From: utzoo!decvax!harpo!zeppo!whuxk!houxm!houxa!houxi!houxz!halle1
Newsgroups: net.columbia
Title: Re: Day by Day Flight Plan
Article-I.D.: houxz.216
Posted: Mon Nov 15 08:21:44 1982
Received: Tue Nov 16 02:00:18 1982
References: alice.1090 rocheste.229

The heat is dissipated not by conduction but by radiation.  Opening the 
doors allows the heat to be radiated out into the near absolute zero
environment.  If the doors are closed, only that energy which has
conducted through the insulated doors can escape.
Even if the doors were a thin metal sheet, so that conduction were
not a problem, merely their being there causes radiation from inner
surfaces to be effectively cut in half.