The overall thermal transfer value (OTTV) concept has been extended to
correlate it with the chiller load through DOE-2 computer simulations
. A survey of 83 commercial buildings completed between 1982 and 1992
indicates that about one-third of the existing building-envelope desig
ns will not meet a proposed 35W/m(2) OTTV limit, which will be introdu
ced in late 1994. Impacts of this legislation on electricity use in th
e commercial sector are assessed.