What is ERV, HRV, AHU etc?
The world is full of acronyms which we are all supposed to understand without anyone explaining to us.
Let’s start with a few of those we commonly use in the Fresh Air sector of the Heating, Ventilation & Air Conditioning (HVAC) industry.
ERV – Energy Recovery Ventilator
Equipment that recovers the energy (both sensible and latent heat) from air that is being exhausted from a conditioned space (return air), and transfers that energy to incoming fresh air (outdoor air)
HRV – Heat Recovery Ventilator
Equipment that recovers the energy (sensible heat only) from air that is being exhausted from a conditioned space (return air) and transfers that energy to incoming fresh air (outdoor air). In Australia we commonly use the terminology ERV in referring to both an Energy Recovery Ventilator and/or a Heat Recovery Ventilator.
AHU – Air Handling Unit
Equipment that has a fan and a coil (hot water, chilled water and/or DX coil) that will circulate and/or heat and cool the air to condition a space. It may also contain other elements such as filters, mixing plenum, humidifier, dampers, CO2 sensors and controls. An AHU is usually coupled to a chiller, boiler or external condenser which provide the hot, cold water and/or refrigerant flow to the coils.
DHP – Dehumidification Packaged Unit
Equipment that cools and dehumidifies fresh /outdoor air providing a tempered supply air at a controlled humidity level. Often used as a supplementary unit with the primary function to dehumidify the fresh air requirement to a Data Centre or similar applications.
OAP – Outdoor Air Packaged Unit
Equipment designed specifically where there is a need to directly condition 100% fresh air requirement. The coils require specific design to handle ambient conditions of 35°C air on. Often used to provide tempered supply air of 22-24°C for lobby ventilation or similar applications.
HTC – Humidity & Temperature Control Unit
Equipment designed specifically where there is a need to directly condition a large fresh air requirement. The coils require specific design to reduce the temperature below dew point to dehumidify the air and then utilise a reheat system to provide the supply air at the required temperature.
Disclaimer: The data and information contained in Armcor Air Solution technical specification sheets are representative of expected performance. They are derived from aggregated specifications of the individual components used in the equipment and not from verified laboratory testing. This should only be used for evaluating your specific application and clients have the sole responsibility of satisfying themselves that the goods or services are suitable for any specific use.