E-book Marine refrigeration

[Peter_1]

An old e-book about refrigeration
http://www.maritime.org/fleetsub/refrig/chap1.htm
Below each page is the link to the next chapter

[Feeze]

Thanks Peter_1.
Just had a quick look. Your right, it is a bit dated- R12 system. Should make interesting reading though.

[THERMALBLAST]

Can anyone tell me why Marine AC and Refer plants are always belt driven ?

[nike123]

Can anyone tell me why Marine AC and Refer plants are always belt driven ?

Not always, but mostly.
Reason is that it could be driven by main motor!

[Peter_1]

Main voltage onboard is not always the same as on land. The 240 VAC or 220VAc is limited for small appliances.

[MasterCree]

Most marine generators produce 3 phase power thus making it more efficient to run a 3 phase motor belt driven system. We use the same systems on our scallop boats here in the northeast!

[shooter]

belt drive is only used on reciprocating compressors because the max rpm is lower as a normal electric motor can do, however the newer screw compressors are always direct, and some even have a gear inside to make more revs.
Yes we also have some direct driven by main engine on a trawler, with a coupling in it.
so not true about belt drive same as on land.
Even big 12 cilinders are belt driven.

[D.D.KORANNE]

Good link for the marine application ;