I need to assemble a cold plate system for a marine freezer for the boat I am building. I have purchased 3 used cold plates aproximately 18" x 24" x 4" that appear to be in good condition. They all have evaporator valves with them. I am aware that I must change the medium inside the cold plates for the freezer application. I have no experience with refrigeration systems, so I will need a lot of help. The goal is to freeze down the plates once every
24 hours or more. The heat load will vary widely in this application. I will need an evaporation temperature around -40 for the medium I wish to use. I would like to also use a raw water cooled condensor for space reasons. I also want to mount the machinery in the engine space which is physically separated from the evaporators by about 20'. I need help in sizing/choosing the compressor, the accumulator and the refrigerant at least.. Should I use a controller, unique valving or other components that I have not mentioned? Could the system be designed to be self regulating? It would be better if I do the machinery installation, as I know the boat, but I will have the system professionally charged and tested. I know no one with this experience, so any advice is welcome. Effectively, I am looking for a reliable design. Thanks in advance, Steve- posted
15 years ago