Questin about fresh watercooling

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gostap
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Location: South of Sweden

Questin about fresh watercooling

Post by gostap » Tue May 08, 2018 12:28 am

Hi;

I have a Mercruiser 260 that I want to install fresh water cooling. Does anyone know if it's possible to use a brazzed plate heat exchanger instead of the more common tube exchangers?

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NAMEngJS
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Re: Questin about fresh watercooling

Post by NAMEngJS » Wed May 09, 2018 7:27 am

It should be possible, as they operate under similar thermodynamic principles, the concerns will be two things:
1) does the heat plate heat exchanger cool the circuit effectively. The vendor should sell you a product that meets those needs but best to make sure. And to make sure that it fits inside the envelop of the engine compartment.

2) Pressure losses through the system. With a closed loop system you will have 2 pumps, one for the sea (lake, river, ect) water and one for the jacket water system for the engine (freshwater cooling medium) plate exchangers have much higher pressure losses for the system compared to tube exchangers so the pumps would have to be sized up and will in turn will be more expensive (propbably) and require more energy to run them.

You may have to do some arm twisting but the vendors should have this data available for you and you can determine which option makes the most sense for you.
-Juan Suarez

All men dream, but not equally. Those who dream by night in the recesses of their minds, wake to find that it was vanity: but the dreamers by day are dangerous men, for they may act on their dreams with open eyes, to make them possible.

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gostap
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Joined: Wed Jun 07, 2017 3:25 pm
Location: South of Sweden

Re: Questin about fresh watercooling

Post by gostap » Thu May 10, 2018 2:34 am

thanks a lot for answer, maybe better to use a tube-exchanger..

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