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Relevant bibliographies by topics / Vapour compression system

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Academic literature on the topic 'Vapour compression system'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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Journal articles on the topic "Vapour compression system"

1

Sairamakrishna, B., T. Gopala Rao, and N. Rama Krishna. "Cop Enhancement of Vapour Compression Refrigeration System." Indian Journal of Production and Thermal Engineering 1, no. 2 (June 10, 2021): 1–6. http://dx.doi.org/10.35940/ijpte.b2004.061221.

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This experimental investigation exemplifies the design and testing of diffuser at compressor inlet and nozzle at condenser outlet in vapour compression refrigeration system with the help of R134a refrigerant. The diffuser with divergence angle of 12°,14° and the nozzle with convergent angle 12°,14° are designed for same inlet and outlet diameters. Initially diffusers are tested at compressor inlet diffuser is used with inlet diameter equal to exit tube diameter of evaporator and outlet tube diameter is equal to suction tube diameter of the compressor. Diffuser helps to increases the pressure of the refrigerant before entering the compressor it will be helps to reduces the compression work and achieve higher performance of the vapour compression refrigeration system. Then nozzles are testing at condenser outlet, whereas nozzle inlet diameter equal to discharging tube diameter of condenser and outlet diameter equal to inlet diameter of expansion valve. Additional pressure drop in the nozzle helped to achieve higher performance of the vapour compression refrigeration system. The system is analyzes using the first and second laws of thermodynamics, to determine the refrigerating effect, the compressor work input, coefficient of performance (COP).

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B, Sairamakrishna, T. Gopala Rao, and Rama Krishna, N. "Cop Enhancement of Vapour Compression Refrigeration System." Indian Journal of Production and Thermal Engineering 1, no. 2 (June 10, 2021): 1–6. http://dx.doi.org/10.35940/ijpte.b2004.06122.

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This experimental investigation exemplifies the design and testing of diffuser at compressor inlet and nozzle at condenser outlet in vapour compression refrigeration system with the help of R134a refrigerant. The diffuser with divergence angle of 12°,14° and the nozzle with convergent angle 12°,14° are designed for same inlet and outlet diameters. Initially diffusers are tested at compressor inlet diffuser is used with inlet diameter equal to exit tube diameter of evaporator and outlet tube diameter is equal to suction tube diameter of the compressor. Diffuser helps to increases the pressure of the refrigerant before entering the compressor it will be helps to reduces the compression work and achieve higher performance of the vapour compression refrigeration system. Then nozzles are testing at condenser outlet, whereas nozzle inlet diameter equal to discharging tube diameter of condenser and outlet diameter equal to inlet diameter of expansion valve. Additional pressure drop in the nozzle helped to achieve higher performance of the vapour compression refrigeration system. The system is analyzes using the first and second laws of thermodynamics, to determine the refrigerating effect, the compressor work input, coefficient of performance (COP).

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M. M. Tayde, M. M. Tayde, Pranav Datar, Pankaj kumar, and Dr L. B. Bhuyar Dr. L. B. Bhuyar. "Optimum Choice of Refrigerant for Miniature Vapour Compression Refrigeration System." Indian Journal of Applied Research 3, no. 3 (October 1, 2011): 134–36. http://dx.doi.org/10.15373/2249555x/mar2013/42.

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Ramanathan, Anand, and Prabhakaran Gunasekaran. "Simulation of absorption refrigeration system for automobile application." Thermal Science 12, no. 3 (2008): 5–13. http://dx.doi.org/10.2298/tsci0803005r.

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An automotive air-conditioning system based on absorption refrigeration cycle has been simulated. This waste heat driven vapor absorption refrigeration system is one alternate to the currently used vapour compression refrigeration system for automotive air-conditioning. Performance analysis of vapor absorption refrigeration system has been done by developing a steady-state simulation model to find the limitation of the proposed system. The water-lithium bromide pair is used as a working mixture for its favorable thermodynamic and transport properties compared to the conventional refrigerants utilized in vapor compression refrigeration applications. The pump power required for the proposed vapor absorption refrigeration system was found lesser than the power required to operate the compressor used in the conventional vapor compression refrigeration system. A possible arrangement of the absorption system for automobile application is proposed.

