It is just that simple. Dole Refrigerating Co. will help you estimate the hardware needed for your next truck body or to retrofit your current body. Visit their website www.doleref.com for more information.

What is Marine Refrigeration?  The major parts of this refrigeration system include the refrigerant, a compressor, a condenser, and plates inside the refrigeration box.

The compressor in the marine refrigeration system is part of a closed loop pumping refrigerant through the system and through the evaporator plate in the ice box. The compressor has two sides- the High side or discharge side. The discharge side pumps refrigerant into the condenser. The cold plates in the fridge space have either expansion valves that separate the low and high pressure sides of the refrigeration system.

The refrigerant in the compressor starts as a gas. The compressor condenses the refrigerant gas, from low pressure to high pressure between 100-150 psi. When the pressure is increased like this its temperature is raised significantly. This hot high pressure refrigerant is then fed to a condenser, where it is cooled and turned into a liquid. The condenser is cooled by either air or water. The refrigerant is now a cool high pressure liquid and is fed to an evaporator plate inside the boats refrigerator box.

The evaporator plate in the marine refrigeration system takes the refrigerant from the condenser and then boils it rapidly & evaporates it back to a gas, at a very low temperature. This transformation soaks up vast amounts of heat from the evaporator which in turn eliminates heat from the insulated refrigeration box- lowering its temperature. The BTU is the amount of heat eliminated. From the evaporator plate the refrigerant is returned to the low side of the compressor, to start the process again.

Evaporator or Holding Plates

Marine refrigeration systems use either an evaporator plate or a holding plate in the boat’s refrigeration space or freezer space. Each plate works in a different way to draw heat from the boats refrigerator and ice box area.

To find out more on Marine Refrigeration contact us today.

The advantages of using the Eutectic Blower Unit system over the more passive Holdover Plate system is the thermostatic control and even distribution of air throughout the application. Dole currently produces three lines of Eutectic Blower Units with several options available for each.

For more information on these systems, catalogs are provided below or contact Dole.

With hybrid refrigeration units, moving parts are not needed. The Engine drives the generator only when the reefer is in motion.

It is this generator that generates the power to run the refrigeration system’s components, such as the compressor. With a hybrid refrigeration unit, AC power is used when a reefer is parked. Conventional refrigeration units can also be converted to Hybrid Refrigeration units. An electric motor would need to be added to the unit to take over the job of providing the power that the diesel engine would normally provide.

Many years of excellent service and the increasing growth of DOLE users have continued to prove DOLE as one of the leaders in mobile cold plate truck refrigeration equipment. There is no substitute for experience, dependability and value.

Dole’s Eutectic Holdover Plates are the answer for mobile refrigeration and are the alternative to mechanical refrigeration systems. Dole’s holdover plates are designed to maintain a constant temperature, or holdover, throughout the course of a day. The plates are then “recharged” by connecting them to a condensing unit. After charging, the holdover plates are ready to maintain refrigerating temperatures for an entire work cycle.

]]> http://www.doleref.com/blog/what-are-holdover-plates/feed/ 0 http://www.doleref.com/blog/eutectic-cold-plates/ http://www.doleref.com/blog/eutectic-cold-plates/#comments Wed, 22 Jul 2009 14:45:07 +0000 admin http://www.doleref.com/blog/?p=3 Eutectic Cold Plates are one of the most reliable refrigeration systems available. Dole’s Eutectic Cold Plates provide the answer for mobile refrigeration and are a great alternative to mechanical refrigeration systems. Dole’s Eutectic Cold Plates are designed to maintain a constant temperature, or holdover, throughout the course of a day.

The plates are then “recharged” by connecting them to a condensing unit. After charging, the plates can maintain refrigerating temperatures for an entire work cycle. Dole’s Eutectic Cold Plates are designed and build with performance and economy in mind. Dole currently offers two holdover plate lines. Browse Dole’s two plate lines or contact Dole to see which Eutectic Holdover Plate is right for you.