ABSTRACT
The comprehensive exergy characteristics of thirty two rice husk samples including exergy values (moisture related, S related, ash related, and LHV related) and exergy percentages (moisture related, S related, ash related, and LHV related) were investigated in this study. The results show that the moisture related exergy, S related exergy, ash related exergy, and LHV related exergy are in the ranges of 0-327.93, 0-67.78, 17.88-131.97, and 10577.05-19297.54 KJ/kg, respectively, for the rice husks. The exergy values of rice husks are in the range of 10918.01-19445.76 KJ/kg, and they are mainly determined by the LHV related exergy (96.81-99.70%), followed by moisture related exergy (0-2.66%), ash related exergy (0.11-0.78%), and S related exergy (0-0.43%).
KEYWORDS
PAPER SUBMITTED: 2017-08-12
PAPER REVISED: 2017-09-12
PAPER ACCEPTED: 2017-09-13
PUBLISHED ONLINE: 2017-12-23
THERMAL SCIENCE YEAR
2018, VOLUME
22, ISSUE
Supplement 2, PAGES [S429 - S437]
- FAO, 2017, www.fao.org/worldfoodsituation/csdb/en/
- Zhang, Y., et al., Physical properties of rice residues as affected by variety and climatic and cultivation conditions in three continents, Am. J. Appl. Sci., 9 (2012), pp. 1757-1768.
- Zhang, Y., et al., Comprehensive investigation into the exergy values of six rice husks, Am. J. Eng. Appl. Sci., 6 (2013), pp. 216-225.
- Wall, G., Exergy-a useful concept (3rd ed), Physical Resource Theory Group, Göteborg, 1986.
- Srinivas, T., et al., Thermodynamic Equilibrium Model and Exergy Analysis of a Biomass Gasifier, J. Energy Resour. Technol., 131 (2009), pp. 031801.
- Zhang, Y., et al., Thermodynamic evaluation of biomass gasification with air in autothermal gasifiers, Thermochim Acta, 519 (2011), pp. 65-71.
- Zhang, Y., et al., Energy and exergy analyses of syngas produced from rice husk gasification in an entrained flow reactor, J. Clean. Prod., 95 (2015), pp. 273-280.
- Zhang, Y., et al., An expeditious methodology for estimating the exergy of woody biomass by means of heating values, Fuel, 159 (2015), pp. 712-719.
- Zhang, Y., et al., Determination of the exergy of four wheat straws, Am. J. Biochem. Biotech., 9 (2013), pp. 338-347.
- Zhang, Y., et al., Influence of physical and thermochemical properties on the exergy of cereal straws, J. Fund. Renew. Energy Appl., 4 (2014), pp. 1-8.
- Zhang, Y., et al., Exergy of oat straw, Energy Source Part A, 38 (2016), pp. 1574-1581.
- Zhang, Y., et al., Exergy Characteristics of Woody Biomass, Energy Source Part A, 38 (2016), pp. 2438-2446.
- Zhang, Y., et al., Two equations for estimating the exergy of woody biomass based on the exergy values of ash contents, Energy, 106 (2016), pp. 400-407.
- Zhang, Y., et al., Is there a general relationship between the exergy and HHV for rice residues? Renew. Energy, 117 (2018), pp. 37-45.
- Szargut, J., et al., Exergy analysis of thermal, chemical, and metallurgical processes, Edwards Brothers, Ann Arbor, 1988.
- Moran, M. J., et al., Fundamentals of engineering thermodynamics (7th ed), John Wiley & Sons, Hoboken, 2011.
- Song, G., et al., A unified correlation for estimating specific chemical exergy of solid and liquid fuels, Energy, 40 (2012), pp. 164-173.
- Channiwala, S.A., Parikh, P.P., A unified correlation for estimating HHV of solid, liquid and gaseous fuels, Fuel, 81 (2002), pp. 1051-1063.
- Nilsson, D., Energy, exergy and emergy analysis of using straw as fuel in district heating plants, Biomass Bioenergy, 13 (1997), pp. 63-73.
- Zhang, Y., et al., Exergy analysis of biomass utilization via steam gasification and partial oxidation, Thermochim Acta, 538 (2012), pp. 21-28.
