This week we started on a large, unique project: two complete RSW systems inside a 24 ft cargo shipping container. This is designed for simplicity. The container can be lifted onto the deck by a crane, secured, and the water and power are hooked up. The controls will be in the container. By putting the refrigeration system on the deck, it frees up precious space below deck. Then when the ship changes from fishing to crabbing, the container is removed, allowing the full deck space for crab pots.
Based on a new cargo container, it will be retrofitted with a man door on the side. A steel I-beam (shown above) runs the length of the space along the center of the roof. This supports a wheeled trolley to bring the heavy equipment inside, because there is no way to use a forklift. Doors and soft patches (access hatches) allow access to all sides of each piece of equipment for servicing.
The refrigerant will be ammonia. At Teknotherm we support all types of refrigerant but we are the ammonia specialists. With the increasingly broad bans on so many refrigerants, ammonia will be one of the few left standing in a few years. Because it is not ozone-depleting nor does it contribute to global warming, and is an excellent refrigerant, it is really the best choice out there.
When finished this unit will consist of two 80 ton refrigerated seawater systems using Bitzer screw compressors and 100 hp motors, with a complete ventilation and ammonia leak sensor system. And of course it will use our proprietary TeknoLogic automation and controls for ease of use. Our engineers and technicians can see exactly what is going on with every part of the system and diagnose any problems from the comfort of our Seattle office, no matter where in the world the boat is, as long as the boat has an internet connection.
This is a beautiful solution for the 155 footer’s seasonal refrigeration needs. In the coming weeks I will post in-progress photos of this fascinating and unique project.