INTRODUCTION: HVAC BASICS

IPI s Methodology for Implementing Sustainable Energy-Saving Strategies in Collections Environments (2017)9 hvac BASICSINTRODUCTION:Air Handling SystemComponents/Layout:DampersFilters Cooling Coil Heating Coil Humidifier Supply Fan Diffusers Return Fan Air Flow:Air enters the system from the outside through an air duct and is mixed just before the filters with return air from the space. The mixed air is pulled through a set of filters (B) where impurities like particulates and gaseous pollutants are removed. As the air moves forward, it passes over a set of cooling coils (C), where the air is cooled, and depending on the dew point of the passing air, may be dehumidified. The air then passes over a set of heating coils (D) where it is heated to the required temperature if necessary.

1. An outside air duct can be found either before the cooling coil or before the filters on the air handling unit, depending on the design. 2. A system may have multiple sets of filters to remove different levels of impurities. 3. If the outside air duct is before the cooling coil the filters may be located before the outside air damper or ...

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  Introduction, Basics, Design, Hvac, Duct, Hvac basics

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