Types of HVAC TECHNOLOGY Types of HVAC TECHNOLOGY

What is HVAC? HVAC stands for Heating, Ventilation and Air Conditioning equipment. They are used to provide thermal comfort and improve air quality. There are two other types of HVAC systems which are HVACR and HACR. They can be fitted to residential structures, corporate structures and hospitals. HVAC systems replace air and provide air with high indoor quality. These systems must be fitted professorially by HVAC contractors.

Types of HVAC Technology Variable Air Volume (VAV) Constant Air Volume (CAV) Variable Refrigerant Flow (VRF) Chilled Beams Heat Pumps Unit Ventilators

This is a single duct air system with varying air flow. In this system the supply air temperature can be controlled. VAV systems use a thermal reheat box for better temperature control. They are powered by a terminal fan for better zone control. Variable Air Volume (VAV)

Constant Air Volume (CAV) This is a single duct air system which supplies constant air flow. This system is equipped with a thermostat used to vary air temperature.

Variable Refrigerant Flow (VRF) This system uses a heat pump which regulates the heating and cooling medium. It is equipped with a heat recovery option. The recovery options allows the condensing unit to operate in different modes. This system is designed to reduce energy consumption.

Chilled Beams This is a terminal unit which comprises of a heating and cooling coil. Active chilled beams increase the capacity of the induction unit with air. Passive chilled beam use an induction unit for temperature control.

Heat Pumps Heat pumps move energy from one location to the other. They reverse between heating and cooling modes. This is a conventional HVAC system.

Unit ventilators are exposed to the area which requires ventilation. They comprise of an internal fan and a heating or cooling coil. Unit Ventilators

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