Proposal of a combined heat and power plant hybridized with regeneration organic Rankine cycle: Energy-Exergy evaluation

Anvari, Simin; Jafarmadar, Samad; Khalilarya, Shahram

doi:10.1016/j.enconman.2016.06.002

Cited by 46 publications

(16 citation statements)

References 25 publications

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“…Moreover, the overall exergy efficiency of the subcritical rORC using R245fa as working fluid is found between 30% and 35% [77]. Energy and exergy-based analysis of a rORC assisted to a combined heat and power plant is studied by Anvari et al They found that the component exergy destruction was maximum in evaporator and minimum in the pumps [78]. The results of the studies are in line with the result of the present study.…”

Section: Comparison Of the Exergy Analysis Of The Subcritical And Supsupporting

confidence: 89%

Exergy Analysis and Performance Improvement of a Subcritical/Supercritical Organic Rankine Cycle (ORC) for Exhaust Gas Waste Heat Recovery in a Biogas Fuelled Combined Heat and Power (CHP) Engine Through the Use of Regeneration

2019

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In the present study, a subcritical and supercritical regenerative organic Rankine cycle (rORC) was designed. The designed rORCs assist a combined heat and power (CHP) engine, the fuel of which is biogas produced from anaerobic digestion of domestic wastes in Belgium. R245fa was selected as the working fluid for both the subcritical and supercritical rORC. During the parametric optimisation, the net power production, mass flow rate, exchanged heat in the regenerator, total pump power consumption, thermal and exergetic efficiencies of rORC were calculated for varying turbine inlet temperatures and pressures. After parametric optimisation of the rORC, the results were compared with the results of the previous study, in which only a simple ORC is analysed and parametrically optimised. Moreover, the effect of the regenerator was revealed by examining all results together. Finally, the exergetic analysis of the best performing subcritical and supercritical rORC was performed. Furthermore, the results of the present and previous studies were considered together and it is clearly seen that the subcritical rORC shows the best performance. Consequently, by using the subcritical rORC, the disadvantages of the using simple ORC (low performance) and supercritical cycle (safety, investment) can be eliminated and system performance can be improved.

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Section: Comparison Of the Exergy Analysis Of The Subcritical And Supsupporting

confidence: 89%

Exergy Analysis and Performance Improvement of a Subcritical/Supercritical Organic Rankine Cycle (ORC) for Exhaust Gas Waste Heat Recovery in a Biogas Fuelled Combined Heat and Power (CHP) Engine Through the Use of Regeneration

2019

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“…1 In this regard, the study of clean energy-driven systems, with the production of energy types or energy-based products can be introduced as an alternative method for the conventional energy conversion industry. 2 Solar thermal collector technology in different temperature ranges with the ability to generate different products is one of these alternative methods. Consequently, hightemperature solar collectors can be used in power plants.…”

Section: Introductionmentioning

confidence: 99%

Design and parametric study of a novel solar‐driven trigeneration application utilizing a heliostat field with thermal energy storage

Sheykhlou

Jafarmadar

Khalilarya

2021

Intl J of Energy Research

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The trend of global environmental pollution underscores the design and application of technologies capable of operating with clean energy sources such as solar energy. Toward this, the current study presents a novel design of combined cooling, heating, and power production system that utilizes a solar-based heliostat technology with thermal energy storage in combination with a modified Kalina cycle. This cycle has been improved by the smart use of multi-heat recovery method and the employment of an ejector. The performance of this system has been studied in three solar radiation modes, including solar mode (solar radiation in the early and late time of a day), solar and storage mode (solar radiation in the middle of a day), and storage mode (night time). This study is based on the development of a fully validated numerical modeling for these three modes and the use of a parametric study including the effect of several important parameter changes on generated electricity, power to cooling and heating ratios, and energy and exergy efficiencies (electrical and overall).The results show, the net generate electricity of the system in the solar mode, solar and storage mode, and storage mode was 3086, 1891, and 1668 kW, respectively. The electrical energy efficiency for the mentioned modes was 15.81%, 5.38%, and 7.84%, and also the electrical exergy efficiency was 6.56%, 2.81%, and 4.14%, respectively. Finally, the overall energy efficiency for these modes was 66.7%, 39.4%, and 63.9%, and the overall exergy efficiency was 8.95%, 4.86%, and 7.50%, individually.

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“…Considering the increasing demand of electrical supply reported for Anvari et al (2016), one of the possible generating alternatives is the use of forest biomass, originating valuable forms of energy by different processes, such as thermal, biological, and mechanical (Mohan et al, 2006;Bridgwater, 2012). Discussions about reducing greenhouse gas emissions have led to discussions to mitigate their effects on the climate (Klingenberg et al 2020).…”

Section: Introductionmentioning

confidence: 99%

The use of the combined cycle for the generation of electric energy by the gases obtained from the carbonization of wood using

Vieira¹,

Teixeira²,

Silva³

et al. 2021

RSD

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The effluents from carbonization or pyrolysis and wood charcoal have aggregated thermal energy and, in conventional charcoal kilns, part of the wood is burned to ignite the burning in the kilns and the effluents generated are dispensed in the atmosphere and in the soil, which causes energy losses and environmental pollution. In this study we seek a clean and sustainable alternative to produce energy, in addition to the search for a system with satisfactory performance in the generation of electric energy. The objective of this study was to evaluate how much electricity can be produced from wood carbonization effluents by ONDATEC technology, using the Brayton and Rankine cycle, also known as Combined Cycle. This method presents a high power generation efficiency, around 50%, compared to other generation systems. A field experiment was carried out from October 21st to 24th, 2010 to determine the calorific value of wood carbonization effluents, using a microwave oven, (condensable and non-condensable gas), in the city of Uberaba -Mg, Brazil. The data generated in this study reveals important information for companies looking for a way to produce clean and renewable electricity from reforestation wood, in addition to the effort to minimize environmental pollution, ensure sustainability in production systems and the growing search for new sources of energy. A complete description of the experiment, including details of the project, is presented in this work.

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Proposal of a combined heat and power plant hybridized with regeneration organic Rankine cycle: Energy-Exergy evaluation

Cited by 46 publications

References 25 publications

Exergy Analysis and Performance Improvement of a Subcritical/Supercritical Organic Rankine Cycle (ORC) for Exhaust Gas Waste Heat Recovery in a Biogas Fuelled Combined Heat and Power (CHP) Engine Through the Use of Regeneration

Exergy Analysis and Performance Improvement of a Subcritical/Supercritical Organic Rankine Cycle (ORC) for Exhaust Gas Waste Heat Recovery in a Biogas Fuelled Combined Heat and Power (CHP) Engine Through the Use of Regeneration

Design and parametric study of a novel solar‐driven trigeneration application utilizing a heliostat field with thermal energy storage

The use of the combined cycle for the generation of electric energy by the gases obtained from the carbonization of wood using

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