igu

IGU is an acronym that can refer to several distinct concepts depending on the context. The two most common meanings are the International Geographical Union, a scientific association, and the insulating glass unit used in building construction.

The International Geographical Union (IGU) is a global, non-governmental organization that promotes geography and coordinates international cooperation among researchers, educators, and institutions. It organizes international congresses and supports commissions on topics such as climate change, urban development, and regional geography. The IGU works with national geographic societies and other scientific bodies to encourage geography education, field research, and policy-relevant studies. Its activities typically include fostering collaboration across disciplines and regions, developing geographical knowledge, and supporting young researchers through networks and programs.

An insulating glass unit (IGU) is a sealed glazing assembly used in energy-efficient windows. It typically consists of two or more panes of glass separated by a spacer and filled with air or an inert gas such as argon. The gap reduces heat transfer and often reduces condensation. IGUs may include low-emissivity coatings, desiccants in the spacer, and various edge seals. Performance is described by U-value, Solar Heat Gain Coefficient, and visible light transmittance. Standards and testing vary by region (for example EN 1279 in Europe and ASTM E2190 in the United States).

Other uses of the acronym are less common and context-dependent. In any given case, the intended meaning should be inferred from surrounding information.