Natural heat accumulation in large enclosures of premises with an insulation passive solar heating system

This article provides the results of design studies intended to determine the specific amount of heat accumulated in the inner layers of vast enclosures used in premises with an insulation passive solar heating system (Qacc) by the temperature-wave method. As shown by the calculation data, the value of Qacc depends significantly on the ratio of the Fte surface area of the translucent enclosure of the considered premise to the Ffl surface area of its floor slabs and the amplitude of air motion in the heated premise. According to the calculated data, Qacc, at the end of the second decade of March, is 169.0 kJ/m2 at Fte/Ffl = 0.30–0.40 whereas the coefficient of natural heat accumulation in the inner layers of the given vast enclosure is ≈0.12. © 2016, Allerton Press, Inc.