[TriLUG] OT: thermodynamics of A/C question

[Joseph Mack NA3T]

On Tue, 26 Jun 2012, Joseph Mack NA3T wrote:

> Even motorcycle engines are water cooled nowadays, mainly 
> to increase engine life AFAICT.

The increased life comes about because the head/valves stay 
at much the same temperature under different load and hence 
the clearances remain the same. The parts aren't tight 
fitting under once load regime and rattling under another. 
Wear is minimized and lubrication simpler.

This doesn't directly apply in the A/C case. What does apply 
is that applications that have historically been air cooled 
for simplicity of construction, have bitten the bullet of 
complexity and are water cooled now for increased 
life/reliability.

Joe

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Joseph Mack NA3T EME(B,D), FM05lw North Carolina
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