We all love the ultimate chill blasting from the car’s vents, especially after we need to survive In the hot and humid climate. When the car AC is turned on and it emits cool and refreshing air, the entire traveling becomes easy and relish. However, believe it or not, no car comes with a fridge that’s filled with multiple ice cubes. The cold air that we get from the AC vents is converted from the hot air. The hot air needs to undergo multiple steps to convert into cool and fresh air.
The Thermodynamic process is involved here and that’s what maintains the temperature inside your car room. Here, the pressure is involved and it causes changes inside temperature. You just should turn the AC on and also the compressor will do the further work. However, it’s not that straightforward as it looks.
Common forms of Car AC systems
1. Orifice Tube and Accumulator System:
The Orifice Tube and Accumulator system comes with the orifice tube. The Orifice Tube controls the refrigerant flow and controls the low-pressure mist before entering the evaporator. Whereas, accumulator holds the refrigerant and removes moisture from it to manage the damage.
2. Expansion Valve and Receiver-drier System:
The Expansion valve and receiver-drier system include an expansion valve before the evaporator core and receiver-drier between the condenser and in-line filter kit. The desiccant during this system absorbs the moisture. It works just like the accumulator, but it’s located on the high-pressure side instead of the low-pressure side. The expansion valve works identical in both systems and restricts refrigerant flow to convert the liquid into the low-pressure mist.
How does Car AC work?
- The whole working starts with the Compressor. It compresses or pressurizes the refrigerant and converts it into the liquid from its gaseous state.
- The compressed liquid refrigerant has got to meet up with certain tubes located within the condenser. Here, the fresh air from outside comes within contact with liquid refrigerant. The condenser contains a high-temperature liquid and that’s why there’s a temperature incline between liquid and fresh air. Later, the warmth moves from the liquid and blend with air.
- Then, the refrigerant moves into the receiver drier or accumulator. The desiccant removes the moisture from the air and refrigerant that ends up in the creation of a cooler refrigerant while maintaining the system.
- The refrigerant, which is already within the cool liquid state, flows into the expansion valve or orifice tube. This process reduces overall fluid pressure and allows it to maneuver to the evaporator (another component of AC).
- The converted refrigerant will then move to the evaporator. The air from the car is drawn into the evaporator and go inside the evaporator core. Till now, the refrigerant temperature is cooler and it can convert the surface heat into cold air.
- Fans near the passenger seat help in blowing the cold air through vents and make the car’s temperature cool. This process also removes moisture from the air and allows you to enjoy the fresh and dry air. (During this process, the gathering and draining of the condensate also take place). because the liquid refrigerant within the AC system becomes hotter after working, it again turns into a gaseous state.
- This hot and low-pressure gaseous refrigerant again circulates and goes back to the compressor. this can be how the new cycle takes place and you get the cool, dry, and fresh air.
What are the Components of a Car AC System?
The Car air-con system has almost identical components to a room’s AC. But because the Car is smaller than an area, there are lots of modifications made to that so it can compactly slot in the space.
The main components employed in Car’s AC are:
Compressor:
The compressor of the AC is understood because of the heart. It promotes the pressure of the refrigerant so that it can transform vapor refrigerant into a liquid refrigerant. The liquid refrigerant enables the general flow of air through the condenser.
Condenser:
The condenser could be a small device that controls the condensing. once you want to line the car’s temperature to low or high, liquid refrigerant sent by the compressor needs to face the convection force provided by the radiator fan or by a separated fan. This force helps in controlling it.
Expansion Valve:
Expansion Valve helps in expanding the air mass, by sending low-temperature liquid refrigerant by the condenser. As its name implies, it controls the expansion and reduces the pressure. the discharge pressure of the refrigerant before sending it to the evaporator.
Evaporator:
The evaporator is placed behind the AC vent and appears just like the device. It takes the warmth from the car and converts it into liquid refrigerant by changing it into vapor. you’ll be able to enjoy cooling through a disciple inside the passenger’s section.
