Regenerative type Carbon Dioxide Removal System:

Environmental control remains today as one of the dominant concern in the design of most heating, ventilation and air-conditioning systems, especially for enclosed spaces. A planned control of the physical environment is hence required to avoid conditions in an enclosed space reaching intolerable levels. The intolerable conditions might be created due to several factors like fall in the oxygen content, excessive odor and increase in the carbon dioxide concentration.
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Air Tight Doors:

"Airef" make Air Tight doors are single/double wing doors to stop the advance of contaminated air into the protected area. The Air tight doors can be designed for an air tightness at a pressure of 2000 pascal. The doors are fabricated out of structural steel. The door frame is designed for easy installation in the reinforced concrete wall. Door hinges are provided with maintenance free slide bearings or roller bearings.
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Blast Proof Doors:

"Airef" make Blast doors are single/double wing doors to stop the advance of blast waves into the protected area. The blast doors can be designed for a long duration blast load resistance of upto 20 bar peak reflected over pressure. The doors are fabricated out of structural steel with a doorplate of solid homogeneous steel plate stiffened by I-beams/ribs.

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