Dry Pipe Sprinkler System – Working Principle A Dry Pipe Sprinkler System is an automatic fire protection system designed primarily for areas where low or freezing temperatures could cause water-filled sprinkler pipes to freeze and become damaged. It is commonly used in locations such as cold storage areas, unheated spaces, parking areas, warehouses, and other temperature-sensitive environments. How the System Works Under normal conditions, the sprinkler piping is not filled with water . Instead, the pipes are maintained with pressurized air or nitrogen . Water is held on the supply side of a dry pipe valve , which prevents water from entering the sprinkler piping until the system is activated. When a fire occurs, the heat generated by the fire causes the nearest sprinkler head to reach its operating temperature. The sprinkler head then opens, releasing the pressurized air or nitrogen from the piping. As the compressed air pressure decreases, the pressure difference across t...
Gul Bahar Shah
Gul Bahar Shah
Key Function points of
AHU
FAHU
TFAHU
1. AHU – Air Handling Unit
Function:
Handles indoor air only. It recirculates air from inside the building, conditions it (cooling or heating), filters it, and supplies it back into the rooms.
Key Points:
Mostly uses return air from inside the building.
Limited fresh air.
Used in malls, offices, hospitals, airports.
Main job: temperature and humidity control.
2. FAHU – Fresh Air Handling Unit
Function:
Dedicated for fresh outside air. It takes 100% outdoor air, filters it heavily, cools it (or heats), and then supplies it into the building.
Key Points:
Takes only outdoor air.
Used where indoor air quality needs to be high.
Helps maintain oxygen level and positive pressure.
Often works together with AHU.
3. TFAHU – Treated Fresh Air Handling Unit
Function:
An upgraded version of FAHU. It not only cools and filters outdoor air but also dehumidifies and treats it to a higher standard before supplying.
Key Points:
100% fresh air.
Better filtration and moisture control than FAHU.
Popular in hot and humid regions like GCC countries.
Ensures fresh air with controlled humidity for energy efficiency and comfort.
hashtag#AHU hashtag#FAHU hashtag#TFAHU hashtag#HVAC hashtag#HVACSystems hashtag#FreshAirSystem
hashtag#BuildingManagement hashtag#MEP hashtag#MechanicalSystems hashtag#IndoorAirQuality
hashtag#FacilitiesManagement hashtag#FMIndustry hashtag#BMS hashtag#BuildingServices
FAHU
TFAHU
1. AHU – Air Handling Unit
Function:
Handles indoor air only. It recirculates air from inside the building, conditions it (cooling or heating), filters it, and supplies it back into the rooms.
Key Points:
Mostly uses return air from inside the building.
Limited fresh air.
Used in malls, offices, hospitals, airports.
Main job: temperature and humidity control.
2. FAHU – Fresh Air Handling Unit
Function:
Dedicated for fresh outside air. It takes 100% outdoor air, filters it heavily, cools it (or heats), and then supplies it into the building.
Key Points:
Takes only outdoor air.
Used where indoor air quality needs to be high.
Helps maintain oxygen level and positive pressure.
Often works together with AHU.
3. TFAHU – Treated Fresh Air Handling Unit
Function:
An upgraded version of FAHU. It not only cools and filters outdoor air but also dehumidifies and treats it to a higher standard before supplying.
Key Points:
100% fresh air.
Better filtration and moisture control than FAHU.
Popular in hot and humid regions like GCC countries.
Ensures fresh air with controlled humidity for energy efficiency and comfort.
hashtag#AHU hashtag#FAHU hashtag#TFAHU hashtag#HVAC hashtag#HVACSystems hashtag#FreshAirSystem
hashtag#BuildingManagement hashtag#MEP hashtag#MechanicalSystems hashtag#IndoorAirQuality
hashtag#FacilitiesManagement hashtag#FMIndustry hashtag#BMS hashtag#BuildingServices
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- X
- Other Apps
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