Performance analysis on various system layouts for the combination of an ambient pressure molten carbonate fuel cell and a gas turbine

Oh, K.S.; Kim, Tong Seop

doi:10.1016/j.jpowsour.2005.09.032

Cited by 26 publications

(11 citation statements)

References 9 publications

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“…Gas turbines are widely used for power generation. Obviously, GTs are strongly sensitive to the influence of the ambient conditions, which vary considerably in countries with a wide range of climatic conditions, and the thermal efficiency of these machines is thus affected [24][25][26][27]. For example, Ameri and Ahmadi [24] studied the effect of ambient temperature on the exergy losses of a heat recovery steam generator (SG).…”

Section: Effect Of Ambient Conditions On Power Plant Performancementioning

confidence: 99%

Effects of ambient conditions on the thermodynamic performance of hybrid nuclear-combined cycle power plant

Alsairafi

2011

Int. J. Energy Res.

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SUMMARY This paper provides a theoretical study of the effects of ambient conditions on the thermodynamic performance of a hybrid combined‐nuclear cycle power plant. The operational parameters investigated are based on the first and second laws of thermodynamics, which include the ambient air temperature and ambient relative humidity (Φ). The results obtained for the gas turbine model are shown to agree very well with operational data from the Al‐Zour Emergency power plant in Kuwait. The ambient temperature was studied within the range of 0–55 °C. The analysis shows that the ambient air temperature has strong effects on plant performance and that operating the system at a high temperature will degrade the performance. Power output is reduced when the temperature is above the standard ambient temperature of 15 °C, and this loss rate is about 17% at 55 °C. The effect of ambient relative humidity (Φ) becomes significant only at higher temperatures. The ambient temperature has a large effect on the exergy destruction of the heat recovery steam generator exhaust, but it has little effect on other components of the plant. The analysis also indicates that reducing the temperature from 55 to 15 °C could help decrease the total exergy destruction of the plant by only 2%. Copyright © 2011 John Wiley & Sons, Ltd.

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Section: Effect Of Ambient Conditions On Power Plant Performancementioning

confidence: 99%

Effects of ambient conditions on the thermodynamic performance of hybrid nuclear-combined cycle power plant

Alsairafi

2011

Int. J. Energy Res.

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“…In high temperature fuel cells such as solid oxide fuel cells and molten carbonate fuel cells, such integrated systems are usually called hybrid systems and have been studied extensively. High temperature fuel cell hybridization is expected to provide efficiency improvements for a wide range of designs [12,14]. However, with PEMFCs, a more careful integration is required because the operating temperature is much lower than those of high temperature fuel cells.…”

Section: Integration With Turbomachinerymentioning

confidence: 99%

“…9 shows the variations in the fraction of the fuel supplied to the combustor (FR in Eq. (14)) and the portion of gas turbine power output (WR in Eq. (17)) with pressure ratio and turbine inlet temperature in case of configuration A-I.…”

Section: Integrated Pemfc Systemsmentioning

confidence: 99%

“…In addition to CHP applications, the integration of fuel cells with other heat engines, especially turbomachines such as the gas turbines, is another way to improve fuel economy [10]. Such integrations have been actively researched in high temperature fuel cells such as solid oxide fuel cells [11,12] and molten carbonate fuel cells [13,14]. Recently, combinations of PEMFCs and turbomachinery have also been tried.…”

Section: Introductionmentioning

confidence: 99%

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Influence of thermal management and integration with turbomachinery on the performance of polymer electrolyte membrane fuel cell systems

Ryu

Park

et al. 2011

J Mech Sci Technol

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Polymer electrolyte membrane fuel cells (PEMFCs) have many good characteristics for small power sources such as low operating temperature and high power density. In this study, the effects of thermal management on the performance of PEMFC systems using natural gas fuel, and the effects of integrating PEMFC systems with turbomachines, were investigated. Firstly, performance of various system configurations differing in the thermal management of reforming and stack cooling processes was comparatively analyzed. Then, various integrated system combinations with turbomachines (compressors and turbines) were analyzed. We performed a parametric analysis of the influence of turbine inlet temperature and compressor pressure ratio on system performance, and a 10% difference in efficiency among four simple PEMFC systems was predicted. Pressurization of the PEMFC with adequate thermal management may improve system efficiency, while efficiency enhancement from corresponding simple PEMFC systems was hard to achieve in the ambient pressure integrated systems.

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“…Therefore, hybrid systems such as high temperature fuel cells coupled to gas turbine systems have been considered in the previous works [2e4]. Furthermore, since a MCFC operates at temperature range of 600e700 C, which matches well with the operating temperature range of a SeCO 2 Brayton cycle, the SeCO 2 Brayton cycle was applied to MCFCs as a bottoming cycle to improve the total system performance previously [5,6] in addition to the gas turbine coupling study.…”

Section: Introductionmentioning

confidence: 99%

Various supercritical carbon dioxide cycle layouts study for molten carbonate fuel cell application

Bae

Ahn

Lee

et al. 2014

Journal of Power Sources

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Performance analysis on various system layouts for the combination of an ambient pressure molten carbonate fuel cell and a gas turbine

Cited by 26 publications

References 9 publications

Effects of ambient conditions on the thermodynamic performance of hybrid nuclear-combined cycle power plant

Effects of ambient conditions on the thermodynamic performance of hybrid nuclear-combined cycle power plant

Influence of thermal management and integration with turbomachinery on the performance of polymer electrolyte membrane fuel cell systems

Various supercritical carbon dioxide cycle layouts study for molten carbonate fuel cell application

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