Professor Frank Fenner, (retd. d.2013) the famous ANU virologist had a small flat with a kitchen facing south. It was cold and dark but Frank ate most of his meals in there.
The reflectors changed the kitchen into a very cheerful room for his remaining years. Frank kept some temperature recordings for me and around 2 o’clock he achieved a max. of 12º rise above normal – due, partially to the small volume of the completely enclosed kitchen.
A most successful installation. His living room temperature was slightly lower but sunlit.
The photo shows the solar image which was longer than the window to allow for the early morning and late afternoon solar lateral displacements.
Frank is shown standing behind the centre column with my visiting grandson Jakob from Copenhagen.
The sloping roof created some visual relativity problems with the horizontal reflector but in general it wasn’t too bad.