Two-dimensional transient heat transfer through composite wood frame walls - Field measurements and modeling

An experimental and theoretical study has been conducted on the importance of two-dimensional heat flow within insulated wood frame walls and the modeling techniques necessary for accurate simulation. Both steady and transient heat flows are considered. A two-dimensional finite difference model provides accurate detailed results that agree with measurements when appropriate thermophysical property values are used. One-dimensional models cannot completely describe the complex transient heat transfer in wood frame walls, however, the total surface heat transfer can be predicted using a framing correction to combine one-dimensional results between the framing and through the framing.