A wine cellar is a place where wine is stored in bottles, barrels, or, less commonly, carboys, amphorae, or plastic containers. A climate control system keeps crucial parameters like temperature and humidity in an operating wine cellar under control. Passive wine cellars, on the other hand, are not climate-controlled and are typically built below to minimize temperature changes.

Smart glass, also known as switchable glass or privacy glass, refers to a high-tech material capable of altering its light transmission properties when voltage, light, or heat is applied. It can switch between transparent and opaque states, offering privacy, glare reduction, and energy efficiency. Applications of smart glass span various industries. In architecture, it enhances privacy in windows, sunroofs, and partitions while controlling sunlight and heat. In automotive, it improves comfort and safety by regulating light and heat transmission in car windows. Additionally, it's used in display cases, electronics, and healthcare for privacy or interactive purposes.