Outlet temperature of HX

[farhan07]

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? 

[RichardJ]

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

[farhan07]

Thanks, Richard.

[Fred_Kohlhepp]

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

[Fred_Kohlhepp]

available solar heat flux

[farhan07]

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