Results 1 to 3 of 3
  1. #1
    Join Date
    Mar 2007
    Location
    UAE
    Age
    42
    Posts
    78
    Rep Power
    18

    Cooling water from 45deg to3deg



    Kindly give some details.

    I have to cool the water (20000 Ltrs) in a tank from 45◦C to 3◦C. I have taken 4 recirculation in a PHE ie.5000 LPH and ∆T is 42◦C.The chilled water gets mixing with tank. It is a closed system. Can I know the temperature of the water in the tank after First circulation? & Second Circulation

    Regards,

    T.Jeyakumar.



  2. #2
    Join Date
    Mar 2006
    Location
    Merate (LC) - Italy
    Age
    52
    Posts
    2,554
    Rep Power
    24

    Re: Cooling water from 45deg to3deg

    Just ask for a special evaporator with extremely high amount of baffles and set up the system to accept a high SSH, including a TXV with MOP
    Last edited by NoNickName; 02-09-2008 at 09:20 AM.

  3. #3
    Join Date
    Dec 2004
    Location
    LEBANON
    Age
    44
    Posts
    861
    Rep Power
    21

    Re: Cooling water from 45deg to3deg

    Quote Originally Posted by tjk2007 View Post
    Kindly give some details.

    I have to cool the water (20000 Ltrs) in a tank from 45◦C to 3◦C. I have taken 4 recirculation in a PHE ie.5000 LPH and ∆T is 42◦C.The chilled water gets mixing with tank. It is a closed system. Can I know the temperature of the water in the tank after First circulation? & Second Circulation

    Regards,

    T.Jeyakumar.

    Dear sir . . .
    For an easy way to estimate the tempretur of the tank after the first circulation calculate the outlet tempretur of the PHE that do the equilibrum formula :

    you have 15000 L at 42 degrees
    Assume that the 5000 circulated litters and the 15000 in taank L will be at a final tempreture 'X'

    the equilibrum equation gives :

    m tank x c x (42 -X) = m circulated x c (X - leaving tempreture)

    assume that 1 L = 1 kg (in reality this varies with tempreture)

    15000 x (42 - X) = 5000 x (X- leaving tempreture)

    and you find X.

    Please note : this is totaly approximative calculation.

    IF you want more precise result you will have to work on integrals using the dm mode.

    Respects and regards
    Engineering, sciences, math, physics and my brain will generate "not responding " soon

Similar Threads

  1. Cooling down the water in a 1000 liter container
    By Joep Hogenhout in forum Technical Discussions
    Replies: 29
    Last Post: 21-04-2009, 01:27 AM
  2. pure water from air
    By Lc_shi in forum New Technologies
    Replies: 32
    Last Post: 26-02-2009, 01:25 PM
  3. Cooling tower evaporation, blowdown, makeup and cycles
    By miltbeychok in forum Industrial
    Replies: 5
    Last Post: 14-10-2005, 06:34 PM
  4. Cooling tower evaporation, blowdown, makeup and cycles
    By miltbeychok in forum Fundamentals
    Replies: 0
    Last Post: 13-10-2005, 05:14 AM
  5. Building a wine cabinet
    By Rory in forum Technical Discussions
    Replies: 38
    Last Post: 13-07-2004, 08:28 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •