Efficiency and Exergy Enhancement of ORC Powered by Recovering Flue Gases-Heat System in Cement Industrials: a Case Study

Al-Rawashdeh, Hani; Gomaa, Mohamed R.; Mustafa, Ramadan J.; Hassan, A.O.

doi:10.15866/ireme.v13i3.16713

Cited by 5 publications

(6 citation statements)

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“…According to the Global Energy and CO 2 Status Report in 2018, the global energy-related CO 2 emissions rose to 1.7% at a historic high of 33.1 Gt CO 2 [10]. This increase has pushed the imperative in finding alternative energy sources that can reduce greenhouse gas emissions as well as supplement/replace the use of fossil fuels [11]. One particular alternative that has seen a surge in popularity in recent years is wind energy.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Environmental Impacts and Energy Performance of a Wind Farm System Utilizing the Life-Cycle Assessment Method: A Practical Case Study

et al. 2019

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The ever-increasing popularity of finding alternative forms of renewable energy has seen an increased interest and utilization of wind energy. The objective of this research therefore, is to evaluate the environmental impacts and energy performance of wind farms. This study was operationalized in Jordan using a life-cycle assessment (LCA) method. The environmental impact is evaluated through lifecycle emissions that include all emissions during various phases of the project. The energy performance is illustrated by the energy indicators. The latter is the energy payback ratio (EPR) and the energy payback time (EPT). This study was conducted on a 38 Vestas V112 3-MW wind turbine located in the southern region of Tafilah in Jordan that is host to the country’s first wind farm. SimaPro 7.1 software was used as the modeling platform. Data for this study were collated from various sources, including, manufacturers, the wind turbine farm, and local subcontractors. A software database was used for the modeling process, and the data obtained modeled in accordance with ISO 14040 standards. The findings of this study indicate that the impacts of the transportation and installation phases were moderate, with the largest negative environmental impact deriving from the manufacturing phase. To remedy some of the negative impacts in these phases, green cement was used for the turbine foundation to limit the environmental impacts to be had during the installation phase, while the transportation phase saw the utilization of locally-manufactured turbines. Furthermore, an evaluation of the study’s results revealed that the energy payback period of the wind farm is approximately 0.69 year (8 months), while the payback ratio is 29, and the annual CO2 saving estimated to be at 2.23 × 108 kg, 3.02 × 108 kg, 3.10 × 108 kg for an annual generated power of 371, 501, and 515 GWh/year.

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Section: Introductionmentioning

confidence: 99%

Evaluating the Environmental Impacts and Energy Performance of a Wind Farm System Utilizing the Life-Cycle Assessment Method: A Practical Case Study

et al. 2019

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“…The mixture has been selected due to its favorable environmental properties compared to traditional fluid R134a, and the performances of this cycle were assessed based on the two laws of thermodynamics. Moreover, many research works have been proposed in the same direction [12][13][14][15][16][17][18][19][20]. However, only a few papers have been reported on the utilization of ORCs for heat recovery in CSP plants.…”

Section: Nomenclature γ Colmentioning

confidence: 99%

Off-Design Simulation of a CSP Power Plant Integrated with a Waste Heat Recovery System

E. Boukelia,

Bourouis,

E. Abdesselem

et al. 2023

Energy Engineering

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Concentrating Solar Power (CSP) plants offer a promising way to generate low-emission energy. However, these plants face challenges such as reduced sunlight during winter and cloudy days, despite being located in high solar radiation areas. Furthermore, their dispatch capacities and yields can be affected by high electricity consumption, particularly at night. The present work aims to develop an off-design model that evaluates the hourly and annual performances of a parabolic trough power plant (PTPP) equipped with a waste heat recovery system. The study aims to compare the performances of this new layout with those of the conventional Andasol 1 plant, with the aim of assessing the improvements achieved in the new design. Based on the results, it can be concluded that the new layout has increased the annual generated power to almost 183 GWh (an increase of about 7.60% is achieved compared to the Andasol 1 layout that generates 169 GWh annually). Additionally, the proposed installation has achieved an efficiency of 20.55%, which represents a 7.87% increase compared to the previous design (19.05%). The Levelized Cost of Electricity (LCOE) of the new layout has been reduced by more than 5.8% compared to the Andasol 1 plant. Specifically, it has decreased from 13.11 to 12.35 c/kWh. This reduction in LCOE highlights the improved cost-effectiveness of the new layout, making it a more economically viable option for generating electricity compared to the conventional Andasol 1 plant.

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“…Therefore, the irreversibility in the heat exchanger of the boiler is calculated by equation (22). The energy efficiency of the boiler will be calculated by the equation as follows:…”

Section: Iv4 Energy Exergy and Entropy Analysis In Heat Exchangermentioning

confidence: 99%

“…19.000 of the plant are managed by the private sector while 41.000 are under government controls [1]. However, the number of power plants in Indonesia has not been able to meet all the electricity needs of its people especially the ones in remote areas [1]- [22]. The government should continue to increase the electrification ratio to meet the target of 99% in 2019 [1], [2].…”

Section: Introductionmentioning

confidence: 99%

Performance Investigation of Steam Boiler of PLTU Tello Makassar Using Energy – Exergy and Entropy Balance Approach

Paloboran

Darmawang

Mandra

et al. 2020

IREE

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This work aims to investigate the performance of the boiler of a power plant in Tello Makassar. The boiler has generated an electricity power of 50 MW in order to fulfil the electricity needed by people in Makassar city. Performance investigation of the steam generator is very important due to the operation of the boiler is a long time since 1971. The methodology in this study uses energy and exergy analysis as well as the entropy generation approach. The methodology will be applied in all the boiler components, namely Combustion Chamber, evaporator, superheater IA, superheater IB, superheater II, air heater I, economizer, and air heater II. The result shows a significant decrease in the efficiency of energy and exergy for superheater II of 28.98% and 21.28% respectively. The performance of superheater I and air heater II shows energy efficiency above 90%, while the exergy efficiency is lower than 50% for both components. The economizer has been in the middle performance by placed the efficiency of energy and exergy in 64.48% and 48.35% respectively. In general, boiler components are working very well by the reach an energy efficiency of 90% on average. However, by applications, the exergy analysis of the performances of the components does not reach 50%. The result of the study also shows that the energy and exergy efficiency of the boiler are 41.96% and 29.36% respectively. Meanwhile, the heat inducted to the steam turbine is 35.98 MW and 15.12 MW by energy and exergy analysis when the plant has been working on 10.3 MW of a load.

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Efficiency and Exergy Enhancement of ORC Powered by Recovering Flue Gases-Heat System in Cement Industrials: a Case Study

Cited by 5 publications

References 0 publications

Evaluating the Environmental Impacts and Energy Performance of a Wind Farm System Utilizing the Life-Cycle Assessment Method: A Practical Case Study

Evaluating the Environmental Impacts and Energy Performance of a Wind Farm System Utilizing the Life-Cycle Assessment Method: A Practical Case Study

Off-Design Simulation of a CSP Power Plant Integrated with a Waste Heat Recovery System

Performance Investigation of Steam Boiler of PLTU Tello Makassar Using Energy – Exergy and Entropy Balance Approach

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