expansion valve for evaporator

hello everyone
how can i select the correct expansion valve for the water cooling tank evaporator

system 1
lenght for each steel pipe 6m
thickness 3mm
OD 1 1/4''
total pipe in parallel 30

system 2
lenght for each stainless steel 316L pipe 6m
thickness 1.5mm
OD 1''
total pipe in parallel 20

thanks in advance....

First you need to know the refrigerant capacity and the operating conditions. The capacity depends on the temperatures of the fluids, mass flows,...give me thermodynamic data.

actually i am electrical engineer but new to refrigeration industry, what is mean by thermodynamic data. Could u pls explain?

i need to cool down the acid in aluminium industry,

acid tank 4ft wide, 25ft lenght, 9ft deep
acid temperature 30dec
i need to cool down to 20dec

if for the 6m, 1 inch, 1.5 thickness stainless steel 316L pipe

1.how long that i need for the evaporator design
2.the expansion valve and the total cooling capacity?

thanks for reply.

First at all I need the sensible specific heat (cp) kJ/kg.K on SI units is needed or in another units, then I make the conversion. Also I need to know the time you need yo cool from 30 to 20ºC.

I would suggest that you employ a refrigeration engineer, to design and build the system.

get yourself coolpack from denmark.