Comparative performance of two types of evacuated tubular solar collectors in a residential heating and cooling system. Final report, October 1 1977-September 30 1978 (including 1974-1977 operating results comparisons) [report]

G.O.G. Loef, W.S. Duff
1979 unpublished
doi:10.2172/5717016 fatcat:eu65ndzyqfcc5e5lbjozkxiygm