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Relevant bibliographies by topics / Vapour absorption cycle

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Journal articles

Academic literature on the topic 'Vapour absorption cycle'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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Journal articles on the topic "Vapour absorption cycle"

1

Tariq, Mohammad, and Vinod Kumar Nema. "Theoretical investigation of a combined Kalina and vapour-absorption cycle." Journal of Energy in Southern Africa 26, no. 1 (2015): 113–24. http://dx.doi.org/10.17159/2413-3051/2015/v26i1a2227.

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A program has been developed to calculate enthalpies at the salient points (later referred to as stations) of a combined power and cooling cycle provided pressure, temperature, mixture concentration and condition are known at these points. The ammonia-water mixture, which is taken as the working fluid, may be at one of the following seven conditions namely, superheated vapour mixture, mixture of superheated component of ammonia and pseudo vapour component of water, saturated vapour mixture, wet vapour mixture, saturated liquid mixture, mixture of subcooled water and pseudo liquid ammonia and subcooled mixture of subcooled components of ammonia and water. The mixture boiling-point temperature and dew-point temperature, needed to establish the condition of the working fluid, are functions of absolute pressure, critical pressure and critical temperature of the mixture; later two depend on the mixture concentration and the corresponding critical values of water at the given station. Using typical values of the variables as listed above, enthalpies at all stations are predicted. The predicted enthalpies are close (within 3%) to those available in the literature except at two stations where the mixture was weak in ammonia and its temperature was either in the near vicinity of the mixture boiling-point temperature or below the saturation temperature of pure ammonia at the concerned pressure. Using the predicted values of enthalpies, thermal efficiency of the combined power and cooling cycle has been calculated.

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2

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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3

Eames, I. W., and S. Wu. "A theoretical and experimental study of a novel recompression absorption refrigeration cycle." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 215, no. 1 (2001): 75–87. http://dx.doi.org/10.1243/0957650011536589.

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This paper describes a novel vapour absorption refrigeration cycle which uses a steam ejector to enhance the concentration process of the cycle. The paper provides a complete description of the cycle and presents the results of a theoretical study before going on to describe and evaluate the outcomes of an experimental programme. The results of this investigation showed that with the addition of a steam ejector as described the coefficient of performance (COP) of the single-effect lithium bromide absorption cycle can be increased from about 0.7 to at least 1.0 without any increase in corrosion rates often associated with high temperature vapour generators used in conventional machines of this type.

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4

Paloso, G., and B. Mohanty. "Cascading vapour absorption cycle with organic rankine cycle for enhancing geothermal power generation." Renewable Energy 3, no. 6-7 (1993): 669–81. http://dx.doi.org/10.1016/0960-1481(93)90074-q.

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5

Cimsit, Canan, and Ilhan Tekin Ozturk. "Exergy analysis of vapour compression-absorption two-stage refrigeration cycle." International Journal of Exergy 35, no. 2 (2021): 210. http://dx.doi.org/10.1504/ijex.2021.10038625.

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6

Ozturk, Ilhan Tekin, and Canan Cimsit. "Exergy analysis of vapour compression-absorption two-stage refrigeration cycle." International Journal of Exergy 35, no. 2 (2021): 210. http://dx.doi.org/10.1504/ijex.2021.115648.

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7

WRIGHT, JONATHAN C., and JOHN MACHIN. "Water vapour absorption in terrestrial isopods." Journal of Experimental Biology 154, no. 1 (1990): 13–30. http://dx.doi.org/10.1242/jeb.154.1.13.

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Continuous and intermittent gravimetric measurements have identified active water vapour absorption (WVA) in three species of terrestrial Isopoda. Water activity thresholds for uptake lie in the range 0.92-0.95. Above the threshold, WVA shows non-saturated kinetics; the rectum apparently serves as a supplementary avenue for fluid resorption during rapid uptake. Standardized uptake fluxes, corrected for vapour pressure deficit, can be varied, allowing animals to balance water losses accurately over long periods. Blocking experiments have localised the ventral pleon as the uptake site. The pleopods display ventilatory cycling during WVA. Cycle frequency increases with humidity, compensating for changes in activity deficit between uptake fluid and air, and allowing uptake rate to be maximised. Freezing-point depression studies reveal hyperosmotic fluid in the ventral pleon. Osmolalities are compatible with prior uptake rates of the specimens studied. WVA would allow terrestrial isopods to regulate their water balance in external activities below the haemolymph activity (approximately 0.99) and above the uptake threshold. Liquid water - an alternative source for hydration - is rapidly absorbed across the hydrophilic cuticle, posing severe danger of drowning.

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8

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 (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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9

Sathiamourtty, A., K. Ashok, and B. Pavanan. "Thermodynamic Analysis of Vapour Absorption Refrigeration Cycle Using Different Working Fluids." International Journal of Applied Engineering Research 15, no. 9 (2020): 911. http://dx.doi.org/10.37622/ijaer/15.9.2020.911-917.

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10

Kanabar, Bhaveshkumar Kantilal, and Bharatkumar Maganbhai Ramani. "Energy and Exergy Analysis of Vapour Absorption Refrigeration Cycle—A Review." Journal of The Institution of Engineers (India): Series C 97, no. 3 (2016): 479–91. http://dx.doi.org/10.1007/s40032-015-0216-7.

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