TY - JOUR
T1 - Improved direct solver for building energy simulation
AU - Crowley, M. E.
AU - Hashmi, M. S.J.
PY - 2000
Y1 - 2000
N2 - Finite-difference methods, when applied to the differential equations modelling energy flows in buildings, give rise to a system of non-linear difference equations. A frequently used direct solution method involving linearization is analyzed and a related method is proposed. These and one other connected method are compared using a building-related test problem prepared for this purpose. The proposed numerical method is found to produce least error, about 30% less than the commonly used method, and it is recommended for inclusion in building energy simulation software. A fundamental method for estimating the pre-conditioning period of a building, arising from the work, is discussed.
AB - Finite-difference methods, when applied to the differential equations modelling energy flows in buildings, give rise to a system of non-linear difference equations. A frequently used direct solution method involving linearization is analyzed and a related method is proposed. These and one other connected method are compared using a building-related test problem prepared for this purpose. The proposed numerical method is found to produce least error, about 30% less than the commonly used method, and it is recommended for inclusion in building energy simulation software. A fundamental method for estimating the pre-conditioning period of a building, arising from the work, is discussed.
UR - http://www.scopus.com/inward/record.url?scp=0034482674&partnerID=8YFLogxK
U2 - 10.1177/014362440002100304
DO - 10.1177/014362440002100304
M3 - Article
AN - SCOPUS:0034482674
SN - 0143-6244
VL - 21
SP - 167
EP - 174
JO - Building Services Engineering Research and Technology
JF - Building Services Engineering Research and Technology
IS - 3
ER -