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  1. pbmechtech

    Replace exhuast fan with ERV?

    Thanks for your input. The building is a small local airport.
  2. pbmechtech

    Replace exhuast fan with ERV?

    You are correct. I am removing the exhaust fan altogether. Also replacing the existing FCU and will connect the return side to the existing inlet duct of the current EF that is to be removed. Then will add an ERV to for ventilation air instead of using the FCU O/A duct/ EF combo.
  3. pbmechtech

    Replace exhuast fan with ERV?

    I am upgrading a building’s HVAC equipment with new equipment. There is currently a 5000 cfm fan coil unit supplying conditioned air to the space and a 5000 cfm exhaust fan returning the air back to the fan coil and exhausting a certain amount of air to the outdoors. The return side of the fan...
  4. pbmechtech

    Snow melt coil design

    I am trying to design a heating coil for a snowmelt pit in a hockey rink. Using the Zamboni specification, it says that one Zamboni can hold 100 cu.ft. of snow. We have two rinks and the Zamboni will clear each rink once an hour, so that gives me 200 cu. Ft of snow I have to melt every hour. 1...

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