A huge commercial HVAC system is very complicated. They do more than just regulate the temperature of the inside and airflow from outside, remove polluted air through the filtration or exhaust system, and control the energy consumption.
HVAC System Function in Large Buildings:
How do they all fit together?
Let's think about the cooling process of a typical HVAC system.
Compressing refrigerant increases its temperature and pressure.
Outside air is hot and is blown into the refrigerant's vapor by the condenser, which liquefies it.
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The expansion valve converts refrigerant to a liquid at low pressure and cools it.
Different types of Commercial HVAC Systems
Commercial buildings can benefit from a range of interconnected systems that offer cooling and heating to specific floors as well as other spaces.
A few solutions that you might see in a commercial HVAC system are:
Heat Pumps: Takes heat from water or air to heat – similar to the reverse of a refrigerator. In a water source heat pumps pipe, water is pumped through the building to supply to the heating pump.
Rooftop Units: These units are placed on the ground or the roof and can duct the heated air to the room. They're common for commercial HVAC applications in New York.
Heating devices: They come in two kinds – standard hot air furnaces that use fuel to heat air and radiant heaters which make use of invisible infrared radiation to direct heat to objects.