Paul Keinanen wrote:
The rest of the garage will get very hot and if the closet walls are
light, leak back into the closet, requiring more air conditioner power
to remove it etc. The temperature of the rest of the garage will
continue to rise, until the temperature is sufficiently _above_ the
outside temperature and sufficient amount of thermal energy will flow
_out_ through the garage external walls.

******* I am assuming the operator will put the garage door up
in the summer and down in the winter..... This ain't rocket
surgery....


Two ways to avoid this problem, one is to let the closet air
conditioner pump the heat to the outside air or if the heat is pumped
into the rest of the garage, at least open the garage door and use
sufficiently good isolation in the closet walls to keep the air
conditional power requirements at a reasonable level.

*** Ahhh,... I see the idea occurred to you, also........ I know that
the
OP doesn't want to knock holes in his garage wall for a vent,
otherwise he would have just put it in a window or access door and
not bothered to post here for our whacko solutions ... :))))


After all, air conditioning is a similar problem as thermal management
in any semiconductor systems, which use the analogies with
resistances/conductances (thermal isolation/conduction) and
capacitances (specific heat x mass).

***** Wow !! I am still reeling from the concept of a $80 air
conditioner
being used in the same sentence as : " the analogies with
resistances/conductances (thermal isolation/conduction) "
Whew !! Maybe this IS rocket surgery !!! :))))))

Andy W40AH ( LPE ( licensed professional engineer ) )