Otto, all, this trying to figure out the heating rate for the motor and
tank is a knotty problem. Because there is copnvected heat flow from
the motor, radiated heat flom from the motor, ditto for the tank and all
the plumbing. What I am trying to do ic come up with a kind of rule of
thumb so thoise who may be considering such the notion of radiator in a
water tank, have some fairly good idea of what they need. Maybe based on
hp, motor size, etc. So the thermostat question was one to help me focus
on the *how* the block and water heats. More later,
thanks fo replying and that's for everybody...
mayf
Askotto@aol.com wrote:
> Hi Mayf
>
> The thermostat opens slowly and does not flap open all of a sudden
> like a mouse trap closes. The opening speed is of course dependant on
> the water temp rising rate. Dropping a thermostat in boiling water
> won't be a true test of opening speed as this doesn't assimilate your
> real world application where the water is heated more slowly. From
> what I've seen in the heated water on the stove test, starting with
> cold water, is they open fully in about 10 seconds from the time they
> start to open. You could always test your thermostat as recommended
> before so you are dealing with closer to actual opening times.
> Remember, the water in your engine block has been pre heated before
> you make your run. Say you typically preheat the block water to 140
> degrees before you make your run. Take what ever temp you heat to and
> while measuring the thermostat opening time in the pan, start the
> stopwatch when the water in the pan reaches your preheat temp. Stop
> the clock at full opening and that is your opening time for your
> calculations. Hope this helps.
>
> This is only my opinion from experience so temper the results with
> scientific proof before applying.
>
> Otto
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