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Passive solar design can reduce building energy demand for heating, cooling and ventilation, while also contributing to the comfort, well-being and productivity of the building’s occupants. The successful application of passive solar features, such as solar walls, requires a good understanding of the factors influencing their energy performance and a correct assessment of this performance during the design process. This paper discusses some basic design strategies for successful application of solar walls and the factors with the most significant impact on their efficiency. It summarizes the principle results and findings of an experimental study, based on dynamic simulations and test site measurements. The energy performance of various configurations of unvented solar walls was investigated in different climatic conditions. The outcomes of the dynamic simulations were used to develop a simplified quasi-steady-state model, which can be used for approximate evaluation of the heat gains and heat losses through an unvented solar wall on a monthly basis. The model is compatible with the monthly method of EN ISO 13790.
EN ISO 13790, energy performance, experimental, green buildings, heat transfer, modelling, passive solar, TRNSYS, Trombe wall
[1] Trombe, F. & Michel, J., Naturally air-conditioned dwellings, U.S. Patent 3832992, 1972.
[2] Morse, E.S., Warming and ventilating apartments by sun’s rays, U.S. Patent 246626, 1881.
[3] Duffie, J. & Beckman, W., Solar engineering of thermal processes, 3rd ed, Wiley: Hoboken, New Jersey, pp. 733–759, 2006.
[4] Wilson, A., Thermal storage wall design manual, New Mexico Solar Energy Associa- tion: Albuquerque, New Mexico, 1979.
[5] Monsen, W.A., Klein S.A. & Beckman, W.A., The un-utilizability design method for collector-storage walls. Solar Energy, 29, pp. 421–429, 1982. https://doi.org/10.1016/0038-092x(82)90079-2
[6] Saadatian, O., Sopian, K., Lim, C.H., Asim, N. & Sulaiman, M.Y., Trombe walls: a review of opportunities and challenges in research and development. Renewable and Sustainable Energy Reviews, 16, pp. 6340–6351, 2012. http://dx.doi.org/10.1016/j.rser.2012.06.032
[7] De Gracia Cuesta, A., Thermal analysis of a ventilated facade with phase change mate- rials (PCM), PhD thesis, University of Lleida, Spain, 2013.
[8] Torcellini, P., Long, N., Pless, S. & Judkoff, R., Evaluation of the low-energy design and energy performance of the Zion National Park Visitors Center, NREL/TP-550- 34607, NREL: Golden, Colorado, 2005.
[9] Torcellini, P. & Pless, S., Trombe walls in low-energy buildings: Practical experiences, Presented at 8th World Renewable Energy Congress and Expo, Denver, Colorado, 2004.
[10] Judkoff, R. & Sokol, F., Performance of a selective-surface Trombe wall in a small com- mercial building, Presented at AS/ISES Annual Meeting, Philadelphia, Pennsylvania, 1981.
[11] Steven Winter Associates, The passive solar design and construction handbook, Wiley: New York, 1998.
[12] Dowson, M., Harrison, D. & Dehouche, Z., Trombe walls with nanoporous aerogel insulation applied to UK housing refurbishments. International Journal of Smart and Nano Materials, 5(4), pp. 283–303, 2014. http://dx.doi.org/10.1080/19475411.2014.999730
[13] Torcellini, P., Pless, S., Judkoff, R. & Crawley, D., Solar technologies & the building envelope. ASHRAE Journal, 49(4), pp. 14–22, 2007.
[14] Klein, S.A., Beckman, W.A., Mitchell, J.W., Duffie, J.A., Duffie, N.A., Freeman, T.L., et al., TRNSYS 17: A transient system simulation program, University of Wisconsin- Madison, 2010.
[15] TESS Component Library Package. Available at: http://www.trnsys.com/tess-libraries [16] Stankov, B., Models of the heat transfer processes in passive solar systems, PhD thesis,
Technical University of Sofia, Bulgaria, 2015.
[17] Subroutine Type36, Solar Energy Laboratory, University of Wisconsin-Madison, 2013. [18] ANSI/ASHRAE/IESNA Standard 90.1-2007, Energy standard for buildings except
low-rise residential buildings, Atlanta, Georgia, 2007.
[19] Kottek, M., Grieser, J., Beck, C., Rudolf, B. & Rubel F., World map of the Köppen- Geiger climate classification updated. Meteorologische Zeitschrift, 15, pp. 259–263, 2006.
https://doi.org/10.1127/0941-2948/2006/0130
[20] EN ISO 13790:2008, Energy performance of buildings -- Calculation of energy use for space heating and cooling, Geneva, Switzerland, 2008.
[21] CIBSE Guide A – Environmental design, 8th ed., The Chartered Institution of Building Services Engineers: London, United Kingdom, 2015.
[22] ANSI/ASHRAE Standard 55-2010, Thermal environmental conditions for human occupancy, Atlanta, Georgia, 2010.