Abstract

Some correlation values in the original work (Ref. 1) were not presented with enough decimal places. These errata update these values and present some revised results.

The coefficients listed in Table 2 of Ref. [1] do not feature an adequate number of digits to accurately model material behavior. The correct values are tabulated in Table 1 of this document. Included in these corrections are new coefficients for kbed, which was originally calculated using the truncated values. Figure 3 of the original work must also be updated based on these corrections. These updates are shown in Fig. 1 of this errata.

Fig. 1
Mg-Mn-O, particle, and bed thermal conductivities estimated using the dual porosity model
Fig. 1
Mg-Mn-O, particle, and bed thermal conductivities estimated using the dual porosity model
Close modal
Table 1

Fit coefficients for various thermal conductivities

PropertyABCDEFG
kair1.470 × 10−11−2.996 × 10−87.407 × 10−52.412 × 10−2
kMgO3.29 × 10−18−3.2666 × 10−141.2753 × 10−10−2.4997 × 10−72.7056 × 10−4−0.16452.849
kMnO4.1893−6.734 × 104
kbed5.94 × 10−10−2.08 × 10−75.77 × 10−44.12 × 10−1
PropertyABCDEFG
kair1.470 × 10−11−2.996 × 10−87.407 × 10−52.412 × 10−2
kMgO3.29 × 10−18−3.2666 × 10−141.2753 × 10−10−2.4997 × 10−72.7056 × 10−4−0.16452.849
kMnO4.1893−6.734 × 104
kbed5.94 × 10−10−2.08 × 10−75.77 × 10−44.12 × 10−1

The experimental data remain accurate, but the representation of the dual porosity model in Fig. 8 of the original work must be updated. Changes to the figure are depicted here in Fig. 2. The model maintains its accuracy in the low-temperature region but overpredicts more severely in the high-temperature region than the originally presented values. The coefficient of determination between the corrected dual porosity model and the experimental data is 0.71. The presented dual porosity model underperforms the method of Yagi and Kunii in predicting effective bed thermal conductivity.

Fig. 2
Experimental data compared to the proposed dual porosity model and the model of Yagi and Kunii
Fig. 2
Experimental data compared to the proposed dual porosity model and the model of Yagi and Kunii
Close modal

Funding Data

  • U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) under the Solar Energy Technology Office (Award No. DE-EE0008992; Funder ID: 10.13039/100006134).

  • United States Advanced Research Projects Agency-Energy (ARPA-E) (Award No. DE-AR0000991; Funder ID: 10.13039/100006133).

Nomenclature

k = thermal conductivity, W/m °C

References

1.
Hayes
,
M.
,
Masoomi
,
F.
,
Schimmels
,
P.
,
Randhir
,
K.
,
Klausner
,
J.
, and
Petrasch
,
J.
,
2021
, “
Ultra-High Temperature Thermal Conductivity Measurements of a Reactive Magnesium Manganese Oxide Porous Bed Using a Transient Hot Wire Method
,”
ASME J. Heat Mass Transfer-Trans. ASME
,
143
(
10
), p.
104502
.10.1115/1.4052081