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A representative pressure–volume diagram for a refrigeration cycle. Vapour-compression refrigeration or vapor-compression refrigeration system (VCRS), [1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles.
Vapor-compression refrigeration [6] For comparison, a simple stylized diagram of a heat pump's vapor-compression refrigeration cycle: 1) condenser, 2) expansion valve, 3) evaporator, 4) compressor (Note that this diagram is flipped vertically and horizontally compared to the previous one) [7] Temperature–entropy diagram of the vapor-compression cycle.
A cascade refrigeration cycle is a multi-stage thermodynamic cycle. An example two-stage process is shown at right. (Bottom on mobile) The cascade cycle is often employed for devices such as ULT freezers. [1] In a cascade refrigeration system, two or more vapor-compression cycles with different refrigerants are used.
Current vapor-compression chiller technology is based on the "reverse-Rankine" cycle known as vapor-compression. See the attached diagram which outlines the key components of the chiller system. Diagram showing the components of a liquid-cooled chiller A view into the exposed shell and tube heat exchanger on a centrifugal chiller. Refrigerant ...
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A multi-evaporator system is a vapor-compression refrigeration system generally consisting of four major components: Evaporator; Compressor; Condenser; Thermal expansion valve; Sometimes in a refrigerator several loads are varied. Refrigerators used to function at different loads operated under different condition of temperatures and pressures.
Ideal Diesel cycle: 1→2: Isentropic compression Ideal Diesel cycle: 3→4: Isentropic expansion Ideal Brayton cycle: 1→2: Isentropic compression in a compressor: Ideal Brayton cycle: 3→4: Isentropic expansion in a turbine: Ideal vapor-compression refrigeration cycle: 1→2: Isentropic compression in a compressor: Ideal Lenoir cycle: 2→3 ...
Cycle Compression, 1→2 Heat addition, 2→3 Expansion, 3→4 Heat rejection, 4→1 Notes Power cycles normally with external combustion - or heat pump cycles: Bell Coleman: adiabatic: isobaric: adiabatic: isobaric A reversed Brayton cycle Carnot: isentropic: isothermal: isentropic: isothermal Carnot heat engine: Ericsson: isothermal: isobaric ...