water flow

[jebar]

hi all I need anequation to calculate the flow of chilled water for 1 TR (24000BTU) to air cooled water chiller,please.

[frank]

The equation is Q = m x c x dt

Where:
Q = Refrigerating capacity
m = mass flow of hydraulic fluid
c = specific heat capacity of hydraulic fluid
dt = the temperature difference of the hydraulic fluid

What water flow and return temperatures are you expecting, and will you be using glycol in the hydraulic fluid?

[dougheret0]

Sorry, but this is in IP units, as I am from the U.S.

Frank is pointing out that the required gallons/minute depends on the desired temperature drop of the chilled water temperature. General practice is to design for 10 degrees F. Therefore, the formula in IP units is:

gallons/minute/ton = 12,000BTU/hr*(1/delta T)*gal/lb*(lb*degF/Btu)[specific heat]*hr/min

For water, and 10 degrees F delta T, the result will be 2.4 gpm/ton

[dougheret0]

Frank is pointing out that the required gallons/minute depends on the desired temperature drop of the chilled water temperature. General practice is to design for 10 degrees F. Therefore, the formula in IP units is:

Sorry, but this is in IP units, as I am from the U.S.

gallons/minute/ton = 12,000BTU/hr*(1/delta T)*gal/lb*(lb*degF/Btu)[specific heat]*hr/min

For water, and 10 degrees F delta T, the result will be 2.4 gpm/ton