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Glossary

Terms for Green Architecture, Building & Energy


This glossary includes more than 300 solar terms, as well as hundreds of additional sustainable design and construction terms.

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Water Wall

Definition: A passive heating and cooling technique for collecting and controlling solar energy, usually fronted by glass. Water walls are usually water-filled containers exposed to or protected from the sun depending on mode (heating or cooling). Wintertime use is to collect and store heat, which is used to warm a living space. Summer use is to absorb unwanted internal heat, thereby cooling the interior, and dissipating the heat at a later time.