Orifice Tube:
The orifice tube is within the shape of a cone and provided restriction within the flow of refrigerant. It allows the refrigerant to convert high to low-pressure liquid refrigerant mist before entering the evaporator.
Receiver Dryer:
The receiver Dryer is understood because of the safety device because it maintains protection within the car. after we are using the cooling system, sometimes liquid starts flowing towards the compressor rather than vapors, which might damage the compressor. therefore the receiver dryer is employed inserted between the compressor and evaporator to rework the remaining liquid into vapors so send it for compression.
AC Inline Filter:
Air conditioning inline filter kit traps wreckage and offers you the cleaned air.
AC Refrigerant:
Refrigerant incorporates a low boiling point and is employed by the AC as a heat exchanging medium. it’s within the fluid form, so changing the temperature becomes very easy through it. At low temperatures, the refrigerant converts into gaseous form, while it stays liquid at the hot temperature.
Accumulator:
The accumulator holds the refrigerant. It desiccant the refrigerant bag by removing moisture from it so circulate it inside the car.
How Do Heated/Cooled Seats Work?
Cooled Seats:
Cooled (or air-conditioned) seats work by confining cooled air directly within the seat where the passenger is seated. Different car makers achieve this in numerous ways, but here is that the most typical method:
- The seat is formed with more porous material than traditional car seats, which are made to permit air to flow through them
• The porous material of the seat by itself allows your body to breathe, making it feel cooler and fewer sweaty
• Multiple fans are put within the seat to supply air circulation.
• The air from the fans blows through a diffusion layer to spread the cool air throughout the seating material, cooling the entire surface.
• The cooling air from the fans also serves to hold the warmth from the surface of your body away, instead of trapping it as traditional car seats do.
The advantage of these seats is that they use energy to chill the passenger more efficiently than traditional car aircon, which improves the car’s fuel efficiency and reduces its emissions.
Heated Seats:
Heated seats, meanwhile, use the identical technology as electric blankets or other appliances and gadgets that use electricity to make heat. It uses a protracted strip of a component through the fabric of the seat called a resistor that heats up when an electrical current is run through it.
The way heated seat work implies that the longer the seat warmer is left on, the warmer it’ll get… even to the purpose of being extremely uncomfortable for the person sitting on that. This is often why most cars that have a seat warmer also include a sort of thermostat which can allow you to line the amount of warmth that the seat can reach.
Power Seats and its Benefits
Power Seats:
Power seats are usually the front seats of any vehicle which can be adjusted using one or several small motors. You control these motors by shifting some small switches or a joystick-like button. Some vehicles may have only the motive force seat powered but it’s quite common in high-end vehicles for both the driving force and passenger seats to be powered.
Benefits of Power Seats:
One of the advantages of power seats is that the number of positions the seats are often adjusted to. Conventional front seats were adjusted by using levers that allow you to create fore and aft (forward and backward) adjustments to the seat. Another lever is employed to regulate the backrest allowing you to maneuver it forward and backward. Power seats can have up to 22 different positions.Another benefit is that the motors move the seat so you do not should physically move it yourself and that they are powerful enough to maneuver the seat while you sit in it. The motors adjust the seats at a cushty rate, not too fast or too slow for many people’s preferences.Power seats have provided the platform for an improvement in luxury seating by way of memory seats because it is simple to use a memory function to electronically adjusted seats.They can easily be adjusted while driving because the switches are easily accessed as they’re usually placed in an ergonomic or easy to succeed in the area. The controls will be found on the outer side of the seats, the middle console, or on the door.
Comfort:
Power seats can add more comfort and luxury to a vehicle because the switches for all the world electronically adjustable is placed almost anywhere. Thereupon being said in some vehicles (for example Mercedes S-Class & Lexus LS) there are switches to regulate the front passenger seats that are easily accessible by the driving force or rear-seat passengers in chauffeur-driven vehicles. Power seats are a valued addition to any luxury vehicle and are slowly finding its way to mainstream vehicles. They’re also accustomed to moving the rear seats of chauffeur-driven limousines or sedans with long wheelbases.
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