scholarly journals 4E Analyses of a Hybrid Waste-Driven CHP–ORC Plant with Flue Gas Condensation

2020 ◽  
Vol 12 (22) ◽  
pp. 9449
Author(s):  
Hossein Nami ◽  
Amjad Anvari-Moghaddam ◽  
Ahmad Arabkoohsar ◽  
Amir Reza Razmi
Keyword(s):  
Power Plant ◽  
Environmental Effects ◽  
Flue Gas ◽  
Organic Rankine Cycle ◽  
Energy Systems ◽  
Rankine Cycle ◽  
Hybrid Plant ◽  
Gas Condensation ◽  
The Cost ◽  
Exergy Losses

The combination of a waste-driven hybrid heat and power plant with a small organic Rankine cycle unit was recently proposed and investigated from a thermodynamic perspective. The present study provides a more comprehensive assessment from system operation through considering the energy, exergy, exergoeconomic, and exergoenvironmental (4E) aspects in a revised design of this concept to obtain a bigger picture of the system’s technical, economic, and environmental effects on existing and future energy systems. The revised design includes a flue gas condensation unit and alternative friendly organic working fluids. For this, the hybrid plant is modeled for its thermal, economic, and environmental performances. Then, the exergy losses and environmental effects of the system are scrutinized, the cost of losses and pollutions are predicted, and lastly, sorts of solutions are introduced to improve the exergoeconomic and exergoenvironmental performances of the system. The results indicate that the highest share of exergy destruction relates to the incineration (equipped with a steam generator) with a levelized cost of approximately USD 71/h for a power plant with almost 3.3 megawatt electricity output capacity. The hybridization proposal with the flue gas condensation unit increases the sustainability index of the system from 1.264 to 1.28.

Techno-Economic Evaluation of a Concentrating Solar Power Plant Driven by an Organic Rankine Cycle

2020 ◽  
Vol 142 (6) ◽  
Author(s):  
Fayrouz El hamdani ◽  
Sébastien Vaudreuil ◽  
Souad Abderafi ◽  
Tijani Bounahmidi
Keyword(s):  
Economic Evaluation ◽  
Power Plant ◽  
Solar Power ◽  
Forward Osmosis ◽  
Organic Rankine Cycle ◽  
Thermodynamic Cycle ◽  
Rankine Cycle ◽  
Green Energy ◽  
Concentrating Solar Power ◽  
The Cost

Abstract Concentrating solar power (CSP) technology is one of the promising options to generate green energy. However, the cost of kWhe produced is relatively high compared with fossil resources and can be reduced by integrating a cogeneration system exploiting waste energy. In this study, a technico-economic evaluation of a 1 MWe CSP plant with a condensation heat (85 °C) is investigated. The temperature constraint is set to meet the thermal separation needs of the draw solution of a forward osmosis desalination process. The purpose of this study focuses on the factors involved in reducing the cost per kWhe, which are the selection of the organic fluid used in the organic Rankine cycle and the appropriate choice of the solar multiple (SM) according to the appropriate storage hours (SH) maximizing the CSP thermal efficiency. The performance of different organic fluids was compared, based on the calculation of the thermodynamic cycle efficiency. The cyclopentane was retained for its reduced cost. Operating with this fluid, a sensitivity analysis was realized to test the effect of the solar multiple and storage hours on the power plant. It allows us to conclude that different appropriate combination between storage hours and solar multiple can be chosen, for the needs of our project, we opt for 8 h and 1.85, respectively. Thus, in this case, the cost of kWh was found to be 23.95¢.

scholarly journals Perancangan Siklus Rankine Organik Untuk Pemanfaatan Gas Buang Pada PLTU di Indonesia

2017 ◽  
Vol 1 (2) ◽  
Author(s):  
Mohammad Azis M
Keyword(s):  
Power Plant ◽  
Flue Gas ◽  
Alternative Energy ◽  
Waste Heat ◽  
Human Life ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Working Fluid ◽  
Coal Power Plant ◽  
Coal Power

ABSTRAKEnergi merupakan kebutuhan pada kehidupan manusia. Sumber energi fossil yang digunakan untuk memenuhi kebutuhan energi semakin lama semakin menipis. Sehingga diperlukan sumber energi alternatif atau peningkatan efisiensi dalam pemanfaatan energi. Panas buang merupakan salah satu sumber energi alternatif. Pemanfaatan panas buang salah satunya adalah dengan menggunakan siklus rankine organik. PLTU memiliki panas buang yang berpotensi untuk dimanfaatkan. Temperatur gas buang pada PLTU yang rata-rata sebesar 150 oC. Proses perancangan dilakukan untuk memanfaatkan panas buang hasil pembakaran. Hasil perancangan sistem siklus rankine organik mampu menghasilkan daya sebesar 6053 kW (R142b), 5705 kW (R123), dan 5502 (Isopentane) serta efisiensi sebesar 18.54%, 18.51%, dan 17.85% untuk fluida kerja R142b, R123, dan Isopentane.Kata kunci: siklus rankine organik, gas buang, panas sisa ABSTRACTEnergy is needeed for human life. Fossil energy which used to fulfill our needs is diminished. So, alternative energy source is used. Waste heat are one of a kind energy alternative source. Organic rankine cycle can be used to utilitze waste heat. Coal power plant which have flue gas to utilized. Average flue gas temperature in coal power plant are 150 oC. Design process to utilize waste heat has been conducted. The power produced in the system are 6053 kW, 5705 kW, and 5502 kWalso the efficiency are 18.54%, 18,51%, and 17,85% for working fluid R142b, R123, and Isopentane respectively.Keyword: organic rankine cycle, waste heat, flue gas 

