Kitchen Exhaust And Make Up Air

Where exhaust fans clothes dryers and kitchen ventilation systems interfere with the operation of appliances makeup air shall be provided but these excerpts still don t provide any insight into when makeup air is required and how to provide it.

Kitchen exhaust and make up air. Such makeup air system shall be equipped with a means of closure and shall be automatically controlled to start and operate simultaneously with the exhaust system. Make up air is not only essential to process exhaust systems but is also a part of safety and building code requirements. Exhaust hood systems capable of exhausting in excess of 400 gfm shall be provided with makeup air at a rate approximately equal to the exhaust air rate. Kitchen exhaust 1 kitchen and dining facilities use a large amount of energy per floor area.

Simply stated a make up air unit pulls air in to your space from outdoors and conditions it to the indoor temperature to replace air that s pulled out by your kitchen exhaust equipment. A make up air unit also known as an air handler is an hvac device used to regulate the flow of air and exhaust in your kitchen. It is necessary to circulate clean air when you use kitchen ventilation systems. Kitchen exhaust hoods contribute greatly to that energy use.

1 engineered openings 2 hvac integrated air systems and 3 dedicated makeup air units. M1503 4 makeup air required. Introducing makeup air for a residential kitchen exhaust system using three common techniques. Energy is used both to operate fans and to heat and cool makeup air that is then exhausted.

2018 irc g2407 5 makeup air provisions. We will also discuss common design practices for meeting the interlocking and closure requirements of the. Kitchen designers usually select the hoods while mechanical engineers design the hvac and makeup air systems. Introduction of makeup air have a significant impact on exhaust and makeup air ventilation rates.

Most buildings require a supply of fresh make up air to replace air being removed by ventilation systems exhausting fumes vapors mists gases and odors.