What Is Kitchen Exhaust Fan in BMS?
The Founder's Explanation (Teach Exactly This Way)
"Exhaust fan — say consider kitchen, basement. In kitchen there is more CO2 from burning LPG and heat. We need to remove that air from kitchen. That is called exhaust fan — KEF (Kitchen Exhaust Fan). How? Like in home kitchen we have exhaust fan. In basement, due to car parking, carbon monoxide will happen. That is harmful to humans. We need to remove that so we run exhaust fan — basement exhaust fan."
Teaching the Concept
Your kitchen at home. When cooking on a gas stove — LPG burns and produces combustion gases. Heat and steam fill the kitchen. In 10 minutes without ventilation — filled with smoke and fumes.
Your home kitchen exhaust fan or chimney solves this immediately. It pulls contaminated air out before it spreads.
Now multiply this to a hotel kitchen — six burners running 8 hours a day, fryers, ovens, continuous LPG combustion. A dedicated exhaust system controlled by BMS is essential.
BMS Kitchen Exhaust Control:
Kitchen idle: Fan at minimum speed — energy saved
CO2 rising: BMS increases fan speed via VFD
Peak cooking: Maximum extraction speed
Fire in kitchen: Fan STOPS immediately
(Running fan during fire spreads fire through ducts)
Manual reset required before restartRelated Topics
- What is BMS integration? — how a BMS connects with VFDs, energy meters, BACnet/Modbus devices and other building systems
- How to design a BMS system step by step — the complete BMS design methodology covering site survey, IO list, controller selection, sequence of operations
- What is a Building Management System (BMS)? — fundamentals of BMS controls and architecture for HVAC, lighting, energy and access
- What is BMS commissioning? — the disciplined commissioning process that turns a BMS install into a working building brain
- Browse all HVAC Systems topics — more from this section of the EnSmart BMS Library