An absorption refrigerator is a refrigerator that uses a heat source to provide the energy needed to drive the cooling process. The principle can also be used to. Download Citation on ResearchGate | On Jul 30, , Saghar Mehdi and others published Design of Compressor less Solar Powered. design and fabricate a compressor less refrigerator system flywheel. A parametric model of the refrigerator is designed using 3D modeling software CATIA.

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The refrigerator uses three substances: The system drives the water off the lithium bromide solution with heat. Thermodynamics The classical Carnot heat engine.

The lower pressure in the evaporator section allows the liquid refrigerant to evaporate, which absorbs heat from the refrigerator food compartment. The orifice or throttle valve creates a pressure drop between the high pressure condenser section and the low pressure evaporator section. The less humid, warm air is then passed through an evaporative coolerconsisting of a spray of fresh water, which cools and re-humidifies the air.

The classical Carnot heat engine. By using this site, you agree to the Terms of Use and Privacy Policy. The main difference between the two systems is the way the refrigerant is changed from a gas back into a liquid so that the cycle can repeat.

Entropy and time Entropy and life Brownian ratchet Maxwell’s demon Heat death paradox Loschmidt’s paradox Synergetics.

Absorption refrigerator – Wikipedia

Heat engines Heat pumps Thermal efficiency. The cycle is closed, with all hydrogen, water and ammonia collected and endlessly reused.


The resulting hot, high-pressure gas refrigrrator condensed to a liquid form by cooling in a heat exchanger “condenser” that is exposed to the external environment usually air in the room. The condensed refrigerant, now at a temperature near to that of the external environment, then passes through an orifice or refrigeraator throttle valve into the evaporator section.

It continues to evaporate, while the large enthalpy of vaporization heat flows from the warmer refrigerator interior to the cooler liquid ammonia and then to more ammonia gas.

Retrieved from ” https: Ammonia evaporates, taking a small amount of heat from the liquid and lowering the liquid’s temperature. This compressogless was last edited on 26 Novemberat Without phase change hot air engines.

Commercial production began in by the newly formed company AB Arcticwhich was bought rsfrigerator Electrolux in This “Platen-Munters” design can operate without a pump. While having the same total pressure throughout the system, the refrigerator maintains a low partial pressure of the refrigerant therefore high evaporation rate in the part of the system that draws heat out comprrssorless the low-temperature interior of the refrigerator, but maintains the refrigerant at high partial pressure therefore low evaporation rate in the part of the system that expels heat to the ambient-temperature air outside the refrigerator.

Absorption refrigerator

Carnot’s theorem Clausius theorem Fundamental relation Ideal gas law. In the s, absorption refrigeration saw a renaissance due to the substantial demand for refrigerators for caravans travel trailers. Equations Carnot’s theorem Clausius theorem Refrigreator relation Ideal gas law Maxwell relations Onsager reciprocal relations Bridgman’s equations Table of thermodynamic equations.


Thermodynamic cycles Heat pumps Cooling technology Heating, ventilating, and air conditioning Gas technologies.

The condensed liquid ammonia flows down to be mixed with the hydrogen gas released from the absorption step, repeating the cycle. The company marketed refrigerators for recreational vehicles RVs under the Dometic brand.

Another variant, uses air, water, and a salt water solution. Material properties Property databases Specific heat capacity. Conjugate variables in italics.

Heating, ventilation and air conditioning. Caloric theory Theory of heat.

From Wikipedia, the free encyclopedia. InElectrolux sold most of its leisure products line to the venture-capital company EQT which created Dometic as a stand-alone company.

Absorption refrigerators are a popular alternative to regular compressor refrigerators where electricity is unreliable, costly, or unavailable, where noise from the refrigeratir is problematic, or where surplus heat is available e.

The pure ammonia gas then enters the condenser. An absorption refrigerator is a refrigerator that uses a heat source e. Architectural acoustics Architectural engineering Architectural technologist Building services engineering Building information modeling BIM Deep energy retrofit Duct leakage testing Environmental engineering Hydronic balancing Kitchen exhaust cleaning Mechanical engineering Mechanical, electrical, and plumbing Mold growth, assessment, and remediation Refrigerant refrigwrator Testing, adjusting, balancing.

Free energy Compressorlesss entropy. Caloric theory Theory of heat Vis viva “living force” Mechanical equivalent of heat Motive power.