TY - JOUR
T1 - Measurements and two-dimensional computer simulations of the hygrothermal performance of a wood frame wall
AU - Geving, Stig
AU - Karagiozis, Achilles
AU - Salonvaara, Mikael
PY - 1997
Y1 - 1997
N2 - Knowledge of the expected long-term performance of building envelopes subjected to simultaneous heat and moisture transport is critical during the design stage. In the past thirty years researchers have concentrated their efforts in extensive laboratory experiments. These experiments have been expensive as well as time consuming to conduct due to the slow moisture transport phenomena. This paper critically investigates a set of experimental results generated from laboratory controlled measurements on a wood frame wall construction, by employing a state of the art hygrothermal model. The analysis was carried out using the LATENITE model, a three-dimensional heat and moisture transport program tailored specifically for building envelope investigations. For the present simulations this model was adapted for two-dimensional conditions and hourly hygrothermal performances were predicted for a laboratory instrumented wood frame wall section. The investigation showed three main advantages of combining measurements and simulations. By carrying out simulations early in the design stage of laboratory experiments the experimental design will probably yield better quantification of data, placement and types of sensors, and assessment of workmanship influences, etc. Measurements can calibrate, adapt, or check calculated results. Finally, simulations can be performed to explain and interpret experimental results. Marrying experiments and modelling allows researchers to generate effective hygrothermal performance guidelines.
AB - Knowledge of the expected long-term performance of building envelopes subjected to simultaneous heat and moisture transport is critical during the design stage. In the past thirty years researchers have concentrated their efforts in extensive laboratory experiments. These experiments have been expensive as well as time consuming to conduct due to the slow moisture transport phenomena. This paper critically investigates a set of experimental results generated from laboratory controlled measurements on a wood frame wall construction, by employing a state of the art hygrothermal model. The analysis was carried out using the LATENITE model, a three-dimensional heat and moisture transport program tailored specifically for building envelope investigations. For the present simulations this model was adapted for two-dimensional conditions and hourly hygrothermal performances were predicted for a laboratory instrumented wood frame wall section. The investigation showed three main advantages of combining measurements and simulations. By carrying out simulations early in the design stage of laboratory experiments the experimental design will probably yield better quantification of data, placement and types of sensors, and assessment of workmanship influences, etc. Measurements can calibrate, adapt, or check calculated results. Finally, simulations can be performed to explain and interpret experimental results. Marrying experiments and modelling allows researchers to generate effective hygrothermal performance guidelines.
UR - http://www.scopus.com/inward/record.url?scp=0031118237&partnerID=8YFLogxK
U2 - 10.1177/109719639702000404
DO - 10.1177/109719639702000404
M3 - Article
AN - SCOPUS:0031118237
SN - 1065-2744
VL - 20
SP - 301
EP - 319
JO - Journal of thermal insulation and building envelopes
JF - Journal of thermal insulation and building envelopes
ER -