heating ventilating air conditioning engineers

heating ventilating air conditioning engineers


heating ventilating air conditioning engineers are in charge of air conditioning systems, or a standalone air conditioner that will provide cooling and/or humidity control for all or part of a building.

Air-conditioned buildings often have sealed windows, because open windows would work against the system intended to maintain constant indoor air conditions.

Outside, fresh air is generally drawn into the system by a vent into a mixed air chamber for mixing with the space return air.

Then the mixture air enters an indoor or outdoor heat exchanger section where the air is to be cooled down, then be guided to the space creating positive air pressure.

The percentage of return air made up of fresh air can usually be manipulated by adjusting the opening of this vent. Typical fresh air intake is about 10% of the total supply of air

Air conditioning and refrigeration are provided through the removal of heat.

Heat can be removed through radiation, convection, or conduction.

The heat transfer medium is a refrigeration system, such as water, air, ice, and chemicals are referred to as refrigerants.

A refrigerant is employed either in a heat pump system in which a compressor is used to drive the thermodynamic refrigeration cycle or in a free cooling system that uses pumps to circulate a cool refrigerant (typically water or a glycol mix).



It is imperative that the air conditioning horsepower is sufficient for the area being cooled. Underpowered air conditioning system will lead to power wastage and inefficient usage. Adequate horsepower is required for any air conditioner installed.