Cooling water from 45deg to3deg

[tjk2007]

Kindly give some details.

I have to cool the water (20000 Ltrs) in a tank from 45◦C to 3◦C. I have taken 4 recirculation in a PHE ie.5000 LPH and ∆T is 42◦C.The chilled water gets mixing with tank. It is a closed system. Can I know the temperature of the water in the tank after First circulation? & Second Circulation

Regards,

T.Jeyakumar.

[NoNickName]

Just ask for a special evaporator with extremely high amount of baffles and set up the system to accept a high SSH, including a TXV with MOP

[botrous]

Kindly give some details.

I have to cool the water (20000 Ltrs) in a tank from 45◦C to 3◦C. I have taken 4 recirculation in a PHE ie.5000 LPH and ∆T is 42◦C.The chilled water gets mixing with tank. It is a closed system. Can I know the temperature of the water in the tank after First circulation? & Second Circulation

Regards,

T.Jeyakumar.


Dear sir . . .
For an easy way to estimate the tempretur of the tank after the first circulation calculate the outlet tempretur of the PHE that do the equilibrum formula :

you have 15000 L at 42 degrees
Assume that the 5000 circulated litters and the 15000 in taank L will be at a final tempreture 'X'

the equilibrum equation gives :

m tank x c x (42 -X) = m circulated x c (X - leaving tempreture)

assume that 1 L = 1 kg (in reality this varies with tempreture)

15000 x (42 - X) = 5000 x (X- leaving tempreture)

and you find X.

Please note : this is totaly approximative calculation.

IF you want more precise result you will have to work on integrals using the dm mode.

Respects and regards