Experimental studies on combined cooling and power system driven by low-grade heat sources

Kumar, G. Praveen; Saravanan, R.; Coronas, Alberto

doi:10.1016/j.energy.2017.04.066

Cited by 49 publications

(17 citation statements)

References 23 publications

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“…From the thermo‐economic analysis, the authors found that the minimum production cost for the combined system was 19.44 $/GJ, which is lower than the values reported by Mahmoundi and Kordlar 60 . Kumar et al 64 analyzed an experimental hybrid system with a stream division after the rectifier to vary the power/cooling ratio. Figure 14 shows photographs of the system developed.…”

Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 84%

“…Photograph of the hybrid system reported by Kumar et al 64 [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 99%

“…Despite having obtained the highest efficiency, according to the authors, because of the low power produced, the proposed system is more suitable for cooling production rather than for power production. All the studies were theoretical, with the exception of the experimental work reported by Kumar et al 64 They evaluated a hybrid system with a flow division at the exit of the rectifier, achieving a thermal efficiency of 13%.…”

Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 99%

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Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Pacheco‐Reyes

Rivera

2021

Int J Energy Res

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Summary A comprehensive review of thermodynamic cycles for the simultaneous production of power and cooling is presented. The study not only actualizes the bibliographic reviews previously realized by other authors regarding cycles such as Kalina, Goswami, or modifications of them. This review additionally includes an overview of hybrid cycles and other novel cycles reported in the literature. The hybrid cycles included in the study are systems integrated by two or three conventional cycles, mainly composed of Brayton, Rankine, and ORC for power generation; and compression, absorption, and ejector cycles for cooling production. The other novel cycles mentioned are thermodynamic cycles, which considerably differ from all the others. By using internal rectification, the Goswami cycle increased its efficiency by about 5%; however, by adding diverse components, as a condenser and a subcooler, the efficiency was significantly improved due to the considerable increase of the cooling production. Organic Rankine cycles integrating absorption refrigeration cycles are, in general, the most efficient hybrid cycles, reaching thermal efficiencies close to 40% for the simultaneous production of power and cooling. If a third output was provided, as heating or water distillation, the energy efficiencies were as high as 90%. The main problem with these systems is that, in general, they are too complex and costly because of the considerable number of components. The highest exergy destruction values are reported in solar collectors when used, followed by boilers or generators, and absorbers. The lower production costs were reported with systems integrating a Brayton cycle, an organic Rankine cycle, and an ejector‐cooling cycle. The disadvantage of these systems is that they need high operating temperatures.

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Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 84%

“…Photograph of the hybrid system reported by Kumar et al 64 [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 99%

Section: Hybrid Systems Integrated By Two Cyclesmentioning

confidence: 99%

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Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Pacheco‐Reyes

Rivera

2021

Int J Energy Res

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“…When a water-ammonia mixture is used, a rectifier is typically considered for improved performance, even for simple configurations [53]. Such a system has been experimentally analysed [54], providing a chiller regime COP of approximately 0.6 from a 133 °C temperature of the generated vapour. The expander was only simulated using only an orifice.…”

Section: Separate Thermodynamic Cycles Coupled By Workmentioning

confidence: 99%

Absorption Power and Cooling Combined Cycle with an Aqueous Salt Solution as a Working Fluid and a Technically Feasible Configuration

Novotny¹,

Szucs²,

Spale³

et al. 2021

Preprint

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Combined systems for power production and thermally activated cooling have a high potential for improving the efficiency and utilisation of thermal systems. In this regard, various configurations have been proposed and are comprehensively reviewed. They are primarily based on absorption systems and the implementation of multiple levels of complexity and flexibility. The configuration of the absorption power and cooling combined cycle proposed herein has wide commercial applicability owing to its simplicity. The configuration of the components is not new. However, the utilisation of aqueous salt solutions, the comparison with ammonia chiller and with absorption power cycles, the focus on parameters that are important for real-life applications, and the comparison of the performances for constant heat input and waste heat recovery are novel. The proposed cycle is also compared with a system based on the organic Rankine cycle and vapour compression cycle. An investigation of its performance proves that the system is suitable for a given range of boundary conditions from a thermodynamic standpoint, as well as in terms of system complexity and technical feasibility. New possibilities with regard to added power production have the potential to improve the economics and promote the use of absorption chiller systems.

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“…These cycles use low-grade and mid-grade heat sources and could utilize solar thermal collectors to produce power and cooling. A combined power and cooling system using low-grade heat source was studied experimentally by Kumar et al 11 Their system operated in two modes: cooling mode and power and cooling mode. In cooling mode, the COP of the system at cooling temperature of À8 C, varied from 0.51 to 0.57 and the exergy e±ciency changed between 16% and 24%.…”

Section: Introductionmentioning

confidence: 99%

A Totally Heat-Driven Refrigeration System Using Low-Temperature Heat Sources for Low-Temperature Applications

Seyfouri

Ameri

Mehrabian

2019

Int. J. Air-Cond. Ref.

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In the present study, a totally heat-driven refrigeration system is proposed and thermodynamically analyzed. This system uses a low-temperature heat source such as geothermal energy or solar energy to produce cooling at freezing temperatures. The proposed system comprises a Rankine cycle (RC) and a hybrid GAX (HGAX) refrigeration cycle, in which the RC provides the power requirement of the HGAX cycle. An ammonia–water mixture is used in both RC and HGAX cycles as the working fluid. A comparative study is conducted in which the proposed system is compared with two other systems using GAX cycle and/or a single stage cycle, as the refrigeration cycle. The study shows that the proposed system is preferred to produce cooling at temperatures from 2∘C to [Formula: see text]C. A detailed parametric analysis of the proposed system is carried out. The results of the analysis show that the system can produce cooling at [Formula: see text]C using a low-temperature heat source at 133.5∘C with the exergy efficiency of about 20% without any input power. By increasing the heat source temperature to 160∘C, an exergy efficiency of 25% can be achieved.

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Experimental studies on combined cooling and power system driven by low-grade heat sources

Cited by 49 publications

References 23 publications

Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Thermodynamic cycles for the simultaneous production of power and cooling: A comprehensive review

Absorption Power and Cooling Combined Cycle with an Aqueous Salt Solution as a Working Fluid and a Technically Feasible Configuration

A Totally Heat-Driven Refrigeration System Using Low-Temperature Heat Sources for Low-Temperature Applications

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