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Valchev, Slav, Nenko Nenov, and Vasil Georgiev. "Determination of coefficient of performance of mechanical vapour recompression heat pump." E3S Web of Conferences 112 (2019): 01013. http://dx.doi.org/10.1051/e3sconf/201911201013.

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Mechanical vapour recompression heat pump systems are widely used in the industry -in evaporator and distillation installations, in seawater desalination and industrial wastewater treatment plants. The estimation of the energy efficiency level of this type of system is based on values of two basic parameters: specific energy consumption for production of 1 kg clean water (condensate) and actual coefficient of performance of heat pump system. The object of study is experimental determination of value of actual coefficient of performance of mechanical vapour recompression heat pump system for wastewater treatment. A mathematical regression equation between the actual coefficient of performance μ and two significant factors – temperature of secondary water vapour tsv and compression ratio of water vapour in mechanical compressor of heat pump system σ is received. The analysis show that actual coefficient of performance μ highly depends of value of compression ratio σ and less depends of values of temperature of secondary vapour tsv. It conclude that MVR heat pump system, in order to operate with high values of the actual coefficient of performance should be working to high values of temperature of secondary vapour and low values of compression ratio of water vapour in mechanical compressor.

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West, A. C., and S. A. Sherif. "Optimization of multistage vapour compression systems using genetic algorithms. Part 1: Vapour compression system model." International Journal of Energy Research 25, no. 9 (2001): 803–12. http://dx.doi.org/10.1002/er.723.

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Liang, Youcai, Zhibin Yu, and Wenguang Li. "A Waste Heat-Driven Cooling System Based on Combined Organic Rankine and Vapour Compression Refrigeration Cycles." Applied Sciences 9, no. 20 (October 11, 2019): 4242. http://dx.doi.org/10.3390/app9204242.

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In this paper, a heat driven cooling system that essentially integrated an organic Rankine cycle power plant with a vapour compression cycle refrigerator was investigated, aiming to provide an alternative to absorption refrigeration systems. The organic Rankine cycle (ORC) subsystem recovered energy from the exhaust gases of internal combustion engines to produce mechanical power. Through a transmission unit, the produced mechanical power was directly used to drive the compressor of the vapour compression cycle system to produce a refrigeration effect. Unlike the bulky vapour absorption cooling system, both the ORC power plant and vapour compression refrigerator could be scaled down to a few kilowatts, opening the possibility for developing a small-scale waste heat-driven cooling system that can be widely applied for waste heat recovery from large internal combustion engines of refrigerated ships, lorries, and trains. In this paper, a model was firstly established to simulate the proposed concept, on the basis of which it was optimized to identify the optimum operation condition. The results showed that the proposed concept is very promising for the development of heat-driven cooling systems for recovering waste heat from internal combustion engines’ exhaust gas.

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Okafor, Victor. "THERMODYNAMIC ANALYSIS OF COMPRESSOR INLET AIR PRECOOLING TECHNIQUES OF A GAS TURBINE PLANT OPERATIONAL IN NIGERIA ENERGY UTILITY SECTOR." International Journal of Engineering Science Technologies 4, no. 2 (April 1, 2020): 13–24. http://dx.doi.org/10.29121/ijoest.v4.i2.2020.74.

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Thermodynamic analysis of inlet air pre-cooling techniques of compressor is among the methods for the enhancement of gas turbine performance. This study compared the effect of using evaporative cooling system pre-cooling method, vapour compression refrigeration precooling and vapour absorption refrigeration precooling techniques to the gas turbine Net Power Output, Thermal efficiency, Thermal Efficiency Change factor (TEC) and Power Gain Ratio (PGR) taking into recognition the prevalent weather and climatic conditions of Nigeria and as well as optimization parameters for the reference system (i.e. without precooling techniques). The results show that at air temperature of 311K, the reference system, evaporative precooling, vapour compression refrigeration and vapour absorption refrigeration precooling methods recorded Net power Outputs of 23.143MW, 25.39MW, 31.84MW and 34.90MW respectively. The Thermal Efficiency Change factor recorded by the precooling systems at an ambient temperature of 311K is 8.68%, 37.4% and 51% respectively.

