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Predicting local thermal discomfort adjacent to glazing
journal contribution
posted on 2009-07-06, 11:30 authored by Simon J. Rees, Kevin LomasKevin Lomas, Dusan FialaThe sensations of thermal discomfort in the near-window
regions of rooms may be significant. Close to windows occupants
may be directly exposed to both transmitted solar irradiation
and enhanced long wave radiation exchange due to
window surfaces that are noticeably hotter or colder than other
room surfaces. The superior insulating qualities of modern
high performance glazing systems result in relatively higher
surface temperatures in wintertime. This may reduce the local
discomfort experienced by occupants and increase the utility
of glazed perimeter spaces. In evaluating glazing systems one
would like to quantify such benefits.
Prediction of comfort perception in this asymmetric radiant
environment is challenging. Being able to account for
local, and not just overall, sensations of discomfort is particularly
important. In this work a multi-segment dynamic
comfort model has been employed that incorporates recently
developed models of local thermal comfort response. The work
required the development of simulation methods able to predict
the detailed long-wave and convective exchanges to the
surrounding space and the absorbed solar irradiation. This
has been done in an efficient and generic manner so that parametric
studies of local comfort responses have been possible.
Such studies have been used to examine the relationships
between local discomfort and room and window temperatures
as well as the role solar irradiation and clothing may play in
determining satisfactory winter environmental conditions.
History
School
- Architecture, Building and Civil Engineering
Citation
REES, S.J., LOMAS, K.J. and FIALA, D., 2008. Predicting local thermal discomfort adjacent to glazing. ASHRAE Transactions, 114 (1), pp. 131-141Publisher
© ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers)Version
- AM (Accepted Manuscript)
Publication date
2008Notes
This paper was accepted for publciation in ASHRAE Transactions, Vol. 114, Part 1 [© 2008 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (www.ashrae.org)]. For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAE’s prior written permission. Contact ASHRAE at www.ashrae.orgISSN
0001-2505Language
- en