1.11 Variable Insulation Conductivity

The following correlation is used. It is based on the correlation used in EnergyGauge USA (Parker, et al, 1999) which is based on Wilkes (1981) data:

oF.

where,

k = insulation conductivity (Btu/hr-ft-R) at the average insulation temperature,

k_n = nominal insulation conductivity (Btu/hr-ft-R) for insulation at 70 F.