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Patel, Brijesh H., and Lalit S. Patel. "Experimental Investigation of Sub Cooling Effect on Simple Vapour Compression System by Domestic Refrigerator." Indian Journal of Applied Research 3, no. 3 (October 1, 2011): 130–33. http://dx.doi.org/10.15373/2249555x/mar2013/41.

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Mahmood, R. A., O. M. Ali, A. Al-Janabi, G. Al-Doori, and M. M. Noor. "Review of Mechanical Vapour Compression Refrigeration System Part 2: Performance Challenge." International Journal of Applied Mechanics and Engineering 26, no. 3 (August 26, 2021): 119–30. http://dx.doi.org/10.2478/ijame-2021-0039.

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Abstract Reducing energy consumption and providing high performance for a vapour compression refrigeration system are big challenges that need more attention and investigation. This paper provides an extensive review of experimental and theoretical studies to present the vapour compression refrigeration system and its modifications that can be used to improve system’s performance and reduce its energy consumption. This paper also presents the challenges that can be considered as a gab of research for the future works and investigations. Cooling capacity, refrigerant effect, energy consumption can be improved by using vapour injection technique, natural working fluid, and heat exchanger. Based on the outcome of this paper, vapour injection technique using natural refrigerant such as water can provide ultimate friendly refrigeration system. Future vision for the vapour compression refrigeration system and its new design technique using Computational Fluid Dynamic (CFD) is also considered and presented.

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Dissertations / Theses on the topic "Vapour compression system"

1

Welsby, P. "Studies on mechanical vapour compression heat pumps." Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376884.

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Wong, Choong Wah. "An absorption recompression system." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320018.

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Harraghy, P. G. "An assessment of refrigeration system performance with a particular emphasis on the effects of frosting and defrosting." Thesis, University of Liverpool, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234842.

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Alfredsson, Sandra. "Model Based Diagnosis of an Air Source Heat Pump." Thesis, Linköpings universitet, Fordonssystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71423.

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The purpose of a heat pump is to control the temperature of an enclosed space. This is done by using heat exchange with a heat source, for example water, air, or ground. In the air source heat pump that has been studied during this master thesis, a refrigerant exchanges heat with the outdoor air and with a water distribution system. The heat pump is controlled through the circuit containing the refrigerant and it is therefore crucial that this circuit is functional. To ensure this, a diagnosis system has been created, to be able to detect and isolate sensor errors. The diagnosis system is based on mathematical models of the refrigerant circuit with its main components: a compressor, an expansion valve, a plate heat exchanger, an air heat exchanger, and a four-way valve. Data has been collected from temperature- and pressure sensors on an air source heat pump. The data has then been divided into data for model estimation and data for model validation. The models are used to create test quantities, which in turn are used by a diagnosis algorithm to determine whether an error has occurred or not. There are nine temperature sensors and two pressure sensors on the studied air source heat pump. Four fault modes have been investigated for each sensor: Stuck, Offset, Short circuit and Open circuit. The designed diagnosis system is able to detect all of the investigated error modes and isolate 40 out of 44 single errors. However, there is room for improvement by constructing more test quantities to detect errors and decouple more fault modes. To further develop the diagnosis system, the existing models can be improved and new models can be created.

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Roberti, Giovanni. "Steady-state Modelling of a Vapor Compression Refrigeration Cycle." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19438/.

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In this work a steady-state model of a simple vapor compression refrigeration cycle is presented. All the fundamental components of this system are modeled separately in order to consider them as black boxes that take inputs and convert them into output variables. The heat exchangers are treated as a set of multiple zones, identified by the refrigerant's state, connected in series, in which the heat transfer coefficient (HTC) is constant. A non-linear system of equations is obtained applying the energy balances and the ε-NTU method for each zone in the heat exchangers. A study on the HTC correlations used to connect the length of the zones with the value of the respective HTC is developed. The compressor is modeled using a polynomial function. Some iterative methods for the resolution in Matlab of the models of the components and the machine are presented, focusing on the strategy to decrease the execution time and to increase the accuracy of the results. Finally, all the models are validated through a set of experimental data and the global model is used to make some considerations about the efficiency and the exergy destruction in the plant.

