Gloria (meaning glory in Spanish) is a central heating system used in Castile, beginning in the Middle Ages. It is a direct descendant of the Roman hypocaust, and its feature of regulating the rate of combustion allows people to use smaller, cheaper materials for fuel, such as leaves, hay, or twigs, instead of wood.
Gloria (meaning glory in Spanish) is a central heating system used in Castile, beginning in the Middle Ages. It is a direct descendant of the Roman hypocaust, and its feature of regulating the rate of combustion allows people to use smaller, cheaper materials for fuel, such as leaves, hay, or twigs, instead of wood.
Source: Wikipedia "Gloria (heating system)" · CC BY-SA 4.0
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