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Old 02-25-2017, 12:33 PM   #35
sunchaser
Guru
 
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48 (sold)
Join Date: Apr 2008
Posts: 10,186
Quote:
Originally Posted by Nomad Willy View Post
Sunchaser,
This makes no sense to me at all. The coolant is artificially kept higher than it would normally be by the thermostat. The oil has no thermostat and most of the time it sits in the bottom of the sheet metal oil pan w large area exposed to ambient cool air. I don't think I do "get it".
The temperatures I gave are measured with an IR gun on the oil pan. The plate exchanger was sized by the engine manufacturer to provide adequate oil cooling at full load. Next time I'm on vessel I'll send you some pictures of what is happening.

The first time I saw a plate exchanger for cooling diesel engine oil was about 50 years ago on a Cat loader. Plate exchangers for heating and cooling are used in all sorts of industrial applications going back over a century.
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