I have a guy that approached me about some refer work on a shrimp boat he is building. he bought a used brine tank(no condensing unit included)and would like me to install a condensing unit for him. The tank is to be filled with a brine solution and kept a -6 degrees. When the shrimp are caught they are put in brine tank and froze before they are put in a holding freezer at -10 degrees. My question is
The brine tank has a 6 circuit evaporator with 6 Danfoss txv's (TX2 bodies and #04 orfices R-22 refrigerant)
If i am correct, these valves are rated for 2.25 tons each.
That would equal 162,000 btu =13.5 tons of refrigeration.
I want to switch to R-404a valves and condensing unit.
If i installed 6 2 ton valves and sized the condensing unit for a -10 degree evap. temp. the unit would have to be around 30 hp? Damn that is alot of refrigeration for 1 tank??? Has anybody worked on these brine tanks before? Are my calculations correct?
Any advice would be appreciated!!