Question about calculating compressor power

[ysh1317]

Hi all, I am from Indonesia..
I'd like to cool a 500 litre water down to 3 degrees Celcius, how big of a compressor do I need? How many BTU? Roughly how much time needed to reach that temperature from, let's say, 32 degrees celcius?

Basically I wonder if there is a simple formula to calculate it?

Thanks, all answers are appreciate it.
If you dont mind, just email me at ysh1317@cbn.net.id.

[NoNickName]

Q = m cp dt
m = mass flow
cp = specific heat of water
dt = temperature gap

the mass flow is the quantity of water in time. Basicly, there's a difference in power to cool down 500 liters of water in 1 minute or 1 hour about that is 1 to 60.

Therefore, in metric units, for a cooling time of 1 hour.

Q = 500 Kg/h x 4.2 kJ/Kg K x 27 K = 56700 kJ/h = 15.75 kJ/s = 15.75 kW = 53.7 MBTU/h

[Magoo]

Well put and simply explained "nonickname ", at +3.0 ' C water I would recommend an icebank if not using glycol.

[mad fridgie]

Spot on "nonickname"