In their plant or clothes cleaning area, almost every dry cleaner uses Evaporative Coolers, or Swamp Coolers as some refer to them. They could not afford to use refrigerated air conditioning. Hundreds of thousands of BTUs of heat are emitted into the work area by their steam boilers. Using air conditioning to eliminate this much heat would cost thousands of dollars per month. As a result, the Dry Cleaner’s work area should have an exhaust fan capable of performing a full air exchange every 1 1/2 minutes. Let me send you an example to assist you in determining the proper exhaust fan size for your Cleaner. For more info read about it
Let’s say you rent a 25-foot-wide by 80-foot-deep space in a shopping centre. This lease area has a gross square footage of 2,000 square feet. In most cases, the front sales room is heated and cooled. Then, from the 2,000 sq. ft., subtract the 375 sq. ft. sales field, which is 25 feet wide by 15 feet deep. This leaves you with a total of 1,625 square feet. The boiler room measures 10 feet by 10 feet (100 square feet) and the bathroom measures 6 feet by 6 feet (36 square feet), for a total of 136 square feet. Normally, the cooled area is overlooked.
This gives you a total of 1,489 square feet of exhaust and cooling space in the work area. You should calculate from the floor to the roof deck to determine the cubic feet of the work area. Since I never recommend adding a ceiling in the work room, I tell roof deck. Multiply the 1,489 square feet by the 15 feet between the floor and the roof deck to get a total of 22,335 cubic feet of area to exhaust. The total number of cubic feet of air to extract per minute, or the CFM, is calculated by multiplying 22,335 by 12 (the number of minutes per air change). most popular exhaust fans used in dry cleaners.