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  • Users: ChaChaMan
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  1. ChaChaMan

    Face and By-Pass The DX Evaporator Coil For Dehumidifcation

    I have been told if you By-Pass some air around the avaporator coil, you will dehumidify the air while not needing to reheat it. What is more, the fact that you reduce the air flow through the evaporator coil, you reduce the suction pressure of the cold gas, thereby reducing the evaporating...
  2. ChaChaMan

    Heat Pump - Hot Gas Reheat - Deumidification

    Hello, Is it possible, with a heat pump, to do a Hot Gas Reheat, by diverting some of the Hot Gas from the Condensor to a reheat Coil. The goal is to respond to a call for dehumification without further cooling. Please see attached diagram. Equipment: Heat Pump : (New-To Be supplied)3 Ton, 2...
  3. ChaChaMan

    Double Plenum

    I came up with this arrangement for mechanical components of an Air Handler (Please see attachment) Plenum Fan + N-Coil +Discharge Plenum. Following everyone's suggestions, 1.I placed the N-Coil after the Fan Motor so as to remove the risk of a damp Fan-Plenum environment. 2.I use a Discharge...
  4. ChaChaMan

    Modulating electric duct heater with SCR and Thermostat.

    Does anybody have experience using electric duct heaters that can modulate using an SCR. This is supposedely an improvement to staging. I am proposing a 12 KW duct heater in a residence. I wasn't sure if I sould divide it in 2 or 3 stages or specify modulation using an SCR. My questions are ...
  5. ChaChaMan

    Plenum Fan

    Never used this type of blower before, I was going to use a DWDI blower. I am very concerned about system effects. Does this 1200 cfm blower configuration make sense to all those with experience with this type of blower ? (See attached pic)
  6. ChaChaMan

    Rule of thumb

    I know already as a rule of thumb you need 450 cfm per ton of cooling. How many cfm per 1KW (3412Btu) of heating ? Thx in advance !

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