Patent ID: 7748197
Filing Date: 2010-07-06
Classification: G01K,G01N

Abstract:
1. A method of insulating a wall cavity, the method comprising: determining thermal properties of a fiberglass batt including effects of air flow through the fiberglass batt using a dynamic heat flow meter, the dynamic heat flow meter comprising: housing defining at least one cavity therein; first and second plates at least partially provided in the housing, wherein the fiberglass batt is provided between the first and second plates; means for providing the first and second plates at known, but different, temperatures when the fiberglass batt is therebetween; means for introducing an air flow into the cavity of the meter on one side of the batt, and permitting air from the air flow to exit the cavity from the other side of the batt; and means for measuring properties of the batt using each of the air flow and temperatures of the respective first and second plates; and after determining the thermal properties of the fiberglass batt including the effects of air flow through the fiberglass batt, adapting an insulation system in a wall cavity to compensate, or substantially compensate, for the effects of air flow through the fiberglass batt by providing foam insulation in the wall cavity and then providing a fiberglass batt in the cavity over the foam insulation, wherein the foam insulation is of sufficient thickness and R-value to compensate, or substantially compensate, for the effects of air flow through the fiberglass batt.