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Slowing blowers on a chiller coils allows the air to be colder and remove more moisture. Slow the air flow to minimum necessary to cool the space, reduce fresh air to minimal amount acceptable, and set the chiller temperature as low as possible. These are the easy things. Most consider 20 cfm of fresh air as the minimum for smoking/15 cfm for nonsmoking.
The requirement is still in place to keep the room at a target of 50% RH to reduce the risk of nosocomial infections. To keep the room at 50% relative humidity with the air temperature at 60-64F will require the air to be at a dew point temperature of 40-42F when delivered to the room.With the typical hospital having chilled water at 42-44F, this new requirement is impossible to achieve with what equipment is in place.t recommends the operating room air temperature be 68-75F with a 30-60% relative humidity. To get this condition the air flow is dictated by a recommendation of 15 total air changes per hour, ACH, with 3 air changes per hour with respect to outside air.