Performance study of a partial gasification pressurized combustion topping gas cycle and split rankine combined cycle: Part II?Exergy analysis

De, S. K.; Roy, Dibyendu; Sarkar, Atreyee

doi:10.1002/er.895

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…Sometimes the exergy loss and exergy destruction inside furnace chamber is taken as combination, ie. Alos s + Icv = A inpUI -A lI3nsfer = A inpul -(Mmelld + Aoue gJ (equation 2 and 3, S. De, 2003). The reason why exergy loss and destruction are merged to one part is unnecessary to do so or because sometimes A lass and lev are not computable due to short of monitoring data.…”

Section: Exergy Balance Equation Ismentioning

confidence: 99%

Exergy analysis and efficiency evaluation for an aluminium melting furnace in a die casting plant

Lee¹

2021

Preprint

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An aluminium melting furnace efficiency in a die casting plant was investigated using energy and exergy methods. Energy efficiency and exergy efficiency values were evaluated for the natural gas-fired furnace, and the efficiency improvement was analyzed before and after two new regenerative burners were installed on the furnace. The research analyzed and compared the environmental impacts attributable to the melting furnace before and after the burner upgrading project, and also provided a financial analysis of the capital investment of the upgrading project. The study shows that the exergy method can be used beneficially to analyze the furnace efficiency and that exergy efficiency is a more practical measure in reality. Thus, it is believed that further applications of exergy methods are desirable to a wider range of industrial and engineering applications. From the results of comparisons, the study shows that the regenerative burner technology and stage-combustion technique can improve combustion performance, reduce fuel (natural gas) consumption and lower NOx and Co2 emissions. Adopting the regenerative burner and stage-combustion technique will be beneficial to the die casting plant on energy saving and cost reduction. Recommendations are also made for further efficiency improvements.

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Section: Exergy Balance Equation Ismentioning

confidence: 99%

Exergy analysis and efficiency evaluation for an aluminium melting furnace in a die casting plant

Lee¹

2021

Preprint

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Parametric analysis of a coal based combined cycle power plant

Srinivas¹,

Gupta

Reddy

et al. 2005

Int. J. Energy Res.

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SUMMARYIn the present paper thermodynamic analyses, i.e. both energy and exergy analyses have been conducted for a coal based combined cycle power plant, which consists of pressurized circulating fluidized bed (PCFB) partial gasification unit and an atmospheric circulating fluidized bed (ACFB) char combustion unit. Dual pressure steam cycle is considered for the bottoming cycle to reduce irreversibilities during heat transfer from gas to water/steam. The effect of operating variables such as pressure ratio, gas turbine inlet temperature on the performance of combined cycle power plant has been investigated. The pressure ratio and maximum temperature (gas turbine inlet temperature) are identified as the dominant parameters having impact on the combined cycle plant performance. The work output of the topping cycle is found to increase with pressure ratio, while for the bottoming cycle it decreases. However, for the same gas turbine inlet temperature the overall work output of the combined cycle plant increases up to a certain pressure ratio, and thereafter not much increase is observed. The entropy generation, the irreversibilities in each component of the combined cycle and the exergy destruction/losses are also estimated.

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Performance improvement of a coal gasification and combined cogeneration plant by multi-pressure steam generation

Biswal

2004

Applied Thermal Engineering

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Performance study of a partial gasification pressurized combustion topping gas cycle and split rankine combined cycle: Part II?Exergy analysis

Cited by 5 publications

References 15 publications

Exergy analysis and efficiency evaluation for an aluminium melting furnace in a die casting plant

Exergy analysis and efficiency evaluation for an aluminium melting furnace in a die casting plant

Parametric analysis of a coal based combined cycle power plant

Performance improvement of a coal gasification and combined cogeneration plant by multi-pressure steam generation

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