Skip to main content

Official Journal of the Japan Wood Research Society

Table 3 Values used in model calculations and the optimal substance thermal conductivity \({\lambda }_{s}\)

From: Fuel and material utilization of a waste shiitake (Lentinula edodes) mushroom bed derived from hardwood chips II thermal conductivity of compression-dried waste mushroom beds

Mat type

Substance density \({\rho }_{\mathrm{h}}\)

Powder mat

Thermal conductivity (W/mK)

Powder

sample

n

Mean1 ± std2

(g/cm3)

Powder sample

\({\rho }_{\mathrm{m}}\) 3

(kg/m3)

V4

(%)

\({\lambda }_{a}\) 5

\({\lambda }_{m}\) 6

\({\lambda }_{s}\)

Waste mushroom bed

Mycelium

Raw wood

F2

10

1.622 a ± 0.046

1.550 b ± 0.031

1.569 a / b ± 0.076

F1

399

330

451

75.4

78.7

71.3

0.026

0.0675

0.0712

0.0632

0.288

0.368

0.218

  1. 1Means with different letters are significantly different at P = 0.05 among the three samples
  2. 2std: standard deviation
  3. 3Air-dry density at which the voids in the mat can be treated as static air (n = 5, moisture content: 7.9–9.0%)
  4. 4Values calculated using Eq. (5)
  5. 5Value corresponding to a specimen temperature of approximately 25 ℃
  6. 6Values on the regression line in Fig. 6