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Volume 20 (2006)
- Issue 4 Pages 166-
- Issue 3 Pages 109-
- Issue 2 Pages 70-
- Issue 1 Pages 14-
Volume 20, Issue 4
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Junich Fujino, Tomohiro Honda2006 Volume 20 Issue 4 Pages 166-172
Published: November 30, 2006
Released on J-STAGE: July 28, 2008
JOURNAL FREE ACCESSThe present paper deals with the measurement of the specific heat capacity of plastic waste / fly ash recycled composite and its components using both a differential scanning calorimeter and sapphire discs as the reference material. The measurement is carried out at the temperature below the melting point of plastic component. The constant heating rates are set at 2.5 and 10 K·min-1. The specific heat capacity of the recycled composite for the heating rates 2 and 5 K·min-1 increases from 1.3 to 1.6 kJ·kg-1·K-1 with increasing the temperature from 305 to 360 K. And the deviation of the data is within±3%. But the data for 10 K·min-1 are about 2% lower than those for 2 K·min-1. The specific heat capacity is independent of the shape and mass of the recycled composite sample. The specific heat capacity of the fire retardant is equivalent to that of the fly ash. And the specific heat capacity of the recycled composite depends heavily on the content of the plastic waste.View full abstractDownload PDF (1641K) -
Daisuke Tomida, Satoshi Kenmochi, Takao Tsukada, Chiaki Yokoyama2006 Volume 20 Issue 4 Pages 173-178
Published: November 30, 2006
Released on J-STAGE: July 28, 2008
JOURNAL FREE ACCESSIonic liquids are salts that are liquid at room temperature. They draw much attention as new materials. In this study, a transient short-hot-wire apparatus was made and the thermal conductivity of 1-butyl-3 methylimidazolium tetrafluoroborate ([bmim][BF4]) was measured. The experimental temperatures were from 294 to 334 K and pressures were from 0.1 to 20 MPa. It was found that the thermal conductivity of ionic liquid has very small temperature and pressure dependence.View full abstractDownload PDF (366K) -
Masakazu Komatsu, Seiji Yamada, Takayoshi Takano2006 Volume 20 Issue 4 Pages 179-185
Published: November 30, 2006
Released on J-STAGE: July 28, 2008
JOURNAL FREE ACCESSIn the present study, an integrated thin film and thin wire thermocouple was designed in order to gain an understanding of heat transfer mechanism under the baking process. The thin film thermocouple was made by depositing Cu-Ni on a base of polyimide sheet, and five hot junctions were arranged at the regular interval. Thermal electromotive force was proportional to the temperature difference between reference and hot junction. Moreover, heat transfer properties under the baking process that are equivalent to effective thermal conductivity which include latent heat transport accompanied by water vapor diffusion in addition to heat conduction are investigated using the integrated thin wire thermocouple. The effective thermal conductivity of crumb increased according to the latent heat transportation effect by water vapor diffusion, and that of crust was in agreement with the value of the effective thermal conductivity of the crust which was measured by steady state parallel plate method.View full abstractDownload PDF (683K)
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