Will this increase the Coefficient of performance of my refrigerator?

[questionmonkey123]

If I orient my refrigerator such that the condenser coils at the back are facing a glass door (least insulation in room, cold outdoors) will CP increase? CP=Qc/(Qh-Qc) so Qh-Qc will be smaller thus CP larger. Could this damage refrigerator?

 

[russ_watters]

Yes it would increase the efficiency, no it wouldn't cause damage. But it would block the door.

 

[sophiecentaur]

no it wouldn't cause damage

Better than that; the compressor will last longer because it won't be running quite so much.
However, every Joule of energy that you put into the fridge turns up as some extra heating for the house. In winter, the fridge is doing its bit and largely costs nothing to run (if you care to look at it that way). In summer, your glass door trick could be of benefit, particularly if you use A/C.