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  1. punk_HVAC

    Room pressure calculation

    johncooling, Yes I understand your point of positive and negative pressure. I need some formula to understand how much positive pressure building will be holding?
  2. punk_HVAC

    Room pressure calculation

    Hi, I'm working on a project of HVAC design for day care facility with approx. total area of 13,200 sq. ft. and average ceiling height of 11.5 ft. As per heat loss/heat gain calculations, total air supply is 19,200 CFM which includes 5,140 CFM of outdoor air as per ASHRAE 62.1. Total washroom...

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