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Hussen, Muaz Bedru. "STUDY OF A SMALL-SCALE COOLING SYSTEM BASED ON AN ICE-STORAGE AND A DC-POWERED VAPOUR COMPRESSION REFRIGERATION UNIT TO IMPLEMENT SOLAR ENERGY IN REMOTE AREAS." Doctoral thesis, Universitat Rovira i Virgili, 2020. http://hdl.handle.net/10803/670597.

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La refrigeració manté la qualitat sensorial del productes i minimitza la pèrdua en les cadenes de valor del fred. Les àrees remotes dels països en desenvolupament es caracteritzen principalment pels baixos nivells de tecnologia, accés limitat a la xarxa elèctrica i el predomini de les petites explotacions agrícoles com un desafiament. El principal objectiu d'aquesta tesi és desenvolupar i caracteritzar un sistema de refrigeració modular multipropòsit basat en l'emmagatzematge de gel per a aplicacions de petita escala. El sistema d'emmagatzematge de gel va utilitzar un equip de refrigeració amb un compressor de corrent continu i velocitat variable. La càrrega de refrigerant i les dimensions de l'tub capil·lar es van optimitzar experimentalment per maximitzar el rendiment i evitar la caiguda de temperatura de la línia de succió. A més, es va avaluar experimentalment el rendiment de sistema sota diversos paràmetres. Els usos de l'emmagatzematge de gel per a refrigeració de llet i aplicacions de càmeres frigorífiques també es van investigar experimentalment. Es van utilitzar deposits de llet convencionals en un bany de refredament aïllat, i en una cambra frigorífica dotada d'una unitat de fancoil amb els seus respectius sistemes experimentals. En general, el treball de recerca realitzat en aquesta tesi aporta més coneixements sobre el desenvolupament de tecnologies de refrigeració baixes en carboni adequades per a països en desenvolupament.
La refrigeración mantiene la calidad sensorial del producto y minimiza la pérdida en las cadenas de valor del frío. Las áreas remotas de los países en desarrollo se caracterizaron principalmente por bajos niveles de tecnología, acceso limitado a la red eléctrica y el predominio de las pequeñas explotaciones agrícolas como un desafío. El principal objetivo de esta tesis es desarrollar y caracterizar un sistema de refrigeración modular multipropósito basado en el almacenamiento de hielo para aplicaciones de pequeña escala. El sistema de almacenamiento de hielo utilizó un equipo de refrigeración con un compresor de corriente continua y velocidad variable. La carga de refrigerante y las dimensiones del tubo capilar se optimizaron experimentalmente para maximizar el rendimiento y evitar la caída de temperatura de la línea de succión. Además, se evaluó experimentalmente el rendimiento del sistema bajo diversos parámetros. Los usos del almacenamiento de hielo para refrigeración de leche y aplicaciones de cámaras frigoríficas también se investigaron experimentalmente. Se utilizaron cantaras de leche convencionales en un baño de enfriamiento aislado, y en una cámara frigorífica dotada de una unidad de fancoil con sus respectivos sistemas experimentales. En general, el trabajo de investigación realizado en esta tesis aporta más conocimientos sobre el desarrollo de tecnologías de refrigeración bajas en carbono adecuadas para países en desarrollo.
Refrigeration and cooling maintains the sensory quality of the product and minimizes the loss in cold value chains. Remote areas of the developing countries were mainly characterized by low levels of technology, limited access to modern energy and dominance of small-holder farms as a challenge. Hence, the main objective of this thesis is to develop and characterize a modular-multipurpose cooling system based on an ice-storage for small-scale applications. As part of the experimental system, the ice storage with a variable speed DC-compressor was developed and fabricated. The refrigerant charge and the capillary tube dimensions were experimentally optimized to maximize performance and avoid suction line temperature drop. Moreover, performance of the system under varying parameters was evaluated. Uses of the ice storage for milk cooling and cold room applications were also experimentally investigated. Conventional milk-cans with insulated box and a heat simulated room with a FCU were utilized as respective experimental systems. Chilled water recirculation rates, ice-storage energy density, and air flow rate across FCU were varied as main experimental parameters. Improvement of the ice production technique and corresponding performance data obtained were among main contributions of this research. In general, the research work performed in this thesis contributes more knowledge on development of low-carbon cooling technologies suitable for developing countries. Therefore, piloting and field testing of the technology are among major recommendations for future work.

