Truck Air Conditioner
Qingdao Donjelion International Trade Co., Ltd. is one of the most credible manufacturers and suppliers of truck air conditioner in China. If you're going to buy customized truck air conditioner, welcome to get more information from our factory. Good service and quality products are available.
Leading Industrial Solution Provider
Qingdao Dongjelion International Trade Co., Ltd. focuses on providing one-stop services for the design, research and development, production and sales of new energy air-conditioning systems for trucks and mechanical equipment.
Why Choose Us
Quality Assurance
Our R&D center has the ability to design and develop core components for automotive thermal management systems.
Good Service
Factory-style one-stop service, we can provide all spare parts and technical support.
Reasonable Price
The factory covers an area of 100 acres and has a standard factory building of more than 80,000 square meters.
Fast Delivery
If we have stock of the item you need, we can send goods to you within 2 working days after deposit or 100% payment into our bank account.
Our truck parking air conditioner features advanced cooling technology that assures high-performance refrigeration while operating at a low power consumption. This means that you can enjoy a comfortable indoor environment without worrying about excessive energy usage or high electricity bills.
12V 24V Truck Parking Air Conditioner
This state-of-the-art product is designed for easy and hassle-free installation, making it the ideal solution for any commercial truck owner. In addition to its user-friendly installation, the D3000 boasts excellent cooling performance, ensuring a comfortable driving experience for truck drivers even in the hottest of temperatures.
Portable Air Conditioner for Truck
12V, 24V products are suitable for light trucks, trucks, saloon cars, construction machinery and other vehicles with small skylight openings.
Electric Parking Air Conditioner 12V 24V
This electric air conditioner is operated by a battery (generator). You can still use the air conditioner even when the engine is off. Low noise, energy saving and environmental protection is your best choice.
Truck Cab Sleeper Parking Air Conditioner
This electric air conditioner is operated by a battery (generator). You can still use the air conditioner even when the engine is off. Low noise, energy saving and environmental protection is your best choice. Save thousands of dollars in fuel bills each year.
DC 12V 24V Air Conditioner for Truck
Parking air conditioner is a kind of car air conditioner. It is a device that allows the air conditioner to run continuously with DC power (12V/24V/36V) from the vehicle battery while waiting or resting, and regulates and controls the temperature, humidity, flow rate and other parameters of the ambient air in the vehicle to fully meet the needs of the truck driver for comfortable cooling.
Truck Battery Powered Parking Air Conditioner
Which boasts a significant improvement in cooling performance while using even less electricity. This sleekly designed product not only offers outstanding functionality, but also adds a touch of class to any vehicle it is installed in. We are proud to say that it is currently the best choice for car air conditioning systems.
100% Electric Parking Truck Cabin Air Conditioners
Specially designed for small transport vehicles, used in various agricultural or mechanical work equipment. Large heat exchange area, automatic swing, intelligent protection of vehicle voltage, design filter, clean air.
This game-changing product is a powerful double fan air conditioning system that delivers instant and refreshing cool air.
How Your Truck's Air Conditioner (AC) Works
In principle, air conditioners and refrigeration units don't produce cold air. These systems transfer heat from one place to another and therefore reduce temperature in a confined area (passenger compartment, inside the refrigerator, your home, etc.).
The concept is believed to go as far back as ancient Egypt with the use of wet reeds hung in a window. As a breeze flowed through the reeds, the moisture would evaporate. The evaporation process removed heat and cooled the incoming air.
This same theory of evaporation to reduce temperature is used in modern automotive A/C systems, only with the use of a highly volatile liquid (refrigerant) sealed inside a network of components.
The volatility or low boiling point of a liquid refrigerant is essential to an A/C system's functionality in the real world. Unlike water, which boils or vaporizes at 212 degrees, the current most-used automotive refrigerant, R134a (tetrafluoroethane), becomes a vapor at 15.1 degrees below zero. Now, keep in mind that another relative aspect of volatility is that a liquid's boiling point increases with higher pressure applied.
The refrigeration cycle begins at the A/C compressor, a pump taking in low-pressure vaporized refrigerant. The compressor expels the vapor under high pressure to the condenser. The condenser, appropriately named, is where the refrigerant condenses back to a liquid form. Remember, higher pressure increases the temperature evaporation occurs, hence the point of condensation. The reverse of evaporation absorbing heat, condensation disburses that same heat. In this case, heat travels out of the refrigerant, through the condenser, and into the atmosphere.