Assessment of the Performance and of the Profitability of CHP Energy Systems Fed by Vegetable Oils

2009 ◽  
Author(s):  
R. Bettocchi ◽  
M. Cadorin ◽  
M. Morini ◽  
M. Pinelli ◽  
P. R. Spina ◽  
...  
Keyword(s):  
Internal Combustion Engines ◽  
Organic Rankine Cycle ◽  
Energy Systems ◽  
Rankine Cycle ◽  
Internal Combustion ◽  
Primary Energy ◽  
Combined Cycle ◽  
Combustion Engines ◽  
Economic Analyses ◽  
The Cost

In this paper, energy and economic analyses of vegetable oil fed energy systems are presented. The paper focuses on the process from oil to energy, while the economic costs of the transformation process of the biomass from field to oil is assumed embodied in the cost of the oils. Five different oils are considered (sunflower, rapeseed, soybean, palm and waste fried oil) as fuels for cogenerative Internal Combustion Engines, also running in combined cycle configuration. In particular, the considered combined cycle is composed of Internal Combustion Engines and Organic Rankine Cycle modules. Energy analyses allow the evaluation of the installed power, of the produced energies, and of the primary energy saving index for different yearly oil mass values. The results of the economic analyses as a function of yearly oil mass are also presented. The cost sources are highlighted in order to point out the major contributors. Moreover, analyses of the limit value of incentive and oil price, in order to guarantee plant profitability, are carried out.

scholarly journals Experimental Study of a Lab-Scale Organic Rankine Cycle System for Heat and Water Recovery from Flue Gas in Thermal Power Plants

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4328
Author(s):  
Young-Min Kim ◽  
Assmelash Negash ◽  
Syed Safeer Mehdi Shamsi ◽  
Dong-Gil Shin ◽  
Gyubaek Cho
Keyword(s):  
Power Plant ◽  
Flue Gas ◽  
Power Plants ◽  
Thermal Power ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Working Fluid ◽  
Water Recovery ◽  
Cycle System ◽  
Fossil Fuel Power Plants

Fossil fuel power plants can cause numerous environmental issues, owing to exhaust emissions and substantial water consumption. In a thermal power plant, heat and water recovery from flue gas can reduce CO2 emissions and water demand. High-humidity flue gas averts the diffusion of pollutants, enhances the secondary transformation of air pollutants, and leads to smog weather; hence, water recovery from flue gas can also help to lessen the incidence of white plumes and smog near and around the power plant. In this study, a lab-scale system for heat and water recovery from flue gas was tested. The flue gas was initially cooled by an organic Rankine cycle (ORC) system to produce power. This gas was further cooled by an aftercooler, using the same working fluid to condense the water and condensable particulate matter in the flue gas. The ORC system can produce approximately 220 W of additional power from flue gas at 140 °C, with a thermal efficiency of 10%. By cooling the flue gas below 30–40 °C, the aftercooler can recover 60% of the water in it.

Technical and economical analysis of a solar–geothermal hybrid plant based on an Organic Rankine Cycle

Geothermics ◽  
2011 ◽  
Vol 40 (1) ◽  
pp. 58-68 ◽  
Author(s):  
Marco Astolfi ◽  
Luca Xodo ◽  
Matteo C. Romano ◽  
Ennio Macchi
Keyword(s):  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Hybrid Plant ◽  
Economical Analysis

Hybrid Solar-Geothermal Power Generation to Increase the Energy Production From a Binary Geothermal Plant

2011 ◽  
Author(s):  
Giovanni Manente ◽  
Randall Field ◽  
Ronald DiPippo ◽  
Jefferson W. Tester ◽  
Marco Paci ◽  
...  
Keyword(s):  
Power Plant ◽  
Power Output ◽  
Energy Production ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Working Fluid ◽  
Solar Thermal Energy ◽  
Geothermal Fluid ◽  
Industrial Grade ◽  
Design Values

This article examines how hybridization using solar thermal energy can increase the power output of a geothermal binary power plant that is operating on geothermal fluid conditions that fall short of design values in temperature and flow rate. The power cycle consists of a subcritical organic Rankine cycle using industrial grade isobutane as the working fluid. Each of the power plant units includes two expanders, a vaporizer, a preheater and air-cooled condensers. Aspen Plus was used to model the plant; the model was validated and adjusted by comparing its predictions to data collected during the first year of operation. The model was then run to determine the best strategy for distributing the available geothermal fluid between the two units to optimize the plant for the existing degraded geofluid conditions. Two solar-geothermal hybrid designs were evaluated to assess their ability to increase the power output and the annual energy production relative to the geothermal-only case.

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