Analysis of a developed Brayton cycled CHP system using ORC and CAES based on first and second law of thermodynamics

Nouri, Milad; Namar, Mohammad Mostafa; Jahanian, Omid

doi:10.1007/s10973-018-7316-6

Cited by 30 publications

(10 citation statements)

References 29 publications

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“…Studying hybrid systems coupled with renewable energy systems to boost total efficiency is the hottest topic among researchers [8,9]. Nouri [10] proposed and simulated a new system of combined heat and power with the Brighton cycle as the main electricity generation unit using renewable energy system, compressed air energy system, and organic Rankine and Rankine cycles for residential approaches. Vakilabadi [11] evaluated the process of a ZLD system using energy and exergy analysis.…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine

Norouzi

2021

Tr Ren Energy

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The combined heating and power (CHP) system is among the most effective ways to increase energy and exergy efficiencies, reduce fuel consumption, and reduce operational costs. In this study, the combination of an electricity and heat CHP system with the prime movers of a gas turbine and a horizontal axis wind turbine under the strategy of providing electric charge has been investigated. This study aims to evaluate the effect of the wind turbine on the system. The Blade Element Momentum Theory (BEM) is used to model the wind turbine under different wind speeds, pitch angle, and tip speed ratios to show their effect on the gas turbine system under different combustion chamber temperatures and pressure ratios. The results show that the proposed CHP system has significant advantages over the separate production system. It is shown that the best operating condition for the wind turbine is at the wind speed of 12 m/s, the pitch angle of 5°, and the tip speed ratio of 3. Moreover, the wind speed and tip speed ratio effects become considerable at the high-pressure ratios of more than ten and the combustion chamber temperature below 1250°C on the total system's exergy efficiency. Also, compared to the separate production mode, operational costs and fuel consumption are reduced by about 55% and 60%, respectively. Finally, taking into account the interest rate, the payback period will be equal to 5.4 years.

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Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine

Norouzi

2021

Tr Ren Energy

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“…In this segment, the energy balance and governing equations to simulate the hybrid integrated structure's subsystems have been precisely analyzed. Neglecting the variation of the potential and kinetic energies, mass and energy conservation equations at the steady-state condition for each component can be obtained as follows [32],…”

Section: Orc and Geothermalmentioning

confidence: 99%

A new principal design of a sustainable power plant to produce combined Hydrogen-Carbon dioxide fuel for industrial applications

Nouri

Miansari

Mahmoudi

2022

Preprint

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In this paper, an innovative geothermal-based hybrid energy structure incorporated with power production units and industrial fuels is developed and evaluated. This integrated structure comprises an organic Rankine cycle power plant, lead-acid battery, proton exchange membrane electrolyzer, and oxyfuel power plant to generate power, hydrogen, and liquid carbon dioxide simultaneously. The comprehensive energy, exergy, exergoeconomic, and sensitivity analyses are conducted. The geothermal unit provides 9390 kW thermal power to run the organic Rankine cycle, which is designed using different working fluids to produce initial power to drive the water electrolyzer system (453 kW initial power). The electrolyzer system produces 80 m 3 /h hydrogen as the main product to be stored in a reservoir and 40 m 3 /h oxygen to drive an oxyfuel power plant that generates 41.11 MW power with 79.91% exergy efficiency. The amount of liquid carbon dioxide production is around 10.186 kg/s. For specified conditions, the total power generation is about 42 MW and the exergoeconomic analysis illustrates that the maximum capital cost occurs in oxyfuel power plant’s compressors and turbines with 938.31 $/h and 732.45 $/h, respectively. The proposed integrated structure can certainly provide a new approach toward generating power and industrial fuels utilizing geothermal renewable energy sources.

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“…High temperature electrolysers are more advantageous than low temperature ones due to fast electrochemical reactions and good ion conduction at high temperatures [10,11], while they need more inlet power and heat. Demanded heat and power can be provided by different thermodynamic cycles employing solar [12], wind turbine [13], nuclear [14] and geothermal [15] energy technologies. The overall solar based proposed system by Ozcan and Dincer [16] had 18.8% energy and 19.9% exergy efficiencies, respectively.…”

Section: Nomenclaturementioning

confidence: 99%

The Energy and Exergy Analysis of Integrated Hydrogen Production System Using High Temperature Steam Electrolysis with Optimized Water Path

2019

IJE

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A B S T R A C TIn this research, solar-drived integrated Hydrogen production (HP) using high-temperature steam electrolysis (HTSE) is thermodynamically evaluated. This system includes an organic Rankine cycle (ORC), Rankine cycle, Brayton cycle, solar tower, and High Temperature Steam Electrolysis (HTSE). Solar energy supplies thermal energy. This heat source is applied for generating power. This energy is used for HTSE due to its demand in the form of electricity. First, we calculated inlet and outlet energy and their rates for whole subsystems. The results showed 50.77% overall and 31.63% exergy efficiencies related to power generation section and 92.85% overall energy and 91% exergy efficiencies related to hydrogen production section. Also in this research we found the importance of auxiliary equipment. Auxiliary equipment helps that significant amount of hydrogen production to be saved. This amount at 577 K is equal that produces 0.093 kg H2/s

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Analysis of a developed Brayton cycled CHP system using ORC and CAES based on first and second law of thermodynamics

Cited by 30 publications

References 29 publications

WITHDRAWN: Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine

WITHDRAWN: Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine

A new principal design of a sustainable power plant to produce combined Hydrogen-Carbon dioxide fuel for industrial applications

The Energy and Exergy Analysis of Integrated Hydrogen Production System Using High Temperature Steam Electrolysis with Optimized Water Path

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