An A/C condenser resembles, and is located in front of, the engine's radiator. Just like a radiator, it consists of multiple rows of passages and metal fins, which supply a wide area of air contact. The heat transfer is finalized with sufficient airflow through the vehicle's grill, aided by mechanical and/or electric motor-driven cooling fans.
Exiting the condenser and have disbursed the heat, we now have a liquid form of refrigerant remaining under high pressure. Next step in the cycle is the expansion valve, as refrigerant crosses the firewall and enters the passenger compartment. The expansion valve is a variable (or sometimes fixed) orifice, which is significantly smaller than the lines and hoses the refrigerant travels through. This reduction in size reduces the pressure of the liquid refrigerant passing through. This reduction in pressure lowers the boiling point and the refrigerant is forced to evaporate.
The evaporation process takes place in the next component in line, the "evaporator," which is located within the passenger compartment. Just like airflow through the condenser disbursed heat into the atmosphere from the condensing high-pressure refrigerant, the vehicle's blower motor and fan routes air through the evaporator. Here the vaporization of low-pressure refrigerant absorbs the heat from the passenger compartment. The evaporator is designed very similar to the condenser and the engine's radiator, allowing a wide area of air contact for heat absorption.
The full cycle ends up where we started. The low-pressure refrigerant vapor carrying the heat from the passenger compartment travels back to the intake side of the A/C compressor.
Additional components, depending on the type of A/C system, are referred to as the receiver-drier and accumulator. A system using a thermal expansion valve, which varies the size of the orifice with system temperature, requires a receiver-drier. It's located between the condenser and expansion valve. Its purpose is to store liquid refrigerant so there's an adequate amount at the expansion valve under all conditions. It also contains a filter and desiccant to remove unwanted moisture and debris.
A system using a fixed orifice tube includes an accumulator, which similar to the receiver-drier but is located between the evaporator and compressor on the low-pressure side of the system. It prevents any liquid refrigerant from reaching and damaging the compressor, while also filtering moisture and particles.
We keep hearing about the high and low pressures within the system. That's where the terms high-side and low-side came about. The high-side of the system includes the output side of the compressor, the condenser, hoses, and lines up to the expansion valve. The low-side begins after the pressure drop at the expansion valve and includes the evaporator and lines/hoses, and leads up to the intake side of the compressor. Pressures vary depending on temperature and types of systems, but ballpark numbers while the system is running are about 20 psi low-side and 150 psi high-side. With the system off, both sides will equalize to around 80 psi.
If you ever noticed the two refrigerant service fittings under the hood, one is in a low-side line and the other is in a high-side line. These fittings are used for recovery, evacuation, and recharging of the system's refrigerant, but they're also critical in diagnosing system problems.
The electrical engagement part of each A/C system is important in both maintaining performance and protection from damage. It's all based on the engagement and disengagement of the AC compressor clutch. The clutch consists of a steel pulley mounted to the compressor housing and a matching disk, which turns the compressor, input shaft. When 12 V is applied to the electromagnetic coil behind the pulley, the magnetic force locks the disk to the pulley and the compressor is engaged (rotating with the engine by means of a drive-belt).
On most current systems, the powertrain control module (PCM) controls compressor engagement in conjunction with cooling fan operation. However, there are several important data inputs that must be confirmed before this ever happens. It all takes place through communication between the heating, ventilation, and air conditioning (HVAC) control module and the PCM.
Needed Inputs
AC switch "ON"
System pressure within high and low parameters (above 40psi, below 300psi)
Blower motor "ON"
Evaporator temperature above freezing
AC compressor temperature below a dangerous level (on some systems)
System pressure sensors are sometimes used as a failsafe. If static pressure is too low due to a loss of refrigerant, the compressor clutch will not engage to prevent compressor damage. Traveling along with the system's refrigerant is refrigerant oil, which lubricates the compressor. With no refrigerant, there's no oil flow and the compressor takes a beating.
Excessively high system pressure can be caused by a lack of airflow through the condenser (increasing temperature and pressure), possibly due to a bad cooling fan or blockage of airflow. This too will cause the system to disengage the compressor as a safety measure.
