Mathematical Problems in Engineering

Research Article

Experimental Investigation of Thermal Conductivity and Specific Heat of the Calcium Phosphate Ore for a Drying Application

Table 3

Regression models for thermal conductivity tests.
MethodStepwise multiple linear regressionsVariance (10−3)
Forward stepwise multiple linear regression without constantk = 6 10−3 ∗ T − 1.3 10−6 ∗  + 4.7 10−4 ∗ MC21.49120.2028.763
Forward stepwise multiple linear regression with constantk = 0.18 − 4 10−4 ∗ dp + 4.7 10−4 ∗ MC21.68120.2108.763
Backward stepwise multiple linear regression without constantk = 3 10−4 ∗ T2 − 1.4 10−6 ∗  + 4.7 10−4 ∗ MC21.52120.2068.763
Backward stepwise multiple linear regression with constantk = 0.14 − 1.2 10−6 ∗  + 4.7 10−4 ∗ MC21.68120.2108.763