Fridge or feezer, patio door, soil, plants.
Control over heating by pumping the hot air into the soil, as in the SHS style greenhouses. Might need a second appliance as a heat batterie.
Maybe an A-frame or hoop house would better than a patio door.
Anyway, I googled fridge, reuse, and greenhouses, with no luck, thought I would ask here...

Could you flesh out the question a little? I don't understand what you're asking.

Rebecca Norman wrote:Could you flesh out the question a little? I don't understand what you're asking.

Er,good point!
Has anyone here reused a fridge as a a greenhouse?
Has any one used a fridge as a "heat battery" for storing thermal energy accumulated in the day for use overnight?
If so, what were the results? If not, what do you think of the idea(s)?

William Bronson ! As early as the 1st Mother earth news they showed plans for South facing ''Batch Water Heaters'' that used chest type freezers
laying on their sides and using a light reflective panel on the inside of the door - with the whole thing closed up at night (every night) by the operator
to provide an insulated storage and hot water in the morning !

I found lots of examples by Goggling ''Batch Water Heaters Pictures''

Certainly something much like this would convert easily into an insulated cold frame, making anything big enough to justify calling it a green house
probably would be a lot harder but a good cold frame should easily give you 5-6 weeks on this end of a growing season and perhaps 4 weeks in the
Spring !

Hopefully this will help get you closer to your final design ! For the good of the Craft ! Big AL

Late Note Perhaps something like this ?

http://www.webstaurantstore.com/turbo-air-tcb-5r-59-curved-glass-dual-dry-refrigerated-bakery-display-case-with-lift-up-front-18-6-cu-ft/902TCB5R.html