closed system


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closed system

[¦klōzd ′sis·təm]
(engineering)
A system for water handling that does not permit air to enter.
(thermodynamics)
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.

closed system

A heating or refrigeration piping system in which the circulating water or brine is completely enclosed and under pressure above atmospheric.

closed system

A system in which the specifications are kept secret to prevent interference from third parties. It inhibits third-party software from being installed; it keeps third-party hardware from interoperating with it, and it prevents third-party enhancements from improving the product. Contrast with open system. See proprietary standards.
References in periodicals archive ?
We are deeply appreciative that healthcare facilities throughout the world are increasingly choosing Equashield's Closed System Transfer Device over alternative products," said Marino Kriheli, Co-Founder of Equashield.
With or without our blessing or condemnation, homosexuality is here to stay, a closed system on either side will be left at the pier.
Chewing, digesting, and excreting its own revolving essence, it represents a closed system in which each element seems to refer to other parts internal to the cycle.
SuPure polymers can be unloaded at customer facilities using a closed system called the Flexicon bulk-bag discharger (supplied by Flexicon Corp.
Bruker Daltonics' newest IMS chemical detectors use a very low intensity radiation source in a closed system to ionize air samples for analysis.
CODAN to Distribute Advanced Equashield II Product in Birthplace of Closed System Transfer Device Concept
Pension fund capitalism suggests the inclusion of more fiscal foresight as a component of investment strategy, recognizing that today's ownership-concentrating closed system of finance will not change until pension fund financiers actively foster ownership-expanding investment strategies.
Dewatering (SDU) and drying extruders (VCU) are said to offer closed system performance to the rubber industry.
She seems to take painting as a closed system, an array of readymade elements from which the artist selects in order to cannily recombine them (if possible) into a new constellation of familiar components.
By comparison to a "hands-off" proprietary closed system, NAS, and even first generation SAN, an Internet Storage Network built with a SAN appliance can add servers and/or storage without bringing down the network and scaling streaming performance linearly without degrading overall system performance.
Disposable surgical boots,surgical masks with 4 descartables pitas,endotracheal suction catheter closed system no.
Mayor Richard Riordan has said he thinks a closed system is needed initially to allow the service to develop in Los Angeles.