> Don Dunbar wrote:
 >
 > Hi Paul and group,
 > Some months ago there was design figures posted for cooling of the

Rotary.

 > The subject was surface area and heat rejection.
 > I have looked in the old e-mail files but cant find this info.
 > Could it be resent to me.
 > Regards Don

 Can you narrow it down a bit Don? There have been a zillion messages
 on rotary engine cooling. Here is the heat balance and you might be able

to

 work from this.

 Paul Lamar

This is useful to me, Paul. Is there something similar that quantifies the
heat rejection in BTU's by horsepower? That info might be useful when I talk
to the radiator guys and try to explain to them that my cooling needs are
different than a drag racer.

Dick Gregory

As a rough rule of thumb for all ICE's one quarter of the heat in 
the fuel goes out the cooling system, one half goes out the exhaust
and one quarter comes out in the form of useful mechanical energy.
So the cooling systems in a 200 NP engine  must dissipate 200 HP or 
149,200 watts which can be converted to BTU per minute.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org