Exergetic analysis of a double stage LiBr–H2O thermal compressor cooled by air/water and driven by low grade heat

Izquierdo, M.; Venegas, M.; García, Nelson Afanador; Palacios, E.

doi:10.1016/j.enconman.2004.06.016

Cited by 25 publications

(4 citation statements)

References 15 publications

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“…Reddy et al [64] presented the exergetic performance of 50 MW solar power plant having parabolic dish Stirling engine and detected that the energy and exergy efficiencies of whole system were obtained to be 77.8% and 32.0%, respectively. Izquierdo et al [65] concluded after their study that the double stage system has about 22% less exergetic efficiency than the single effect one and 32% less exergetic efficiency than the double effect one. In another study, Izquierdo et al (2005) [66] observed that the exergetic efficiency of the double stage cycle considered was lower than that of the single and double effect cycles because it worked with heat at lower temperature.…”

Section: Exergetic Efficiencymentioning

confidence: 98%

“…Izquierdo et al [65] concluded after their study that the double stage system has about 22% less exergetic efficiency than the single effect one and 32% less exergetic efficiency than the double effect one. In another study, Izquierdo et al (2005) [66] observed that the exergetic efficiency of the double stage cycle considered was lower than that of the single and double effect cycles because it worked with heat at lower temperature. The double stage system had about 22% less exergetic efficiency than the single effect one and 32% less exergetic efficiency than the double effect one.…”

Section: Exergetic Efficiencymentioning

confidence: 98%

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A Review on Exergy Analysis of Solar Refrigeration Technologies

Wouagfack¹,

Tenkeng²,

Lissouck³

et al. 2020

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Solar energy is becoming more and more useful in the modern day life in industrial, domestic and commercial sectors, because of his cleanliness from an environmental point of view and also contributes to the reduction of greenhouse effect gases such as CO 2 . Exergy analysis is a thermodynamic analysis technique based on the Second Law of Thermodynamics, which provides an alternative and illuminating means of assessing and comparing processes and systems rationally and meaningfully. Exergy analysis can assist in improving and optimizing designs. In this paper, the exergy analysis of solar thermal refrigeration cyles is reviewed. A review of the research state of art of the solar absorption and adsorption refrigeration technologies is also carried out. The cycles involved in these technologies are: open, closed, continuous and intermittent cycles. An overview of mesures of merit with regard to exergy (exergetic efficiency, exergy losses, exergy improvement and exergetic coefficient of performance) is presented. Besides, an historical and chronological view is done on the development scenario of exergy analysis in the world from 1824 until 2014. The main mathematical relations for the simulation of those cycles are presented.

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Section: Exergetic Efficiencymentioning

confidence: 98%

Section: Exergetic Efficiencymentioning

confidence: 98%

A Review on Exergy Analysis of Solar Refrigeration Technologies

Wouagfack¹,

Tenkeng²,

Lissouck³

et al. 2020

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“…When the heat source temperature is low, it is not possible to operate the single-effect cycle. Srikhirin et al [11] proposed a double-absorbing cooling cycle. The double-acting solution pump pressurizes the refrigerant at the outlet of the vaporizer twice, so that the system can produce a cooling capability at a lower temperature.…”

Section: Introductionmentioning

confidence: 99%

Waste Heat Recycling Absorption Refrigeration Circulation System

Wang

Zhou

Cai

et al. 2023

J. Phys.: Conf. Ser.

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To maximize energy use, this paper designs a lithium bromide absorption refrigeration system that is used to recycle and use low-temperature energy and industrial residual heat. Firstly, the mathematical model of the system is established using the lithium bromide aqueous solution status equation and the equation of the state of water and steam to obtain the state parameters in the thermodynamic calculation process of the system. Secondly, according to the principle of mass economy, energy saving, and heat transfer, the thermodynamic parameters of each process of the system are obtained to assist the design of the system. Finally, the influence of some key parameters on the system is simulated and analyzed to obtain the optimal parameters which can make the system recovery efficiency the highest. The simulation results show that the system conceived in this article can efficiently recycle waste gas and achieve the purpose of refrigeration. Therefore, it has a certain value of popularization.

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“…Several computer models for describing the performance characteristics of absorption chillers are shown in (Joudi and Lafta, 2001;Karamangil et al, 2010;Klomfar and Pátek, 2006;Lucas et al, 2004;Sumathy and Li, 2001). In addition, the use of the solar energy in an absorption heat pump system has been investigated (Assilzadeh et al, 2005;Balghouthi et al, 2005;Eicker and Pietruschka, 2009;Fan et al, 2007;He et al, 2009;Mazloumi et al, 2008).The exergy analysis of absorption cooling systems without solar collector is made by several authors (BenEzzine et al, 2005;Gebreslassie et al, 2010;Izquierdo et al, 2005;Talbi and Agnew, 2000;Ucar and Inalli, 2006). S.C. Kaushik and A. Arora (2009) present the exergy analysis and the effects of generator, absorber and evaporator temperatures on the energy and exergy performances of the single effect water-lithium bromide absorption system without solar collector.…”

Section: Introductionmentioning

confidence: 99%

Parametric study and exergy analysis of solar water-lithium bromide absorption cooling system

Touaibi

Feidt

Abbès

2013

IJEX

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This paper presents the energy and exergy analysis of single effect water lithium bromide absorption cooling system driven by the heat supplied by a field of solar thermal collectors with a cooling capacity of 10 kW. The work is devoted to the study, the evaluation and distribution of the destroyed exergy for each component constituting this kind of system. The thermodynamic models have been derived using the first and second laws of thermodynamics. These models are employed in a computer program using the Engineering Equation Solver (EES) software to perform the calculations and a sensitivity analysis to parameters is also presented. The results indicate that the contribution of some components to the overall exergy loss is very important. Exergy analysis illustrates also that the distribution of the destroyed exergy in the system between components depends strongly on the working temperatures.

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Exergetic analysis of a double stage LiBr–H2O thermal compressor cooled by air/water and driven by low grade heat

Cited by 25 publications

References 15 publications

A Review on Exergy Analysis of Solar Refrigeration Technologies

A Review on Exergy Analysis of Solar Refrigeration Technologies

Waste Heat Recycling Absorption Refrigeration Circulation System

Parametric study and exergy analysis of solar water-lithium bromide absorption cooling system

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