Glycol water coil - GPM calc?

[xpsboy]

Cooling Cap = density x water flow rate x delta T

Or

(Short cut) BTU/hr = 500 x GPM x dT

30% propylene, EAT: 10 LAT: 98.2 EWT: 170 LWT: 150

What will be the density value to get the GPM?

Thank you in advance.

 

[sspeare]

You might put engineeringtoolbox.com on your "favorites" list. See the attached link to prop glcol/water mix properties.

 

[TJOrlowski]

Also, you're not going to get the same amount of BTU's/Hr out of 30% PGLY as you would out of 100% water with flowrates and DeltaT being equal. Heat capacity of your glycol solution is lower than water (by more than 5%).

-TJ Orlowski

 

[IRstuff]

"density x water flow rate x delta T"

You're missing the specific heat here.

TTFN

FAQ731-376
Chinese prisoner wins Nobel Peace Prize

 

[imok2]

Go to

http://www.engineeringtoolbox.com/erthyleneglycol

 

[imok2]

Correction
Go to

http://www.engineeringtoolbox.com/

Ethylene glycol

 

[willard3]

Volume and pressure drop will increase as glycol specific heat is lower and the kinematic viscosity is higher.

This information can be had on Dow or glycol mfg's website.