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Refrigeration Engineering In thermodynamics, coldness is an energetic imbalance. In engineering, this imbalance results from the forced exchange of heat between two places. Refrigeration engineering deals with various procedures to produce coldness in many different areas of application. |
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Compression refrigeration
systems: A classical use of this refrigeration engineering procedure is the refrigerator. In this coldness-machine the cooling agent initially absorbs heat energy from the inside of the refrigerator on a low energy-level (low pressure, low temperature) and thereby evaporates. By means of the additional compression of the cooling agent, its energy density rises to a higher energy level (high pressure, high temperature). This energy can then be dispensed to the surrounding area via a condenser. During the process, the cooling agent condenses and is then relaxed via an expansion valve until it reaches its initial energy-level once again (low pressure, low temperature). Many procedures in refrigeration engineering are based on this principle. An evening cooling in this procedure, however, can only be guaranteed through a constant supply of electrical or mechanical energy in the compressor. |
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