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Technical Brief

Comparative Study of Thermal Conductivity Values of Different Percentage Compositions of Ground Arachis hypogea (Groundnut) Husk and Vigna unguiculata (Beans) Husk Compressed Fiberboards

[+] Author and Article Information
Sunday E. Etuk

Department of Physics,
University of Uyo,
Uyo 520103, Akwa Ibom, Nigeria

Akpan N. Ikot

Department of Physics,
University of Port Harcourt,
Choba 500262, Rivers State, Nigeria

Nyakno J. George

Department of Physics,
Akwa Ibom State University,
Ikot Akpaden 520102, Nigeria

Samuel D. Ekpe

Department of Electrical/Electronics,
University of Alberta,
Edmonton, AB T6G 2R3, Canada

Ekong U. Nathaniel

Department of Physics,
Akwa Ibom State University,
Ikot Akpaden 520103, Nigeria

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received May 1, 2015; final manuscript received August 11, 2015; published online November 17, 2015. Assoc. Editor: Srinath V. Ekkad.

J. Thermal Sci. Eng. Appl 8(2), 024501 (Nov 17, 2015) (4 pages) Paper No: TSEA-15-1132; doi: 10.1115/1.4031887 History: Received May 01, 2015; Revised August 11, 2015

Thermal conductivity values of compressed boards made of ground Arachis hypogea husk and Vigna unguiculata husk as binder at different percentage compositions at a temperature of 303 K were investigated using steady-state method. Other thermal properties including specific heat capacity, density, thermal absorptivity, and diffusivity values were also estimated for the prepared samples. Comparative studies of the determined values for the board at different proportions or ratios of combination of A. hypogeal ground husk with V. unguiculata ground husk reveal that thermal conductivity value decreases with an increase in the percentage content of A. hypogea husk contents. A fitting polynomial regression analysis reveals a correlation coefficient of 99.6%. The range of thermal conductivity values falls within the range of conventional good thermal insulators. Thus, the husks are potential ecofriendly raw materials for insulation board for cold building design and other thermal envelops.

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Grahic Jump Location
Fig. 1

Regression curve of thermal conductivity of compressed component (%)

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