Energy, exergy and economics analysis of an ORC working with several fluids and utilizes smelting furnace gases as heat source

Mirzaei, Mojtaba; Ahmadi, Mohammad Hossein; Mobin, Mohammad; Nazari, Mohammad Alhuyi; Alayi, Reza

doi:10.1016/j.tsep.2017.11.011

Cited by 70 publications

(17 citation statements)

References 35 publications

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“…Exergy concept is an appropriate tool to evaluate the performance of energy systems, since it is able to assess the plants based on second law of thermodynamics . By using exergy analysis, it is possible to find exergy destruction in various components of a cycle . Patel et al analyzed lithium‐chloride absorption chiller based on exergy.…”

Section: Introductionmentioning

confidence: 99%

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Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

Javadi

Ahmadi

Khalaji

2019

Env Prog and Sustain Energy

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Due to the necessity of achieving the energy systems with improved efficiency, combined power plants are developing in recent decades. Moreover, employing renewable energy sources in the power generation and heating/cooling purposes is an attractive idea to obtain more environmentally benign energy systems. In the current study, a combined cooling and power (CCP) plant is analyzed based on exergy and economic concepts. Afterward, by adding lithium‐bromide refrigeration cycle and parabolic solar collectors, the plant is investigated. The exergy efficiency, carbon dioxide emission, and cost of generated electricity are evaluated on the basis of SPECO model. The results of the study show that thermal and exergy efficiencies of the CCP plant with the solar collector depend on various parameters and can be affected significantly. The efficiency of the plant after applying lithium‐bromide refrigeration cycle and the solar collector increased from 50.33 to 51.73%, while the exergy efficiency enhanced from 47.48 to 48.22%. In addition, it was concluded that adding the collector and absorption chiller leads to 1.5% reduction in environmental pollutants.

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Section: Introductionmentioning

confidence: 99%

“…10,11 By using exergy analysis, it is possible to find exergy destruction in various components of a cycle. 12 Patel et al 13 analyzed lithium-chloride absorption chiller based on exergy. According to their results, the highest destructions of exergy were in generator and absorber of the cycle.…”

mentioning

confidence: 99%

Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

Javadi

Ahmadi

Khalaji

2019

Env Prog and Sustain Energy

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“…Electricity needs careful attention with regard to its contribution to global greenhouse gas (GHG) emissions. Energy integration is used to reduce the required energy for any process (power saving) and minimize environmental impact; examples include reheat and regenerative heaters in combined cycle power plants, heat recovery in organic Rankine cycle, and thermocoupling and heat pumping in distillation systems …”

Section: Introductionmentioning

confidence: 99%

Exergy analysis of large and impounded hydropower plants: Case study El Roseires Dam (280 MW)

Abuelnuor

Ahmed

Saqr

et al. 2019

Env Prog and Sustain Energy

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Nowadays, one of the major and serious worldly concerns is the limitation of energy resources. Sudan, in specific, confronts a critical crisis in fossil fuel resources due to its separation science 2011, and mostly concerning the production of electricity energy. There are many sources of renewable energies in Sudan such as hydropower.Which it is widely used in Sudan, and one example is Elroseires hydropower plant.This research aims to conduct an exergy analysis of the performance of the Elroseires hydropower plant to identify areas for improvement using actual operation data. The exergy efficiency and exergy destruction rate of each unit in the plant were determined independently. The thermodynamic inefficiencies of all units of the plant were quantified for analysis to identify breakthrough points for further energy savings.Results indicated that the lowest exergy destruction rate occurs in August (20.6 MW) despite the lowest production of energy during this period. This outcome is due to the volumetric flow rate being less than those in other months, thereby leading to minimal flow turbulence that result in low exergy destruction. By contrast, the greatest exergy destruction occurs in December (106.1 MW) because of the high volumetric flow rate for the same pipe diameter. Such condition leads to turbulent flow and results in considerable exergy destruction. This study emphasizes that exergy analysis is useful in determining irreversibilities and losses in Elroseires hydropower plant to improve its thermodynamic performance. K E Y W O R D S electricity, exergy, hydropower plant, renewable energy 1 | INTRODUCTION The demand for energy has increased drastically since the middle of the last century due to industrial development and population growth.Consequently, many countries have started searching for and developing new and renewable sources of energy. Electricity is considered as the most multipurpose energy carrier in our modern global economy because it is primarily associated with human and economic development. Electricity, as a source of energy, is increasingly growing relative to other sources of energy. This trend is expected to increase for decades as large parts of the world population, especially those in developing countries, become connected to power grids. Electricity needs careful attention with regard to its contribution to global greenhouse gas (GHG) emissions. Energy integration is used to reduce the required energy for any process (power saving) and minimize environmental impact; examples include reheat and regenerative heaters in combined cycle power plants, heat recovery in organic Rankine cycle, and thermocoupling and heat pumping in distillation systems. [1][2][3][4][5][6][7][8][9][10][11]

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“…Using the efficient, innovative, and cost‐effective renewable energy systems to produce drinking water is the target of several scientists and researches . Organic Rankine Cycle (ORC) system is one of the efficient technologies in remote areas that are out of reach for power generation . ORC is similar to Rankine cycle, while the working fluid is an organic compound.…”

Section: Introductionmentioning

confidence: 99%

“…32,33 Organic Rankine Cycle (ORC) system is one of the efficient technologies in remote areas that are out of reach for power generation. [34][35][36] ORC is similar to Rankine cycle, while the working fluid is an organic compound. ORC energy needs can be provided by a small cycle of photovoltaic (PV).…”

Section: Introductionmentioning

confidence: 99%

Multiobjective optimization design of the solar field and reverse osmosis system with preheating feed water using Genetic algorithm

Ghoujdi

Hadiannasab

Bidi

et al. 2018

Energy Science & Engineering

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In this article the solar energy is utilized to generate needed steam for a power generation cycle which in turn provides the required power of a RO system. Optimization was carried out on two levels. First, Economizer, Evaporator, Super heater in power generation cycle as well as the type of membrane, PV numbers and series were optimized. In addition, the optimum design of a solar field for the system was carried out and the collector specifications, number of branches, and flow rate were designed. Based on the first level, optimization was designed to reduce costs and increase the permeate water production and reduction in costs and pressure drop of the solar filed. Preheating of the RO feed water had different effects on the production of fresh water at various concentrations. For feed water with constant flow rate and concentration of 45 000 ppm, the maximum rate of permeate flow was obtained at 26°C, while for concentration of 35 000 ppm, the maximum permeate flow rate was achieved at 33°C. By using 5 parallel elements SW30XLE‐400 for RO system, in the optimized condition, permeate flow rate and recovery were 9494.19 (m3/day) and 59.5%, respectively. In this condition, the unit production cost of water was 0.6046 ($/m3).

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Energy, exergy and economics analysis of an ORC working with several fluids and utilizes smelting furnace gases as heat source

Cited by 70 publications

References 35 publications

Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

Exergetic, economic, and environmental analyses of combined cooling and power plants with parabolic solar collector

Exergy analysis of large and impounded hydropower plants: Case study El Roseires Dam (280 MW)

Multiobjective optimization design of the solar field and reverse osmosis system with preheating feed water using Genetic algorithm

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