Because concrete is a low cost, low energy content material, and because many buildings have unobstructed south-facing walls, the concept of an air heating structural block was evolved. Four configurations are described, two routinely available from concrete block manufacturers, and two specially designed. Test walls were evaluated heating ambient air in a single pass, so the temperature difference was low. With that reservation, there was little difference between any of the configurations (one of the special designs was best) or between the blocks and conventional solar air heaters.
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Because concrete is a low cost, low energy content material, and because many buildings have unobstructed south-facing walls, the concept of an air heating structural block was evolved. Four configurations are described, two routinely available from concrete block manufacturers, and two specially designed. Test walls were evaluated heating ambient air in a single pass, so the temperature difference was low. With that reservation, there was little difference between any of the configurations (one of the special designs was best) or between the blocks and conventional solar air heaters.
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Payne, P. R. & Brown, J. P.Experiments with structural concrete blocks which double as solar air heaters. Final report,
report,
January 1, 1979;
United States.
(https://digital.library.unt.edu/ark:/67531/metadc1183197/:
accessed July 16, 2024),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.