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Sustainability 2015, 7(2), 1292-1307; doi:10.3390/su7021292

Thermodynamic Analysis of a Power Plant Integrated with Fogging Inlet Cooling and a Biomass Gasification

1
Department of Mechanical Engineering, University of Ataturk, Erzurum 25240, Turkey
2
Faculty of Mechanical Engineering, University of Tabriz, Tabriz 51666-16471, Iran
3
Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1H 7K4, Canada
4
Institute for Energy Engineering, Technische Universität Berlin, Marchstr 18, 10587 Berlin, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Francesco Asdrubali
Received: 3 December 2014 / Revised: 24 December 2014 / Accepted: 19 January 2015 / Published: 27 January 2015
(This article belongs to the Section Energy Sustainability)
View Full-Text   |   Download PDF [1411 KB, uploaded 24 February 2015]   |  

Abstract

Biomass energy and especially biofuels produced by biomass gasification are clean and renewable options for power plants. Also, on hot days the performance of gas turbines decreases substantially, a problem that can be mitigated by fog cooling. In the present paper, a biomass-integrated fogging steam injected gas turbine cycle is analyzed with energy and exergy methods. It is observed that (1) increasing the compressor pressure ratio raises the air flow rate in the plant but reduces the biomass flow rate; (2) increasing the gas turbine inlet temperature decreases the air and biomass flow rates; (3) increasing the compressor pressure ratio raises the energy and exergy efficiencies, especially at lower pressure ratios; (4) increasing the gas turbine inlet temperature raises both efficiencies; and (5) overspray increases the energy efficiency and net cycle power slightly. The gas turbine exhibits the highest exergy efficiency of the cycle components and the combustor the lowest. A comparison of the cycle with similar cycles fired by natural gas and differently configured cycles fueled by biomass shows that the cycle with natural gas firing has an energy efficiency 18 percentage points above the biomass fired cycle, and that steam injection increases the energy efficiency about five percentage points relative to the cycle without steam injection. Also, the influence of steam injection on energy efficiency is more significant than fog cooling. View Full-Text
Keywords: biomass; energy; exergy; steam injection; fog cooler; gas turbine biomass; energy; exergy; steam injection; fog cooler; gas turbine
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Athari, H.; Soltani, S.; Rosen, M.A.; Mahmoudi, S.M.S.; Morosuk, T. Thermodynamic Analysis of a Power Plant Integrated with Fogging Inlet Cooling and a Biomass Gasification. Sustainability 2015, 7, 1292-1307.

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