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Chiller Roller

  1. Jul 22, 2009 #1
    I have a dough passing through a pair of rollers equipped with internal circulating chilled water.

    given: mass flow rate, specific heat and temp in/out of the product
    diameter of the rollers, its material.
    temp. in of the chilled water.

    problem: cooling load needed for the chiller.
     
  2. jcsd
  3. Jul 22, 2009 #2
    is the equation right?

    Qwater = Qconduction + Qdough + Qloss
     
  4. Jul 22, 2009 #3

    russ_watters

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    Staff: Mentor

    You didn't mention a flow rate for the water, so I'll assume you don't have it.... But it is the same for the dough as it would be for the water: mass flow times specific heat times delta-T.

    Figuring out if there is loss and how much would be difficult, though...
     
  5. Jul 23, 2009 #4
    I guess I'll just adjust the water's flow rate and discharge temperature. the main problem here is the cooling load.
     
  6. Jul 23, 2009 #5
    is there any software that can simulate this?
     
  7. Jul 23, 2009 #6

    russ_watters

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    Staff: Mentor

    Not really, the heat transfer of dough doesn't seem like a very common application.

    Is this machine custom manufactured? Does the vendor have such information?
    If you do a few trials, you'll have enough information to construct your own model.
     
  8. Jul 24, 2009 #7
    i mean, i can model it as a slab passing through a pair of rollers factoring in its specific heat, etc.
     
  9. Aug 5, 2009 #8
    uppers
     
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