An assessment of using ground thermal inertia as passive thermal technique in the wine industry around the world

Abstract The main objective of this research is to promote passive thermal design techniques in the construction of wineries. We analyze the suitability of using the thermal inertia of the ground that surrounds underground cellars to provide an adequate ambience for the ageing and conservation of wine. For this purpose, a modelling procedure to simulate the annual temperature cycle inside the cellar was developed. The proposed model was validated using experimental air temperature data from wine cellars in Spain. Many of the main wine-producing regions of the world have been analyzed by means of the model. Results show that underground cellars have advantages for the ageing and conservation of wine in all regions studied because of the thermal inertia of the ground and its ventilation behaviour. By adjusting the depth according to the ground properties and exterior conditions, ideal temperature can be reached inside the cellar without air-conditioning expenses. The modelling procedure and the results data could be a great help in the study and design of new wine cellars or constructions with similar characteristics, making it possible to estimate the indoor temperature and select the location and most suitable parameters.

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