Normal cycling of the A/C compressor is controlled by two basic data inputs. Cycling is the compressor clutch engaging and disengaging in a uniform manner. Some systems use a low-pressure cycling switch that results in disengagement when low-side pressure decreases below a certain point. Others will see temperature at the evaporator approaching freezing (evaporator thermal sensor) and shut down the system to prevent freeze-up. When air passes though the cool evaporator, moisture from the air condenses and drips downward. The water collects in the HVAC case, eventually draining out on the street. If the evaporator temperature reaches 32°, this condensation will freeze, and the ice buildup on the evaporator will prevent cooling and block airflow.
A/C systems are pretty much routine maintenance-free, aside from replacement of an interior cabin filter or the drive belt. But problems do happen.
The Importance of Truck Air Conditioner
Now an air conditioner is increasingly seen as a necessity for summer living, and there are many new vehicles that come with it as standard. This is due in no small part to rising expectations - if you're spending thousands of dollars on a new vehicle, you want your new vehicle to be as fully functional as possible. At this point, you may be surprised at just how many benefits your truck's air conditioner offers.
A More Comfortable Driving Experience
The most obvious benefit of using an air conditioner system in your car is the comfort it provides you with. Using the air conditioner to lower the temperature inside your car without having to open the windows means you no longer have to struggle in the sweltering heat of your car on a hot summer's day. While it's fun to walk slowly through town with the windows open, we wouldn't recommend trying it on the motorway. You'll end up being blown away by the feel of the gusty wind and the noise, and there's no chance of hearing the radio or your passengers. So instead of opening the windows and drowning out the sound of the radio, keep your cool by using the air conditioner and you'll still be able to hear your favorite tunes.
Better Air
It's called air conditioner because that's exactly what it does - conditions the air. This means that excess moisture is removed from the air and results in cleaner, fresher air, which is exactly what you want on a hot, muggy day.
Defogging The Windscreen
It's vital that you see through your windscreen and other glass, as a mist on the glass can seriously impair your vision. Using air conditioner will reduce fogging in the windscreen. This is particularly beneficial if you have moisture in your car, or if your people carrier is often packed with wet children, as most air conditioner units are very effective at defogging your windscreen, side glass, and rear windscreen.
Better Safety
Using air conditioner can also provide you with better road safety. Too many road accidents are caused by overexertion. Turning on the air conditioner prevents the drowsiness that comes from being too tropical, which means you can always be alert and drive more safely.
More Aerodynamic
With air conditioner, you can close the windows even in hot climates. This means that your vehicle's aerodynamics are at an optimum level, which increases safety for you and your passengers and reduces exterior noise. And for long journeys, air conditioner has little or no impact on fuel consumption. In fact, using air conditioner may save you more money than if you open the windows.
Topleader is an energy-saving and environmentally friendly national high-tech enterprise that develops, manufactures, and sells truck cab battery air conditioner systems and portable DC air conditioners. Now we are looking for partners all over the world. If you want to choose a truck air conditioner manufacturer in China for your business, we would be the best choice!
Keep Your Truck's A/C in Top Shape
You don't have to be a technician to monitor your pickup truck's air conditioning system. There are several things you can do to help keep your truck's A/C out of the repair shop.
A/C Parts Under the Hood
Drive Belt: A drive belt makes your truck's air conditioning compressor turn, which keeps the cooling refrigerant circulating through the system. When the belt is worn, stretched or cracked it can slip or break, stopping the compressor and shutting down the A/C. Check the belt periodically to make sure it's in good shape.
An A/C drive belt and compressor are sometimes hard to locate, especially under the hood of newer vehicles where covers and other components hide them from direct view. The next time you take the vehicle to the shop for an oil change, ask the technician to show you where the A/C belt and compressor are located.
Air Conditioning Condenser: Your truck's air conditioning condenser is located in front of the radiator, and it actually resembles the radiator. Air flowing across cooling fins removes heat from the refrigerant as the refrigerant circulates through the condenser.
If the condenser's fins become damaged or plugged with debris, air flow is restricted, and the refrigerant isn't cooled. Restriction can also cause the vehicle to overheat. Check the fins periodically to make sure they are clean and in good condition.
