Guarded hot box measurements of the dynamic heat transmission characteristics of seven wall specimens - Part II

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TypeArticle
Journal titleASHRAE Transactions
ISSN0001-2505
Volume99
Issue1
Pages643660; # of pages: 18
SubjectWalls; Heat Transfer; Moisture performance; Murs; Transfert de chaleur
AbstractASHRAE Research Project 515 had the goal of producing measured dynamic heat transmission characteristics of walls. The work was undertaken utilizing a guarded hot box facility. The measured dynamic heat transmission characteristics are used to confirm the data and procedures provided in the ASHRAE Handbook-Fundamentals for predicting dynamic heat transfer. The steady-state (thermal resistance) and dynamic heat transmission characteristics of seven wall specimens were measured. The test specimens represented wall types ranging in construction from an insulated steel stud wall with stucco finish to air insulated concrete block wall with brick veneer finish. For all specimens, the measured frequency response compared quite well with the predicted frequency response. On the other hand, the measured thermal resistance varied from 45% to 90% of the predicted them1al resistance. It is concluded that, within the constraints imposed on the equations and data and assuming actual assembly thermal resistance, heat flux predicted using the Handbook z-transfer function coefficients will be accurate enough for practical purposes.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
NotePaper presented at the ASHRAE Winter Meeting held in Chicago, IL, USA, January 23-27, 1993
Peer reviewedYes
IdentifierIRC-P-1781
NRC number33997
1901
NPARC number20377781
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Record identifier6e891a9c-4ac0-44c2-81b4-3ee63532df81
Record created2012-07-24
Record modified2016-05-09
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