How hot will this greenhouse get?
I'd like to place 2 transparent pieces of plastic (30 centimeters apart), over a well insulated box. The box would be about 2x2x2 meters.
In Western Europe or Britain:
On a sunny day in the summer (outside temperature 25 degrees Celsius) how hot would it get inside?
On a sunny day in the winter (outside temperature 0 degrees Celsius) how hot would it get inside?
The box would be placed so that as much sun as possible would fall on the plastic.
Thank you for your help!