Special exhibition "Solar Technique 77" Hamburg: In the future turn the eyes of the scientist with regard of the using of solar energy. At the biggest solar-technical Fair "Solar Technique 77" till now, which took place in Hamburg, new achievements have been show end discussed, to supply the great requirements of energy and now in future. Even today the part of solar energy-sources amounts to 20% - already in the year 2025 it shall be 75%. Photo shows Greenhouse-heating with warmth-pump and latent-reservoirs.
Photo measures 8 x 6 inches.
Photo is dated --1977.
Photo back:
