closed system(redirected from closed standard)
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Related to closed standard: Open standard
closed system[¦klōzd ′sis·təm]
A system for water handling that does not permit air to enter.
A system which is isolated so that it cannot exchange matter or energy with its surroundings and can therefore attain a state of thermodynamic equilibrium. Also known as isolated system.
A heating or refrigeration piping system in which the circulating water or brine is completely enclosed and under pressure above atmospheric.