Conceptual Reference Database for Building Envelope Research Prev
Next

Heat and moisture transfer in wood-based wall construction: measured versus predicted

Zarr, R. R., Burch, D. M. and Fanney, A. H.
1995
NIST Building Science Series 173, National Institute of Standards and Technology
heat transfer; mass transfer; moisture transfer; walls; wood; apparatus; building science; building technology; calibrated hot box; computer models; experiments; MOIST; relative humidity; temperature; thermal resistance; validation; thermal analysis

Zarr, R. R., Burch, D. M. and Fanney, A. H., (1995), "Heat and moisture transfer in wood-based wall construction: measured versus predicted", NIST Building Science Series 173, National Institute of Standards and Technology.
Abstract:
The wall specimens were initially pre-conditioned in order to establish initial moisture contents within the construction materials. The test period was partitioned into four winter periods and one summer period. At the end of the pre-conditioning period, the ambient temperature with, in the climatic chamber was reduced quickly to 7.2 'C for one day in preparation for the first series of diurnal sinewaves. The purpose of the first series of diurnal sinewaves was to investigate the time-dependent transfer of heat and moisture when the wall specimens were comparatively dry. During the second steady winter period, moisture migrated through the wall specimen and accumulated in the hygroscopic sheathing and siding materials. The purpose of the second series of diurnal sinewaves was to investigate the time-dependent transfer of heat and moisture when the wall specimens were comparatively moist. During the final summer period, the accumulated moisture migrated toward the interior surface thereby drying the exterior layers of construction.
Related Resources:

This publication in whole or part may be found online at: This link was checked on Dec. 2006here.
Related Concepts

Author Information and Other Publications Notes
Zarr, R. R.
  1. Experimental verification of a moisture and heat transfer model in the hygroscopic regime
  2. NIST/NRC-Canada interlaboratory comparison of guarded hot plate measurements: 1993-1997  
Burch, D. M.
  1. A computer analysis of the moisture performance of roof constructins in the U.S. DOE Moisture Control Handbook
  2. A mathematical analysis of moisture and heat transfer in the roof cavities of manufactured housing
  3. A prarmeteric study of wall moisture contents using a revised variable indoor relative humidity version of the "MOIST" transient heat and moisture transfer model
  4. An analysis of moisture accumulation in the roof cavities of manufactured housing
  5. Computer analysis of wall constructions in the moisture control handbook
  6. Empirical validation of a transient computer model for combined heat and moisture transfer
  7. Experimental verification of a moisture and heat transfer model in the hygroscopic regime
  8. Indoor ventilation requirements for manufactured housing
  9. Manufactured housing walls that provide satisfactory moisture performance in all climates
  10. MOIST: A PC program for predicting heat and moisture transfer in building envelopes, Release 3.0
  11. Water vapor permeability measurements of common building materials
  12. Water vapor sorption measurements of common building materials
  13. Water-vapor measurements of low-slope roofing materials  
Fanney, A. H.
  1. Evaluating building integrated photovoltaic performance models
  2. Experimental verification of a moisture and heat transfer model in the hygroscopic regime
  3. Prediction of Building Integrated Photovoltaic Cell Temperatures
  4. Test procedures for advanced insulation panels
  5. Water vapor permeability measurements of common building materials  


CRDBER, at CBS, BCEE, ENCS, Concordia,