Effect of the Vapour-Solution Interface Area on a Miniature Lithium-Bromide/Water Absorption Refrigeration System Equipped with an Adiabatic Absorber

Osta-Omar, Salem M.; Micallef, Christopher

doi:10.1016/j.egypro.2017.07.009

Cited by 5 publications

(4 citation statements)

References 9 publications

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“…Points (1-6) indicate the ammonium hydroxide solution cycle, whereas "the remaining points reflect the ammonia vapour cycle. The rich solution (1) is pumped through the solution heat exchanger (2) with higher pressure into the generator (3), where heat added to an ammonia-water vapour mixture, while the poor solution ( 4) is returned to the absorber via solution heat exchanger and flow restrictor (5,6). The ammonia-water vapour is purified in the rectifier by condensing the water vapour in the combination into a liquid".…”

Section: Ammonia-water Single Stage Absorption Refrigeration Systemmentioning

confidence: 99%

“…They showed that their design enabled quick start-up operation and adapted quickly to low/partial loads. Osta-Omar and Micallef [5] examined and optimized the vapour solution interface area on a miniature lithium bromide VARS, for various absorption rates. The miniature device could have applications for electronics cooling devices at miniature level.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Analysis of Performance Improvement of a Modified Vapour Absorption System (VAS-GAX) for Cooling Applications

Sivalingam¹,

Gopal²,

Pandey³

et al. 2021

IJHT

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Experiments on an enhanced “Generator-Absorber-Heat Exchanger” (GAX) Vapour Absorption System (VAS) for cooling purposes were carried out using water-ammonia in present study. The new experimental setup was fabricated using modern and complex technologies for the GAX absorption system which includes tiny heat exchangers, allowing the system to be both compact and efficient. The coefficient of performance (COP) of a system was analyzed for different temperatures of Generator, Condenser, Evaporator and Absorber. The results show that the maximum performance (COP=0.63) is achieved at 25℃ Generator temperature. The system has a low carbon footprint because it does not use effluent water or tower electricity and invention enables the recovery of hot air, which may then be used for several drying applications, including agricultural drying, resulting in a fully cascaded system with a three-fold increase in Coefficient of Performance (COP). A modified VAS-GAX absorption system in present analysis be a good fit for high-performance modern cooling applications.

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Section: Ammonia-water Single Stage Absorption Refrigeration Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of Performance Improvement of a Modified Vapour Absorption System (VAS-GAX) for Cooling Applications

Sivalingam¹,

Gopal²,

Pandey³

et al. 2021

IJHT

View full text Add to dashboard Cite

show abstract

“…To obtain heat we have required to set up a solar geyser. A study is given in this journal that compares different photovoltaic systems and their ef􀅫iciencies [5,6]. As absurd as it sounds the main driving force in solar absorption refrigeration systems is the Heat(thermal) power from solar energy collectors.…”

Section: B Rational Of the Studymentioning

confidence: 99%

Solar assisted vapor absorption cooling system: A review

2020

J. adv. tec. eng. res.

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Absorption Refrigeration System can play a vital role in electrical energy conservation because they can be operated on waste heat energy. The intermittent nature of solar power may be a dominant think about exploring well-designed thermal energy storages for consistent operation of solar thermal-powered vapor absorption systems. Our goal is to design the cooling unit based on a vapor absorption system. For this purpose, we have done a literature survey, mathematical modeling, simulations, and made computer-aided design models of our unit. We veri􀅫ied our component operating conditions.Thermal energy storage acts as a buffer and moderator between solar thermal collectors and generators of absorption chillers and signi􀅫icantly improves the system performance. Vapor absorption chillers are available in half, single, double, and triple-effect modes of operation and operate at temperatures starting from 75 to 220 o C to supply a cooling effect with COPs starting from 0.3 to 1.8. Thus, the choice of appropriate solar collectors and thermal energy storages are two signi􀅫icant decisions affecting the consistency of output of a vapor absorption cooling system. This review covers all the major aspects of such systems. It also covers the research work done on this subject till now. Though there is still room for a lot of research work in this area of refrigeration systems. Moreover, the conclusions and recommendations are also discussed.

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“…However, given the current overall trend towards saving IOP Publishing doi:10.1088/1742-6596/2520/1/012040 2 energy and reducing emissions, the lithium bromide absorption refrigeration system has a broader development perspective. Research on lithium bromide absorption refrigeration is widely available, among which the most important thing is the search for cooling circulation absorbing lithium bromide [7][8][9] .…”

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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Effect of the Vapour-Solution Interface Area on a Miniature Lithium-Bromide/Water Absorption Refrigeration System Equipped with an Adiabatic Absorber

Cited by 5 publications

References 9 publications

Experimental Analysis of Performance Improvement of a Modified Vapour Absorption System (VAS-GAX) for Cooling Applications

Experimental Analysis of Performance Improvement of a Modified Vapour Absorption System (VAS-GAX) for Cooling Applications

Solar assisted vapor absorption cooling system: A review

Waste Heat Recycling Absorption Refrigeration Circulation System

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