Combined Energy-Exergy-Control (CEEC) analysis and multi-objective optimization of parabolic trough solar collector powered steam power plant

Babaelahi, Mojtaba; Mofidipour, Ehsan; Rafat, Ehsan

doi:10.1016/j.energy.2020.117641

Cited by 23 publications

(6 citation statements)

References 25 publications

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“…However, there are several reasons why policy-makers' incentives might be aligned with those supporting conservation and gas EE. (1) Reducing transportation costs at the peak of consumption. (2) Not reduction in demand for gas (natural gas is a non-replaceable product, and consumers can not consider a more economical alternative to gas, so demand for gas will not decrease).…”

Section: Scenario 2: Gas Prices Rise In the Industrial Sectormentioning

confidence: 99%

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Efficacy of energy consumption policy in Iranian National Gas Company: System dynamics approach

Alikhani

Vahdat

Owlia

2021

Energy & Environment

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The ever-increasing global demand for energy, oil production/supply and the necessity for alternative approaches regarding energy harvesting have opened a deeper horizon for natural gas utilization. The complexity of the demand–supply match of natural gas and the lack of an optimal pattern of energy consumption have been daunting tasks for the energy decision-makers in the last century. Although laws regarding energy efficiency are formulated and even implemented in some cases, there was no benchmarking analysis which takes all useful indexes into account until recently. However, in this article, by identifying the factors affecting the pattern of gas consumption through the system dynamic approach, regulations associated with productivity are assessed. For this, a regional dynamic integrated gas model is developed. The model effectiveness in handling the system dynamism and various scenarios are investigated through a real case study in Yazd—a central province of Iran—to ascertain the proposed approach. The results show that the developed targeted subsidy law is effective in the household sector. Despite the fact that the thorough implementation of the energy efficiency regulations has positive environmental and economic impacts, these regulations have not been fully implemented in many cases and do not have the required efficiency in the industry sector.

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Section: Scenario 2: Gas Prices Rise In the Industrial Sectormentioning

confidence: 99%

“…Energy is one of the indispensable parts of the economic development of Iran. 1 A high proportion of the government budget is gathered from the oil and gas exports which is about more than 90% of foreign currency earnings in 2011. After Russia, Iran has the most proven reserves of natural gas in the world.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of energy consumption policy in Iranian National Gas Company: System dynamics approach

Alikhani

Vahdat

Owlia

2021

Energy & Environment

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“…The schematic of a solar-powered thermal power plant is illustrated in Figure 1 [26]. The plant size is about 100 MW.…”

Section: Parabolic Trough Solar Power Plantmentioning

confidence: 99%

Thermodynamic Analysis, Advanced Non-Linear Dynamic Simulation and Multi-Criteria Optimization of a 100 MW Parabolic Trough Solar Steam Power Plant

Mofidipour

Babaelahi

Arabkoohsar

2021

International Journal of Thermodynamics

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Thermodynamic analyses of concentrating solar power plants and optimizing these cycles relying on the energetic and exergetic optimal efficiencies are quite common. However, it is found that just considering the efficiency of the system for performance optimization and neglecting the adverse effects of the plant's wrong operation timings, which is a function of the solar working fluid flow rate, can easily give misleading optimization results. This study's primary goal is to find the optimal operating point of the cycle in terms of the thermodynamic efficiencies considering the system's operating time. Thus, the Sliding Mode Control (SMC) approach is employed to provide a proper mass flow rate for the working fluid from the solar collector field to achieve a precise output temperature from the collectors in different operating conditions. Multi-objective optimization is performed using the Particle Swarm Optimization (PSO) algorithm. The results of power block sensitivity analysis indicate that a 70℃ increase in the solar collector outlet temperature remarkably enhances electricity generation and exergetic efficiency by 67 and 48%. The two-objective optimization shows 22.01%, 2.10%, and 5.46% enhancement in response time, thermal efficiency, and exergetic efficiency, and the three-objective optimization reveals 3.68% and 3.74% improvement in efficiency (thermal and exergetic), respectively.

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“…Peng et al 19 studied exergy destruction of a typical solar hybrid coal ‐fired power plant using the energy utilization diagram methodologyand showed that exergy destruction in ISCC is lower than in solar thermal plant. Babaelahi et al 20 tried to optimize energy and exergy efficiencies in several SRC configurations to propose the optimum among them. According to the literature, most of the ISCC power plants are those using PTC technology.…”

Section: Introductionmentioning

confidence: 99%

Energy, exergy, and economic analysis of an integrated solar combined cycle power plant

Benabdellah

Ghenaiet

2021

Engineering Reports

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Integrated Solar Combined Cycle (ISCC) power plants based on Parabolic Trough Concentrators (PTCs) are the most efficient way for solar into electrical energy conversion. However, due to operation in several climate conditions, they need more efforts in their adaptation. This paper presents a techno‐economic assessment of an ISCC ‐ PTC system operating at Hassi R'mel site (Algerian Sahara) for which a new thermal storage system is incorporated. The obtained results reveal noticeable enhancements in the solar energy conversion and the overall power plant performance, hence offering better stability to the grid. As shown, the net solar thermal energy conversion ratio may reach up to 14%. Energy and exergy efficiencies are respectively equal to 56.06% and 53.29%, and about 46% of exergy received by the system is destructed. Moreover, the obtained Levelized Cost of Energy (LCOE) is around 9.75 ¢/kWh which is very promising, but still higher compared with a simple Combined Cycle (CC). At this geographical site, the modified ISCC ‐ PTC power plant will allow saving about 30 million $ in natural gas consumption and 13 million $ in emission taxes.

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Combined Energy-Exergy-Control (CEEC) analysis and multi-objective optimization of parabolic trough solar collector powered steam power plant

Cited by 23 publications

References 25 publications

Efficacy of energy consumption policy in Iranian National Gas Company: System dynamics approach

Efficacy of energy consumption policy in Iranian National Gas Company: System dynamics approach

Thermodynamic Analysis, Advanced Non-Linear Dynamic Simulation and Multi-Criteria Optimization of a 100 MW Parabolic Trough Solar Steam Power Plant

Energy, exergy, and economic analysis of an integrated solar combined cycle power plant

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