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Lara, Ruiz Jorge Horacio Juan. "An advanced vapor-compression desalination system." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3340.

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Currently, the two dominant desalination methods are reverse osmosis (RO) and multi-stage flash (MSF). RO requires large capital investment and maintenance, whereas MSF is too energy intensive. An innovative vapor-compression desalination system is developed in this study. A comprehensive mathematical model for the heat exchanger/evaporator is described. The literature indicates that extraordinarily high overall heat transfer coefficients for the evaporator are possible at selected operating conditions that employ dropwise condensation in the steam side and pool boiling in the liquid side. A smooth titanium surface is chosen to promote dropwise condensation and to resist corrosion. To maximize energy efficiency, a combined-cycle cogeneration scheme is employed composed of a gas turbine, a heat recovery boiler, and a steam turbine that drive a compressor. The combined-cycle power source is oversized relative to the needs of the compressor. The excess power is converted to electricity and sold to the open market. A three-effect evaporator is employed. It is fed with seawater, assumed to be 3.5% salt. Boiling brine (7% salt) is in the low pressure side of the heat exchanger and condensing steam is in the high-pressure side of the heat exchanger. The condensing steam flows at 1.52 m/s (5 ft/s), which maximizes the heat transfer coefficient. The plant is sized to produce 37,854 m3/d (10 mill gal/day) and is assumed to be financed with a 5%, 30-yr municipal bond. Two economic cases were emphasized: the United States and the Middle East. For the United States, the fuel costs $5/GJ ($5.27/mill Btu) with the latent heat exchanger at ( ) 1.11 K 2.00 F T Ã = Â° . The required compressor energy is 14 MJ/m3 (14.7 kW h/thous gal). The capital cost for the U.S. is $884 d/m3 ($3,342/thous gal) and the delivered water selling price is $0.47/m3 ($1.79/thous/gal). For the Middle East, the fuel costs $0.5/GJ ($0.53/mill Btu) with the latent heat exchanger at K T 33 . 3 = Ã ( ) F 00 . 6 Â° . The required compressor energy is 26 MJ/m3 (27.3 kW h/thous gal). ). The capital cost for the Middle East is $620 d/m3 ($2,344/thous gal), and the delivered water selling price is $0.25/m3 ($0.95/thous/gal). In all cases, the water selling price is attractive relative to competing technologies.

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Ibrahim, G. A. "An investigation into liquid film absorbers for refrigeration systems." Thesis, King's College London (University of London), 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245436.

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Cornejo, Ma Elena Rueda. "Fault detection and diagnosis in vapour compression refrigeration systems." Thesis, Brunel University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439801.

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Miller, Eric S. "Dynamic Modeling of Vapor Compression Cycle Systems." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337715881.

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Books on the topic "Vapour compression system"

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K, Kokula Krishna Hari, and K. Saravanan, eds. Performance (COP) Analysis of a Vapour Compression Refrigeration System component with Nano Coating. Tiruppur, Tamil Nadu, India: Association of Scientists, Developers and Faculties, 2016.

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Dai, Lei. Vapor compression air conditioning system modelling and control. 2006.

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Park, Daesik. The application of model reference adaptive control for vapour compression systems. 2007.

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Book chapters on the topic "Vapour compression system"

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Nagori, Ankur, Rubina Chaudhary, and S. P. Singh. "Dehydration of Vegetables Through Waste Heat of Vapour Compression Refrigeration System." In Springer Proceedings in Energy, 921–29. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0235-1_70.

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Das, Pinaki, Dheeraj Chhabra, Mukul Krishnatrey, and Mayur. "Analysis of Vapour Compression Refrigeration System in Terms of Convective Heat Transfer." In Lecture Notes in Mechanical Engineering, 873–83. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5463-6_77.

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Kaushik, Rajneesh, Rajeev Kamal Sharma, Mohit Kalsia, and Kundan Lal. "Experimental Analysis of Hydrocarbon Refrigerant and CuO Nano-Particles Based Vapour Compression System." In Advances in Engineering Materials, 81–92. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6029-7_8.

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Vullloju, Sreedhar, K. Krishna Reddy, and Madhu Kumar Patil. "Effect of Condenser Coil Profile and Subcooling on Performance of Vapour Compression Refrigeration System." In Learning and Analytics in Intelligent Systems, 413–23. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-24314-2_50.

