The influence of slotted floors on the bioclimatic traditional Galician agricultural dry-store structure (hórreo)

• Published in: Energy and buildings 2011-12, Vol.43 (12), p.3491-3496
• Main Authors: Saá, C., Míguez, J.L., Morán, J.C., Vilán, J.A., Lago, M.L., Comesaña, R.
• Format: Article
• Language: English
• Subjects: Airflow; Applied sciences; Bioclimatic traditional dry store; Biomass drying; Buildings; Buildings. Public works; Computation methods. Tables. Charts; Conservation; Exact sciences and technology; External envelopes; Floor. Ceiling; Grains; Granaries; Granary; Grooving; Hórreo; Industrial facility (building, storage, etc.); Preservation; Rural development; Solar radiation; Stone; Structural analysis. Stresses; Types of buildings; Ventilation
• ISSN: 0378-7788
• DOI: 10.1016/j.enbuild.2011.09.015

► The importance of airflow in the preservation of stored grain is based on the use of air. ► Some granaries do not have a wooden slatted floor with gaps, although they should. ► Slatted floor influences the thermodynamic behaviour, which is powered by solar radiation. ► The simulations showed that the inflow of air through the floor was high. ► Grooving positively affects the internal containment temperature. Granaries (hórreos) are bioclimatic conservation structures with various forms that have been used for over 2000 years in different countries across Europe and Asia. Galician raised granaries built upon “staddle stones” (pillars with a rodent-proof cap) are specialised barns. The importance of airflow in the preservation of stored grain is based on the use of air as an energy exchange fluid for exchanging heat or water with the grains. The preservation system is based on continuous ventilation inside the bin. Some granaries do not have a wooden slatted floor with gaps, although they should. The gapped, slatted floor particularly influences the thermodynamic behaviour, which is powered by solar radiation, improving ventilation efficiency and internal temperature regulation. This paper shows the important influence of floor grooving on improving grain conservation via better ventilation and limiting the rise in the internal temperature when the granary is subjected to solar radiation.