Re: A/C recirculation/warm air from dash ponderings..

["R. Cummings" <cumm@flash.net>]

At 11:51 AM 3/12/99 -0500, you wrote:

>
>Obvious solution -- put the evaporator downstream from the heater core,
>then when it's cold, you're blowing heated air over the evaporator, so
>it won't ice up, just pull the moisture out of the air. Then you can 
>use the "A/C" to dry out the car even at 10F.
>
The heater core is downstream of the evaporator so you can dehumidify the
air first and then warm it up. This provides warm dry air in moderate
conditions. It would get awfully cold if there were no provisions for reheat. 

>   Not all systems are cycling clutch but all have a device to prevent
>   operating below freezing. Hence, the same problem with differential
temperature.
>
>The A4 is (according to my salesdroid) equipped with a variableschmariable
>compressor which is always on, but load-varying, or some such thing.
>
>					-RDH
>
You're probably right but there is still a low ambient shut off device in
the system. I understand MB has a system with no clutch but that is the only
one I have heard about.

Bob Cummings
87 Coupe GT