Re: Heating a calorifier from the engine

Sorry I cannot offer any help of this subject, but I am curious as to what
temperature the engine cooling water must reach to be of any use in heating
a calorifier.

My Bukh DMV10 engine runs at 60 deg C which is within the official engine
spec and is the temperature rating stamped on the thermostat housing and is
consistent with the reading on the temperature gauge. I tested the
thermostat in a saucepan of water to confirm it opens and closes correctly.
The system is open vented so is not expected to reach high temperatures
under normal working conditions.

If a calorifier is to be fitted then I assume you would need a much hotter
engine with probably a pressurised cooling system like on a vehicle. I do
not intend to try fitting one on my boat but cannot see how it would ever
work if I did.

Graham Brooker



"jolly bargeman" <colinwingfield@xxxxxxxxxxxxx> wrote in message
news:1125395380.105652.183750@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>I have an aged but reliable BMC 1.5 engine, marinised by Calcutt Boats
> some 22 years ago.When fitting a central heating system, I opted for a
> twin coil calorifier to obtain domestic hot water from the engine
> circuit when cruising. Although the Hot Water tank gets plenty of HW
> when the central heating boiler is on, I struggle to get hot water from
> the engine alone. I have taken a supply to the calorifier from the hot
> water hose that leads to the keel cooling tank, with a return coming
> from the calorifier and going into the return hose. Is this correct or
> could I be getting an airlock. Is there a better way of doing this?
>
>
> Jolly Bargeman
>


.

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