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Shaik, Sharmas Vali, and T. P. Ashok Babu. "Theoretical Evaluation of Energy Performance of a Vapour Compression Refrigeration System Using Sustainable Refrigerants." In Intelligent Manufacturing and Energy Sustainability, 361–70. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1616-0_35.

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Elumalai, P., R. Vijayan, V. Subburam, and S. Maniraj. "Enhancement of Energy Efficiency Using Environmentally Benign Refrigerant Blends in Vapour Compression Refrigeration System." In Lecture Notes in Mechanical Engineering, 1021–33. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4739-3_88.

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Solanki, Naveen, Akhilesh Arora, and Raj Kumar Singh. "Performance Comparison of Refrigerants HFO1234yf and HFO1234ze in a Vapour Compression Refrigeration System Operating Under Fouled Conditions." In Lecture Notes in Mechanical Engineering, 219–36. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8304-9_16.

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Llopis, Rodrigo, Daniel Sánchez, and Ramón Cabello. "Refrigerants for Vapor Compression Refrigeration Systems." In Heat Transfer, 463–522. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315368184-16.

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Rasmussen, Bryan P., Christopher Price, Justin Koeln, Bryan Keating, and Andrew Alleyne. "HVAC System Modeling and Control: Vapor Compression System Modeling and Control." In Intelligent Building Control Systems, 73–103. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68462-8_4.

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Gicquel, Renaud. "Evaporation, mechanical vapor compression, desalination and drying by hot gas." In Energy Systems, 469–92. 2nd ed. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003175629-21.

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Conference papers on the topic "Vapour compression system"

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Sayyad, Siraj Y., and U. S. Wankhede. "Experimental Analysis on Vapour Compression-Thermoelectric Hybrid Refrigeration System." In 2015 7th International Conference on Emerging Trends in Engineering & Technology (ICETET). IEEE, 2015. http://dx.doi.org/10.1109/icetet.2015.43.

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Bergero, Stefano, Anna Chiari, and Enrico Nannei. "Vapour Compression and Liquid Desiccant Hybrid System for Air Conditioning." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95541.

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The present study examines the performance of a hybrid air-conditioning system in which a vapour compression inverse cycle is integrated with an air dehumidification system working with hygroscopic solution and hydrophobic membrane. This approach may prove to be a valid alternative to the traditional summertime air-conditioning system, which involves cooling the air to below its dew point and subsequently reheating it. The system examined simultaneously cools and dehumidifies the air in an air-LiCl solution membrane vapour exchanger before it enters the conditioned environment. The LiCl solution is cooled by means of a vapour compression inverse cycle that uses the refrigerant KLEA 407C. The heat rejected by the condenser is used to regenerate the solution. A SIMULINK calculation programme was used to simulate the system in steady-state conditions. The performance of the system was analysed on varying significant operating parameters and was compared with that of a traditional direct-expansion air-conditioning plant. The results of the simulations revealed significant power saving which, in certain operating conditions, was as much as 50%.

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Christodoulaki, Roza I., Emmanuil D. Rogdakis, and Irene P. Koronaki. "Hybrid Liquid Desiccant/Vapour Compression Air-Conditioning Systems: A Critical Review." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59344.

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Hybrid Liquid Desiccant Cooling / Vapour Compression Systems is an environmentally friendly technology used to condition the internal environment of buildings. In contrast to conventional vapor compression air conditioning systems, in which the electrical energy drives the cooling cycle, desiccant cooling is heat driven; therefore, hybrid LDC/VCS have the potential to utilise cleaner energy sources such as gas, hot water, waste heat or solar thermal energy. In hybrid LDC/VCS, the latent cooling load is handled by the desiccant dehumidifier, while the sensible is handled by a conventional VCS. Hybrid systems combining liquid desiccant cooling with Vapor Compression Systems, Vapor Absorption Systems and Solar Collectors use less electrical energy compared to conventional air-conditioning alone, while these savings rise as the latent load increases. Unlike other surveys on desiccant cooling, this review focuses on a detailed coverage of the hybrid LDC/VC systems. Commonly used liquid desiccants are compared towards their physical properties. Hybrid LDC/VCS employing various components and features are summarized, while different system configurations are schematically presented. Key factors for the hybrid system performance are the desiccant material, the design variables and the conduction of experiments prior to operation.