Signs of Air Conditioning Problems Inside the Truck
Wet carpeting on hot, humid days can indicate a clogged air conditioner drain. When the drain is working correctly you'll see a good amount of water dripping onto the pavement under the vehicle after you park.
A vibration or abnormal noise when the fan is on could indicate debris in the blower fan (mice like to build nests in fans).
A reduced amount of air coming out of the vents, especially if it happens after driving for a while, might mean the air conditioner's evaporator is freezing up.
A musty or mildewy odor when the fan is first turned on, or all the time when the system is running, can indicate that mold or mildew is growing in the evaporator box. Reduce the buildup of mold and mildew by turning the A/C recirculation switch off when you park the truck. If your vehicle doesn't have a recirculation switch, turn the A/C switch away from the "Max Air" position every time you shut off the engine.
Some A/Cs will still develop a musty odor, but many service departments offer an evaporator cleaning procedure to eliminate the smell.
Using Your Truck's A/C
When you get into a hot car, roll your windows down a little for the first few blocks. If you have a recirculation button, make sure it's turned off. After the hot air is gone, turn to recirculate on.
We're all concerned with fuel mileage, but modern auto air conditioning systems are pretty efficient. Turning the A/C off results in minimal gas savings.
If you discover a problem that you can't fix yourself, take the vehicle to a trusted technician.
Why Does My Truck Air Conditioner Freeze Up? There are several that your Truck Air Conditioner Can Freeze Up. One of the possibilities is to much moisture in the Air Conditioning System. In this instance what needs to be done is hook an AC Recovery Machine to the truck and recover the refrigerant. Then depending on the system, we would recommend a new AC Accumulator or an AC Receiver Drier assembly. Also, we would recommend replacement of the Orifice Tube or Expansion valve depending on system configuration. Another possibility would be that the temperature sensors or the pressure switches are not working correctly and allow the AC Compressor to run all the time creating a freeze up condition. If your Truck Air Conditioner System is Freezing Up or Truck Air Conditioning System Is Not Blowing Cold Air. Bring your Truck to us so can Diagnose Your Truck AC System.
Essential Guide to the Role of Evaporators in Truck AC Systems
In the scorching heat of summer or during long hauls, a reliable air conditioning (AC) system is not just a luxury but a necessity for truck drivers. Among the various components that make up these systems, the AC evaporator plays a crucial role. In this article, we'll delve into the significance of truck AC evaporators, how they function, common issues they face, maintenance tips, and more.
Before we explore the role of AC evaporators, it's essential to understand the basics of truck air conditioning systems. These systems work by circulating refrigerant through various components to absorb heat from the cabin and release it outside, thus cooling the interior air.
The AC evaporator is a vital component located inside the HVAC (Heating, Ventilation, and Air Conditioning) unit of a truck. It's responsible for absorbing heat from the cabin air, which cools it down before the cooled air is blown into the interior space.
The evaporator operates on the principle of heat exchange. Refrigerant enters the evaporator as a low-pressure liquid and absorbs heat from the warm cabin air. As the heat is absorbed, the refrigerant evaporates into a gas, which is then circulated back to the compressor to start the cooling process again.
Importance of Truck AC Evaporators
Truck AC evaporators play a crucial role in maintaining a comfortable cabin temperature and ensuring air quality during long hauls.
Maintaining comfortable cabin temperature
The evaporator's primary function is to cool down the air inside the cabin, keeping the occupants comfortable, especially on hot days.
Ensuring air quality
In addition to cooling the air, the evaporator also removes moisture, dust, and other impurities from the cabin air, improving overall air quality and preventing the growth of mold and bacteria.
There are several types of evaporators used in truck air conditioning systems, including:
Tube and fin evaporators: These consist of tubes through which refrigerant flows, surrounded by fins that increase the surface area for heat exchange.
Plate and fin evaporators: Similar to tube and fin evaporators but with flat plates instead of tubes.
Serpentine evaporators: These feature a serpentine-shaped tube design, maximizing heat transfer efficiency.
Evaporators consist of several key components, including coils, fins, expansion valves, and refrigerant lines. Coils facilitate the transfer of heat, while fins increase the surface area for more efficient cooling. Expansion valves regulate the flow of refrigerant, ensuring optimal performance.
