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Thread: air agitation of glycol?

  1. #1
    Join Date
    Jan 2003
    Location
    Palau
    Posts
    1,592

    air agitation of glycol?

    I'm commissioning a used German system with a 1000 liter glycol reservoir. The refrigerant flows through a set of large plates suspended vertically in the tank. there is a regenerative blower set up for air agitation in the tank to keep glycol mixed. Anyone see this setup before? What would the advantage of this over a recirculation pump be? And wouldn't it tend to warm the glycol with warm air and cool the room in which it's installed? I'd like to rip out the blower and install a recirculation pump, but someone knew better than me to design it this way. Comments?
    Phillip Kelm--Palau Brewing Company Manager--
    Worldwide Brewery Installations
    www.GitcheGumeeBreweryServices.com

  2. #2
    Join Date
    Jun 2005
    Location
    Greensboro, VT
    Posts
    190
    I used to work on a Kaspar Schulz system in Denmark - and we had a similar reservoir. However, it was an ice bank (ie. water with frozen refrigerant coils...recirculated..) rather than a standard glycol chiller...
    Is this similar to what you are looking at?

  3. #3
    Join Date
    Oct 2003
    Location
    Santa Rosa CA USA
    Posts
    962
    Insightful idea of swapping the blower for a recirc pump! It may have not been designed for the warmer climate you are in, but in reality I am curious how much heat the air would actually carry, might not be so much.

  4. #4
    Join Date
    Jul 2005
    Location
    Auburn, WA
    Posts
    222
    It sounds like your system is an ice builder that they may be trying to operate at lower temperatures and have added glycol to accomplish.

    Below is from a website on ice builders:

    Air agitation of water in the unit provides:
    1) even distribution of ice melting during consumption period and
    2) uniform formation of higher density ice during the freezing recovery phase.


    Perhaps since you are not trying to build ice, the air agitation isn't as critical. Anything to help encourage heat exchange; via air agitation or a circulation pump, will definitely help.

    Good Luck,

    Jim

  5. #5
    Join Date
    Jan 2003
    Location
    Palau
    Posts
    1,592
    Thanks for the help! Definitely don't need to build ice, but glad to know what one looks like! Appreciate your help. I guess I've got a used blower for sale!
    Phillip Kelm--Palau Brewing Company Manager--
    Worldwide Brewery Installations
    www.GitcheGumeeBreweryServices.com

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