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Anbarasu, T., and S. Pavithra. "Vapour compression refrigeration system generating fresh water from humidity In the air." In International Conference on Sustainable Energy and Intelligent Systems (SEISCON 2011). IET, 2011. http://dx.doi.org/10.1049/cp.2011.0338.

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Dalkilic¸, Ahmet Selim, and Somchai Wongwises. "Comparison of Various Alternative Refrigerants for Vapour Compression Refrigeration Systems." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44267.

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Single-stage vapour compression refrigeration system was compared with an actual vapour compression cycle, single-stage process with internal heat exchanger, and a two-stage process with economiser using the refrigerants of HCFC-22, CFC-502 and their alternatives such as HFC-134a, HFC-32, HFC-152a, HFC-404A, HFC-407C, HFC-507, HFC-410A. A theoretical performance study on a cascade refrigeration system was performed using two refrigeration cycles connected through the heat exchanger in the middle working as the evaporator for the high pressurized cycle and condenser for the low pressurized cycle. Other performance study was performed using a two-stage cascade refrigeration system having low and high pressure compressors connected through the mixing chamber in the middle. The condensation temperatures were between 30 and 50 °C, evaporation temperatures were between −50 °C and 5 °C and heat exchanger and economiser temperatures were kept as constant for the comparisons. Some of the alternative refrigerants’ coefficients of performance values are found to be higher than their base traditional pure refrigerants. The effects of the main parameters of performance analysis such as refrigerant type, degree of subcooling, and superheating on the performance coefficient, refrigerant charge rate and volumetric refrigeration capacity are investigated for various operating conditions as case studies.

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Mahmood, Yaser. "A Review of a Mechanical Vapour Compression Refrigeration System: Environment and Performance Challenge." In Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020. EAI, 2020. http://dx.doi.org/10.4108/eai.28-6-2020.2298158.

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Krishnan, B. Pitchia, R. Vijayan, K. Gokulnath, S. Vivek, and G. Sathyamoorthy. "Experimental analysis of a vapour compression refrigeration system by using nano refrigerant (R290/R600a/Al2O3)." In INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5117995.

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Mazumdar, S., S. Bhattacharyya, and M. Ram Gopal. "Compressor Driven Metal Hydride Cooling Systems: Simulation and System Dynamics." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58418.

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A comprehensive mathematical model to study the performance parameters of compressor driven metal hydride systems is presented. The dynamics of the compressor and the conditioned space has been taken into account. The model also accommodates the transient nature of the external fins. The effect of size and geometry of the heat exchanger has been given due importance while calculating the external heat transfer coefficient of the metal hydride reactors. A 1 TR system is designed using MmNi4.5Al0.5 as the metal hydride and its operating characteristics are studied. The average COP and SP power obtained are around 3.1 and 125 W/kg respectively. It is seen that compressor remains idle for 30% of the time during stable cycling. The problem of large initial compressor loads during cut-in as is encountered in vapour compression systems are not faced in such systems. Moreover the compressor is not overloaded during sudden load changes.

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Roy, Ranendra, and Bijan Kumar Mandal. "Thermo-economic Assessment and Multi-Objective Optimization of Vapour Compression Refrigeration System using Low GWP Refrigerants." In 2019 8th International Conference on Modeling Simulation and Applied Optimization (ICMSAO). IEEE, 2019. http://dx.doi.org/10.1109/icmsao.2019.8880390.

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Zin Thu Aung, Mi Sandar Mon, and Soe Soe Nu. "Theoretical investigation of energy saving for vapour compression air conditioning system by using solar thermal energy." In 2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON). IEEE, 2016. http://dx.doi.org/10.1109/ecticon.2016.7561488.

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Reports on the topic "Vapour compression system"

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Katipamula, Srinivas, Peter Armstrong, Weimin Wang, Nicholas Fernandez, Heejin Cho, W. Goetzler, J. Burgos, R. Radhakrishnan, and C. Ahlfeldt. Development of High-Efficiency Low-Lift Vapor Compression System - Final Report. Office of Scientific and Technical Information (OSTI), March 2010. http://dx.doi.org/10.2172/976987.

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