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CarsAuto HVAC system
by:
Kevin Schappell
Not only do we depend on our cars to get us wherever
we want to go, we likewise depend on them to get us there without discomfort. We expect the heater to support us warm once
it's cold outside, and the air learning system to support us cool once
it's hot.
We get heat from the heater core, sort of a secondary radiator, which is part of the car's cooling system. We get air learning from the car's elaborate air learning system.
Despite its comparatively
small size, the cooling system has to deal with an tremendous figure of heat to protect the engine from friction and the heat of combustion. The cooling system has to move out simply about 6,000 BTU of heat per minute. This is a lot more heat than we need to heat a large house in cold weather. It's nice to cognize that several of this heat can be put to the useful intention of keeping us warm.
Air learning does drive more much comfortable in hot weather. Your car's air conditioner cleans and dehumidifies (removes excess moisture), the outside air entering your car. It likewise has the task of keeping the air at the temperature you select. These are all big jobs. How do our cars support our "riding environment" the way we like it?
Most folk think the air learning system's job is to add "cold" air to the interior of the car. Actually, there is no such thing as "cold," simply an absence of heat, or less heat than our bodies are comfortable with. The job of the air learning system is actually to “remove” the heat that does us uncomfortable, and returns the air to the car's interior in a "un-heated" condition. Air conditioning, or cooling, is actually a process of removing heat from an object (like air).
A mechanical device
circulates a liquid refrigerant called Refrigerant-12 (we tend to call it "Freon," a trade name, the way we call copy machines "Xerox" machines). The mechanical device
moves the Refrigerant-12 from an evaporator, through a condenser and expansion valve, right back to the evaporator. The evaporator is right in front of a fan that pulls the hot, wet
air out of the car's interior. The refrigerant does the hot air's wet condense into drops of water, removing the heat from the air. Once the water is removed, the "cool" air is sent back into the car's interior. Aaaaaah! More better. Newer cars have R-134 as the refrigerant, but activity in the same way as R-12.
Sometimes we worry once
we catch our car production
a water puddle on the ground, but are mitigated
to discover that it's only water dripping from the air learning system's condenser (no color, no smell, and it dries!).
Note: Refrigerant is extremely dangerous. Many an special precautions must be taken once
it is present. It can freeze whatsoever
it contacts (including your eyes), it is heavier than air and can suffocate you, and it produces a poisonous gas once
it comes in contact with an open flame.
The above information is directly from the Automotive vehicle Insight program, which you can buy online from AutoEducation.com.
Common Problems:
· From time to time the A/C system of necessity
to be recharged to bring it back up to maximum efficiency. Sometimes a leak may cause loss of refrigerant and wish need to be fixed before refilling. It's difficult to tell if a leak is present without specific test instrumentality so let it up to a professional.
· Corrosion wish cause the heater core (secondary radiator) to leak. This wish manifest itself by effort steam into the rider compartment and fogging your windows. You wish cognize there is a leak by the sweet smell coming from your vents. Regrettably
dynamical
the heater core is ordinarily not the easier job in the world, as engineers tend to squeeze them into several pretty tight spaces under the dash.
Just simply about the author:
Kevin Schappell maintains http://www.carbuyersclub.comwhere he gives proposal
on buying, selling, insurance, and financing. A mechanical engineer and car guy, Kevin has distinct to spend his online time small indefinite amount others discover simply about automobiles. To discover more simply about how your car works, Kevin has createdhttp://www.mycarwizard.com
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