Despite their importance, truck AC evaporators can experience various issues over time, including:
Clogging: Dirt and debris can accumulate on the evaporator coil, reducing its efficiency.
Refrigerant leaks: Leaks in the evaporator coil can lead to a loss of refrigerant and decreased cooling performance.
Corrosion: Exposure to moisture and contaminants can cause corrosion, leading to structural damage.
It's essential to recognize the signs of a failing AC evaporator, including:
Weak airflow: Reduced airflow from the vents may indicate a clogged or malfunctioning evaporator.
Unpleasant odors: Mold or mildew growth on the evaporator coil can cause foul smells inside the cabin.
Frost buildup: Excessive frost on the evaporator coil could signal a refrigerant leak or airflow restriction.
Several factors influence the performance of evaporators, including ambient temperature, airflow rate, and the type and charge of refrigerant used in the system.
In case of evaporator malfunctions, timely repairs are essential to restore optimal performance. Depending on the extent of the damage, repairs may involve cleaning coils, replacing fins, or repairing refrigerant leaks. In severe cases, replacing the entire evaporator unit may be necessary.
The cost of evaporator maintenance and repairs can vary depending on the extent of the damage and the type of replacement parts required. Truck owners should budget for regular servicing to avoid unexpected expenses.
When selecting a replacement evaporator, factors such as compatibility, efficiency, and durability should be taken into account. Consulting with a trusted HVAC specialist can help truck owners make informed decisions based on their specific needs.
Modern evaporator designs offer enhanced efficiency and durability, leading to improved cooling performance and lower energy consumption. While the initial investment may be higher, the long-term benefits justify the cost.
To ensure optimal performance and longevity of AC evaporators, consider the following maintenance tips:
Regular cleaning: Schedule routine cleaning of the evaporator coil to remove dirt and debris.
Inspection for leaks: Check for any signs of refrigerant leaks and repair them promptly to prevent further damage.
Professional servicing: While DIY maintenance is beneficial, certain issues may require the expertise of professional technicians. Complex repairs, refrigerant recharge, and component replacements are best handled by trained professionals to ensure safety and proper functionality.
Maintaining a healthy evaporator not only ensures optimal cooling performance but also contributes to energy efficiency and prolongs the lifespan of the entire AC system. Additionally, regular maintenance can help prevent costly breakdowns and repairs, saving both time and money in the long run.
Our Factory
Our factory is located in Zibo City, Shandong Province. The factory covers an area of 100 acres and has a standard factory building of more than 80,000 square meters. It has more than 20,000 square meters of high-standard dust-free constant temperature and humidity workshops and introduces advanced production equipment: Swiss CNC machining center, Japanese turning and milling compound machining center, German CNC grinder, Japanese Mitutoyo three-dimensional coordinate measuring instrument, and fully automatic ultrasonic cleaning agents and advanced assembly lines, and is also equipped with a technologically advanced environmental simulation laboratory for vehicle electric air conditioning systems.
FAQ
Q: What is parking AC?
Q: What is the purpose of the car conditioner?
Q: How often should car AC be recharged?
Most carmakers recommend that you recharge your air conditioning system every two years. But many factors can affect how often you need to recharge your system, including the climate you live in and how frequently you use your AC.
Q: What is parking AC vs parking DC?
Q: What are the two types of parking?
Q: Should I leave car air conditioner on all the time?
Q: Should you turn off air conditioner in car?
Q: What are the disadvantages of AC in a car?
Q: How much does it cost to recharge an AC in a car?
Q: Can I run my car AC while parked?
Q: How can I make my car AC cool faster?
One way to speed up the process is to use the recirculation mode. This mode will close off the outside air intake and recirculate the cool air that's already inside your car. Using the recirculation mode can help your air conditioner work more efficiently and cool down your car faster.
Q: What is the best setting for car AC?
Q: What is the time limit for parking in DC?
Q: What are the application of air conditioning system?
Q: What is the application of car air conditioner?
Q: What is a parking air conditioner?
Q: What are the application of portable AC?
Q: What are the four basic functions of an automotive air conditioning system?
Pressurizing the refrigerant to cool the air.
Sensing temperature changes inside and outside your car.
Monitoring and controlling temperature output.
Moving air to the condenser.
Q: What are the 3 important functions of air conditioner?
Q: Can you run AC in parked car?
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