The Effect of Ambient Temperature on Components Performance of an In-service Gas Turbine Plant using Exergy Method

Abam, Fidelis I.; Onyejekwe, D. C.; Unachukwu, G. O.

doi:10.3923/sjsres.2011.23.37

Cited by 8 publications

(11 citation statements)

References 10 publications

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“…Exergy is a thermodynamic concept that measures the maximum amount of useful work that can be extracted when a system is brought into equilibrium (thermal, mechanical and chemical) reversibly with the standard environment (T 0 = 298.15 K, P 0 = 1.013 bar) conditions. As a consequence of its great potential for optimization of systems and processes, in the last decades, availability analysis has received increased attention in the literature [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. Figs.…”

Section: Resultsmentioning

confidence: 99%

“…The destruction of availability (exergy) during combustion processes has been examined either for an adiabatic, constant volume system [37] as a function of temperature, pressure, and equivalence ratio for octaneair mixtures or as a function of operating and design parameters for a SI engine [38]. The effect of varying dead state temperatures on exergy efficiency of internal combustion engine was investigated by various investigators [30,[39][40][41]. The exergy cost analysis [36], and sustainability assessment of a diesel engine as well as the exergy potential of the exhaust gas [42] were studied while energetic and exergetic analyses of T56 turboprop engine at various power loading operation modes were done [43].…”

Section: Introductionmentioning

confidence: 99%

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Performance, emissions and exergy analysis of a HCCI engine working with two different research octane number fuels

Morsy

2015

Port-Said Engineering Research Journal

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Homogeneous Charge Compression Ignition (HCCI) is one of the candidates of combustion modes that promise the world an efficient combustion process as compared to the conventional. In this study, the combustion characteristics and exhaust gas emissions rate of a gasoline engine working on HCCI mode are experimentally investigated using a single-cylinder, four strokes, and water cooled research engine. The engine tests are performed with two different research octane number (RON) fuels: gasoline 95 and gasoline 98. The variations of the brake specific fuel consumption (BSFC), the exhaust gas emissions and the exhaust gas temperature with the engine load represented by the indicated mean effective pressure (IMEP) are compared for both fuels. In addition, in-cylinder pressure, heat release rate, energetic and exergetic efficiencies, exhaust exergy rate, heat transfer exergy rate and destruction exergy rate are compared. It was found that BSFC, exhaust gas emissions (except CO) and exhaust gas temperature were lower with gasoline 95. The heat release rates and its peak were obtained to be higher with gasoline 95. No effects on energetic efficiency, exergetic efficiency and exhaust exergy destruction were found. However, exhaust exergy rate and heat transfer exergy rate were found to be affected by fuel octane number.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance, emissions and exergy analysis of a HCCI engine working with two different research octane number fuels

Morsy

2015

Port-Said Engineering Research Journal

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“…In related investigations, Abam and Unachukwu (2009) assessed vehicular emissions in selected areas of Calabar, while Oke and Ukpebor (2013) assessed the spatial and temporal variation in total suspended particulate (TSP) matter in Isoko land. Their findings revealed the total suspended particulates were also higher in the investigated cities when compared with W.H.O standard.…”

Section: Air Quality Of the Study Area Based On Nesrea Limitation Sta...mentioning

confidence: 99%

Contribution of Vehicular Emissions to Climate Change in Nigeria: A Closer Look

Ucheje¹,

Okolo²

2023

IJEPR

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Climate change is fast becoming a global challenge, as most countries in the world have continue to increase their industrial capacities, resulting in increase in greenhouse gas emissions in the atmosphere. Also, the increase in human population in Nigeria has caused increase in motor vehicles, thereby resulting to release of more gaseous pollutants to the atmosphere. This study examined contributions of vehicular emissions to climate change in Port Harcourt, Nigeria. The concentration of air particulate matter and pollutants were monitored in three locations (Rumuokoro, Rumuola and Ada George) selected on the basis of traffic density. Air quality was monitored with MX6 Ibrid Multi gas monitors, MET ONE GT 321 for particulate matter, Davis Vantage Vue Weather Station for metrological parameters. Data on meteorological factors such as air temperature, wind speed, relative humidity were collected from the nearest weather station in Port Harcourt. Traffic records were taken at the designated locations using a close circuit television (Plate 5.1) in the morning, afternoon and evening respectively. All the parameters were monitored in each location, five days in a week every month for two years (2016-2017). The result of the analysis revealed that there was an increase in concentration of average air pollutants across the areas monitored between 2016 and 2017. The variation was attributed to increase in vehicular traffic volume and change in climatic conditions. This implies that emission rate from vehicles will continue to increase and contribute significantly to climate change, except measures are put in place to mitigate it.

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“…Unfortunately, much attention is given to general industrial pollution and pollution in oil industries, with little reference to damage of pollution caused by mobile transportation sources of air pollution. Author [18] added that the increase in portable transportation sources is propelling, thus resulting in high congestion on Nigerian city roads and an increase in the concentration of pollutants in the which may likely offset a portion of the expected reductions. A result from a comparative study of emission figures for two major cities in Niger Delta and Lagos revealed that the concentrations of total suspended particulates, NOx, SO2, and CO in those areas were above the FEPA recommended limit [18].…”

Section: Vehicular Emission Standards In Nigeriamentioning

confidence: 99%

“…Author [18] added that the increase in portable transportation sources is propelling, thus resulting in high congestion on Nigerian city roads and an increase in the concentration of pollutants in the which may likely offset a portion of the expected reductions. A result from a comparative study of emission figures for two major cities in Niger Delta and Lagos revealed that the concentrations of total suspended particulates, NOx, SO2, and CO in those areas were above the FEPA recommended limit [18]. This has drawn the attention of researchers, policymakers and stakeholders to contribute significantly to air quality in Nigeria.…”

Section: Vehicular Emission Standards In Nigeriamentioning

confidence: 99%

State of the Art on Vehicular Engine Exhaust Emissions Standards and Regulations: a Review

Usman,

Mohammed,

Dawaki

2023

PoS

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Burning fossil fuels introduced massive quantities of pollutants, leading to many adverse effects on human health. Therefore, regulations to reduce or eliminate exhaust gases and pollutants emissions from fossil fuels began to be issued worldwide in 1970. Automotive emissions issue has been strictly regulated since 1980. Therefore, this article reviewed some significant countries' vehicular emission standards for diesel and gasoline engines. The review began with an overview of considerable diesel and gasoline exhaust emissions, how they are generated, and their impact on the environment and human health, then surveyed the emission standards and regulations for motor vehicles in the United States

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The Effect of Ambient Temperature on Components Performance of an In-service Gas Turbine Plant using Exergy Method

Cited by 8 publications

References 10 publications

Performance, emissions and exergy analysis of a HCCI engine working with two different research octane number fuels

Performance, emissions and exergy analysis of a HCCI engine working with two different research octane number fuels

Contribution of Vehicular Emissions to Climate Change in Nigeria: A Closer Look

State of the Art on Vehicular Engine Exhaust Emissions Standards and Regulations: a Review

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