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farhan071-Visitor
1-Visitor
November 6, 2017
Question

Outlet temperature of HX

  • November 6, 2017
  • 5 replies
  • 3360 views

Hi,

Could anyone help me out regarding calculation of outlet temperature of parallel flow tubes heat exchanger design? In my case, 500kW/m^2 is peak flux on surface of 20 tubes and the outlet temperature is less than 200c.so,  what would be the key factor in this scenario to achieve desire temperature, e.g. tube dia, fluid velocity, mass flow rate or any other factor? 

5 replies

R
RichardJ19-Tanzanite
19-Tanzanite
November 6, 2017

This is a forum for Mathcad, and that is really not a Mathcad question. You might be better off asking on these forums: Engineering tips

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    farhan071-VisitorAuthor
    1-Visitor
    November 6, 2017

    Thanks, Richard.

     

    F
    Fred_Kohlhepp23-Emerald I
    23-Emerald I
    November 6, 2017

    heat exchanger.PNG

     

    http://web.mit.edu/16.unified/www/FALL/thermodynamics/notes/node131.html

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      Fred_Kohlhepp23-Emerald I
      23-Emerald I
      November 7, 2017

      available solar heat flux

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        farhan071-VisitorAuthor
        1-Visitor
        November 7, 2017

        Thanks.

        About available solar heat flux,

        DNI of any particular area varies with time so i am considering peak average flux 800w/m^2. The allowable peak flux for various HTF is different and in my case,considering water as HTF so 0.2MW/m^2 is valid. If you have solar field of 700 heliostats with surface area of 7.2m^2 and concentration ratio of around 583 then the total allowable peak flux of receiver area of 6m^2 is 500kW/m^2. Thanks 

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