usage time is around 2.34*1.2=2.808 hours. Consequently, a set of 180AH batteries can be used for approximately 2.8 hours during the day with a Haier parking air conditioner. With 2 batteries, this time extends to 5 to 6 hours during the day and surpasses 10 hours of continuous operation at night, thanks to the more favorable nighttime conditions for condensation and the prolonged effect of the no-idle truck AC's frequency conversion.
Conclusion:
In summary, it's established that the Zemtra Parking Air Conditioners in the majority of trucks can typically endure for approximately 5-6 hours. Should you have any additional requirements or inquiries, please don't hesitate to reach out to ZEMTRA Technical Support.