Abstract
A new production facility for a beverage manufacturer has to provide a storage volume for around 5 million bottles as a refrigerated warehouse. The maximum temperatures were not allowed to exceed 14 °C due to the quality requirements in the production process. To achieve highest energy efficiency and to avoid year-round heating and cooling, the warehouse is passively conditioned: by explicitly coupling it with adjacent soil, its buffering effect was activated via uninsulated wall and floor components in contact with the ground. The warehouse stock was also integrated into the concept as thermal mass. Furthermore, the remaining building envelope was optimized to reduce heat gains and losses to external air to a minimum.
Highlights
The production of sparkling wine according to the centuries-old "Méthode traditionnelle" is characterised by the second phase of the fermentation process, which takes place as bottle fermentation
The results derived therefrom are primarily limited to the prevailing boundary conditions for use, climate data, soil conditions and building geometry
If the limits are set closer, it must be considered that the heat input must be limited. High requirements must be placed on the thermal quality of the building envelope
Summary
The production of sparkling wine according to the centuries-old "Méthode traditionnelle" (champagne method) is characterised by the second phase of the fermentation process, which takes place as bottle fermentation. The limit value of 14 °C must not be exceeded If this means that southern production locations (France, Spain, Italy) usually cause continuous cooling, in the temperate climate of Central Europe heating is required during winter and considerable cooling during summer. Due to seasonal and daily fluctuations in the outside air temperature and the influence of solar radiation, this potential cannot be exploited in above-ground storage areas. The situation is different for underground storage rooms: The annual mean temperature is between 8 and 10 °C, but the influence of seasonal and daily temperature fluctuations decreases steadily with increasing depth, and the temperature amplitude decreases in the course of the year. At the https://doi.org/10.10 51/matecconf /20192820200 6 same time, an increasing phase shift occurs with depth, as the temperature peaks in the soil occur with a delay [2]
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