A heat exchanger, as the term is commonly applied, transfers heat between
liquids.



Technically, a "radiator" is not a radiator. A real radiator is what
you see on the floor of an old apartment building with no forced air
flow through it.

"As the term is commonly applied........"

Walk into your nearest auto shop this fall and ask to have your heat exchanger
serviced. You'll get more than a few strange looks.

Send a marine mechaninc down to your boat to change the zincs on your
"radiator"
and the wrench might sense this is a perfect time (and you're the perfect
client)
to recommend servicing the framus and the diogenator as long as he's aboard- it
will only run an extra $200.

If it takes a physics lecture to shore up a theory that "radiators and heat
exchangers are really the same thing" it doesn't, in the real world, address
the issues of this thread.

Those seem to have been:

1. Why don't we see radiators in boats?

schools of thought in response

a. Of course we do. I can show you hundreds of inboards with radiators

b. boats use a liquid to liquid heat exchanger rather than an automotive type
radiator to cool the engine.

c. There is no difference between an automobile radiator and a heat exchanger
on a boat.


If this were a multiple choice exam, I'd go with B. Thanks anyway, though.