Open AccessMeasurement of thermal properties of white radish (R. raphanistrum) using easily constructed probes
Author(s) -
Mfrekemfon Samuel Obot,
Changcheng Li,
Ting Fang,
Jinquan Chen
Publication year - 2017
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0171016
Subject(s) - thermal diffusivity , thermal conductivity , differential scanning calorimetry , heat capacity , calorimeter (particle physics) , thermal , materials science , specific heat , thermodynamics , thermal analysis , composite material , physics , optics , detector
Thermal properties are necessary for the design and control of processes and storage facilities of food materials. This study proposes the measurement of thermal properties using easily constructed probes with specific heat capacity calculated, as opposed to the use of Differential Scanning Calorimeter (DSC) or other. These probes were constructed and used to measure thermal properties of white radish in the temperature range of 80–20°C and moisture content of 91–6.1% wb. Results showed thermal properties were within the range of 0.71–0.111 Wm -1 C -1 for thermal conductivity, 1.869×10 −7 –0.72×10 −8 m 2 s -1 for thermal diffusivity and 4.316–1.977 kJ kg -1 C -1 for specific heat capacity. These results agree with reports for similar products studied using DSC and commercially available line heat source probes. Empirical models were developed for each property through linear multiple regressions. The data generated would be useful in modeling and control of its processing and equipment design.