Off-design performance analysis and optimization of the power production by an organic Rankine cycle coupled with a gas turbine in an offshore oil platform

2019 ◽  
Vol 196 ◽  
pp. 1037-1050 ◽  
Author(s):  
Max Mauro L. Reis ◽  
Jorge Alejandro V. Guillen ◽  
Waldyr L.R. Gallo
Keyword(s):  
Performance Analysis ◽  
Gas Turbine ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Power Production ◽  
Design Performance ◽  
Offshore Oil

Preliminary design and off-design performance analysis of an Organic Rankine Cycle for geothermal sources

2015 ◽  
Vol 96 ◽  
pp. 175-187 ◽  
Author(s):  
Dongshuai Hu ◽  
Saili Li ◽  
Ya Zheng ◽  
Jiangfeng Wang ◽  
Yiping Dai
Keyword(s):  
Performance Analysis ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Preliminary Design ◽  
Design Performance

scholarly journals Exergoeconomic and Environmental Modeling of Integrated Polygeneration Power Plant with Biomass-Based Syngas Supplemental Firing

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 6018
Author(s):  
Fidelis. I. Abam ◽  
Ogheneruona E. Diemuodeke ◽  
Ekwe. B. Ekwe ◽  
Mohammed Alghassab ◽  
Olusegun D. Samuel ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Unit Cost ◽  
Organic Rankine Cycle ◽  
Energy Transition ◽  
Rankine Cycle ◽  
Power Production ◽  
Environmental Modeling ◽  
Exergy Efficiency ◽  
Optimum Operating ◽  
Cost Rate

There is a burden of adequate energy supply for meeting demand and reducing emission to avoid the average global temperature of above 2 °C of the pre-industrial era. Therefore, this study presents the exergoeconomic and environmental analysis of a proposed integrated multi-generation plant (IMP), with supplemental biomass-based syngas firing. An in-service gas turbine plant, fired by natural gas, was retrofitted with a gas turbine (GT), steam turbine (ST), organic Rankine cycle (ORC) for cooling and power production, a modified Kalina cycle (KC) for power production and cooling, and a vapour absorption system (VAB) for cooling. The overall network, energy efficiency, and exergy efficiency of the IMP were estimated at 183 MW, 61.50% and 44.22%, respectively. The specific emissions were estimated at 122.2, 0.222, and 3.0 × 10−7 kg/MWh for CO2, NOx, and CO, respectively. Similarly, the harmful fuel emission factor, and newly introduced sustainability indicators—exergo-thermal index (ETI) and exergetic utility exponent (EUE)—were obtained as 0.00067, 0.675, and 0.734, respectively. The LCC of $1.58 million was obtained, with a payback of 4 years, while the unit cost of energy was estimated at 0.0166 $/kWh. The exergoeconomic factor and the relative cost difference of the IMP were obtained as 50.37% and 162.38%, respectively. The optimum operating parameters obtained by a genetic algorithm gave the plant’s total cost rate of 125.83 $/hr and exergy efficiency of 39.50%. The proposed system had the potential to drive the current energy transition crisis caused by the COVID-19 pandemic shock in the energy sector.

Off-design performance analysis of a solar-powered organic Rankine cycle

2014 ◽  
Vol 80 ◽  
pp. 150-157 ◽  
Author(s):  
Jiangfeng Wang ◽  
Zhequan Yan ◽  
Pan Zhao ◽  
Yiping Dai
Keyword(s):  
Performance Analysis ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Design Performance ◽  
Solar Powered

scholarly journals Assessment of Organic Rankine Cycle Part-Load Performance as Gas Turbine Bottoming Cycle with Variable Area Nozzle Turbine Technology

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7916
Author(s):  
Mohammad Ali Motamed ◽  
Lars O. Nord
Keyword(s):  
Gas Turbine ◽  
Oil And Gas ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
The Other ◽  
Power Cycles ◽  
Part Load ◽  
Offshore Oil And Gas ◽  
Offshore Oil ◽  
Cycle Efficiency

Power cycles on offshore oil and gas installations are expected to operate more at varied load conditions, especially when rapid growth in renewable energies puts them in a load-following operation. Part-load efficiency enhancement is advantageous since heat to power cycles suffer poor efficiency at part loads. The overall purpose of this article is to improve part-load efficiency in offshore combined cycles. Here, the organic Rankine bottoming cycle with a control strategy based on variable geometry turbine technology is studied to boost part-load efficiency. The Variable Area Nozzle turbine is selected to control cycle mass flow rate and pressure ratio independently. The design and performance of the proposed working strategy are assessed by an in-house developed tool. With the suggested solution, the part-load organic Rankine cycle efficiency is kept close to design value outperforming the other control strategies with sliding pressure, partial admission turbine, and throttling valve control operation. The combined cycle efficiency showed a clear improvement compared to the other strategies, resulting in 2.5 kilotons of annual carbon dioxide emission reduction per gas turbine unit. Compactness, autonomous operation, and acceptable technology readiness level for variable area nozzle turbines facilitate their application in offshore oil and gas installations.

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