Hi John,
Stoves were in some hangars, but more espcially in the ones used as repairshops, and in other cases most of the time in a corner of the bigger hangars, just to keep warm in the winter.
In many case, just as at the former aerodrome in my hometown there were also small baracks (I have a picture of them) with stoves and sleepingspace for the personnel.
The stove looks quite correct, although we had also the very famous type of Leuvense stove (this is fun ! Stove is the Flemish slang for a stove, we call them in good Flemish a 'kachel') which was used for warming and preparing meals.
Even gasoline was kept in the hangars, which sometimes lead to accidents ! Or in the case at my village, to children playing with matches and the destruction of a plane and hangar.
Concerning dimensions, it looks quite ok, most of them were very small indeed.
And once again, it is a beauty, that hangar !
Best from Johan