HVAC is an abbreviation that stands for “heating, ventilation, and air-conditioning”. Sometimes, it is also referred to as climate control. So, as the name indicates, this tool has three main functions and they are as follows:
1. Heating: The process of setting the air to create hot air.
2. Ventilating: The process of air exchange.
– Forced: air vents with the help of mechanical devices, such as the supply fan and exhaust fan.
– Natural: naturally occurring ventilation without the aid of mechanical devices, such as the air exchange through windows or doors.
– Mixed: combined velocity between forced and natural.
3. Air Conditioning: The process of cooling the air
Those three functions of HVAC are connected to each other as they define the humidity and temperature of the air in a building. Moreover, they also provide fresh air for the residents, manage smoke control and keep the pressure within rooms. In the design of modern buildings, the design, installation and control systems of this function are made into a single HVAC system. In terms of installing and controlling the HVAC system, it needs an expert, such as the Air Jackson HVAC Auburn CA, to handle it.
In the HVAC, there are also several different instruments, namely:
A chiller is a refrigeration machine that serves to remove the liquid heat on the evaporator side, which will then be distributed to the FCU / AHU heat exchanger.
B. FCU / AHU
– Fan Coil Unit (FCU):
FCU is a simple device consisting of a coil (coil) and fan. FCU is used to control indoor temperature controlled by on / off switch or thermostat. Because of the simplicity, FCU is more economical than AHU.
– Air Handling Unit (AHU):
AHU is a tool used for conditioning and circulation as part of the HVAC system. AHU is usually a large box made of a metal containing blowers, heating or cooling elements, filters, silencers.
C. Cooling tower
Cooling towers are an apparatus used to lower the water flow temperature by extracting the heat from the water and emitting it into the atmosphere. The cooling tower uses evaporation whereby some water is evaporated into the moving air stream and then discharges into the atmosphere.