Energy, exergy and economic analysis of industrial boilers

In this paper, the useful concept of energy and exergy utilization is analyzed, and applied to the boiler system. Energy and exergy flows in a boiler have been shown in this paper. The energy and exergy efficiencies have been determined as well. In a boiler, the energy and exergy efficiencies are found to be 72.46% and 24.89%, respectively. A boiler energy and exergy efficiencies are compared with others work as well. It has been found that the combustion chamber is the major contributor for exergy destruction followed by heat exchanger of a boiler system. Furthermore, several energy saving measures such as use of variable speed drive in boiler's fan energy savings and heat recovery from flue gas are applied in reducing a boiler energy use. It has been found that the payback period is about 1Â yr for heat recovery from a boiler flue gas. The payback period for using VSD with 19Â kW motor found to be economically viable for energy savings in a boiler fan.

[1]  Arif Hepbasli,et al.  Turkey's sectoral energy and exergy analysis between 1999 and 2000 , 2004 .

[2]  A. Hepbasli,et al.  AN EXERGY ANALYSIS IN A MIXED FEED INDUSTRY : EVALUATION OF AN EXTRUDER PELLET LINE , 2002 .

[3]  Ibrahim Dincer,et al.  Exergy: Energy, Environment and Sustainable Development , 2007 .

[4]  P. J. Petit,et al.  Use the second law, first , 1977 .

[5]  R Rivero,et al.  Exergy analysis of industrial process - Energy - Economy - Ecology , 2001 .

[6]  Luis Augusto Barbosa Cortez,et al.  A METHOD FOR EXERGY ANALYSIS OF SUGARCANE BAGASSE BOILERS , 1998 .

[7]  Edward S. Rubin,et al.  A centurial history of technological change and learning curves for pulverized coal-fired utility boilers , 2007 .

[8]  A. Al-Ghandoor,et al.  Assessment of Energy and Exergy Efficiencies of Power Generation Sub-Sector in Jordan , 2009 .

[9]  Xi Ji,et al.  Exergy analysis of energy utilization in the transportation sector in China , 2006 .

[10]  Ibrahim Dincer,et al.  Analysis of sectoral energy and exergy use of Saudi Arabia , 2004 .

[11]  Ibrahim Dincer,et al.  Energy and exergy utilization in transportation sector of Saudi Arabia , 2004 .

[12]  Marc A. Rosen,et al.  Second‐law analysis: approaches and implications , 1999 .

[13]  Ivar S. Ertesvåg,et al.  Energy, exergy, and extended-exergy analysis of the Norwegian society 2000 , 2005 .

[14]  Ibrahim Dincer,et al.  Understanding energy and exergy efficiencies for improved energy management in power plants , 2007 .

[15]  Haji Hassan Masjuki,et al.  Energy and exergy analysis at the utility and commercial sectors of Malaysia , 2007 .

[16]  Haji Hassan Masjuki,et al.  An application of energy and exergy analysis in residential sector of Malaysia , 2007 .

[17]  I. Dincer.  The role of exergy in energy policy making , 2002 .

[18]  Jan Szargut,et al.  Exergy Analysis of Thermal, Chemical, and Metallurgical Processes , 1988 .

[19]  Ibrahim Dincer,et al.  Sectoral Energy and Exergy Modeling of Turkey , 1997 .

[20]  Enrico Sciubba,et al.  Exergy use in the Italian society , 1994 .

[21]  Göran Wall,et al.  Exergy conversion in the Japanese society , 1990 .

[22]  Ernst Worrell,et al.  Steam systems in industry: Energy use and energy efficiency improvement potentials , 2001 .

[23]  G. M. Reistad,et al.  AVAILABLE ENERGY CONVERSION AND UTILIZATION IN THE UNITED STATES , 1975 .

[24]  Mehmet Kanogˇlu,et al.  Performance characteristics of a Diesel engine power plant , 2005 .

[25]  T. J. Kotas,et al.  The Exergy Method of Thermal Plant Analysis , 2012 .

[26]  Arif Hepbasli,et al.  Analysis of energy and exergy use of the Turkish residential–commercial sector , 2005 .

[27]  Josua P. Meyer,et al.  Energy and exergy analyses of energy consumptions in the industrial sector in South Africa , 2007 .

[28]  Ibrahim Dincer,et al.  Energy and exergy use in public and private sector of Saudi Arabia , 2004 .

[29]  Haji Hassan Masjuki,et al.  An estimation of the energy and exergy efficiencies for the energy resources consumption in the transportation sector in Malaysia , 2007 .

[30]  Geoffrey P. Hammond,et al.  Exergy analysis of the United Kingdom energy system , 2001 .

[31]  J. J. Al-Bagawi,et al.  Energy and exergy analysis of Ghazlan Power Plant , 1994 .

[32]  S. K. Som,et al.  Thermodynamic irreversibilities and exergy balance in combustion processes , 2008 .

[33]  Saad Mekhilef,et al.  Energy and emission analysis for industrial motors in Malaysia , 2009 .

[34]  Y. Çengel,et al.  Thermodynamics : An Engineering Approach , 1989 .

[35]  M. A. Rosen,et al.  Evaluation of energy utilization efficiency in Canada using energy and exergy analyses , 1992 .

[36]  Isam H. Aljundi,et al.  Energy and exergy analysis of a steam power plant in Jordan , 2009 .

[37]  Rahman Saidur,et al.  Analysis of energy and exergy use for process heating in the industrial sector of Malaysia , 2006 .

[38]  Isam H. Aljundi,et al.  Second-law analysis of a reverse osmosis plant in Jordan , 2009 .

[39]  Ivar S. Ertesvåg,et al.  Exergy analysis of the Norwegian society , 2000 .

[40]  Si̇bel Özdoĝan,et al.  Energy and exergy analyses of selected Turkish industries , 1995 .

[41]  Arif Hepbasli,et al.  A review and assessment of the energy utilization efficiency in the Turkish industrial sector using energy and exergy analysis method , 2007 .