Heat exchanger power

[beec]

Hello,

I have no experience with the calculation of heat exchangers, but I need to know the nessecary power (in kW) of a heat exchanger fed with plant steam and heating up softened water with the following conditions :
flow : 4 m³/h
Tin : 10 °C
Tout : 60 °C

Can somebody give some formula's ?

THX,
Bert.

 

[phex]

try this:

http://www.chemical-engineering-design.com/Thermodynamics/Heat Exchanger.htm

hth,
chris

 

[TD2K]

The formula you want:

Q = m Cp dT

m is the flowrate, kg/sec
Cp is the heat capacity, about 4.2 kJ/kgC
dT is the temperature change of the water, deg C

Q is then the heat load, kJ/sec or kW.