Pressure loss through electric heater

[vishalrb]

sir,

I am trying to calculate pressure loss through rectangular vertical electric heater. air is flowing through heater is 1000 SCFM and temerature increase is from 80 F to 1600

if any one have any formula to calculate pressure drop in this condition. please help me....

Thank you

 

[STYMIEDPIPER]

Is delta t 1520 deg F ??

 

[STYMIEDPIPER]

I did not see your other post until after I had submiited response
You can try posting in the 'HVAC/R Enginnering' forum

 

[vishalrb]

yes sir DT is 1520 F

 

[dcasto]

just a plain ol pressure drop calculation will work. Just break the exchanger up into small pieces with an average temperature of each section to get velocity in that section and from velocity you get pressure drop.

 

[vishalrb]

can one give me formula for that or can you tell me where i can find ..

 

[dcasto]

Here is a simple one:

http://www.engineeringtoolbox.com/darcy-weisbach-equation-d_646.html

If the electric element is finnned, most vendors will have there own data to calculate the pressure drop. Otherwise, this should get you on your way. Google pressure drop for other sources.