www.fueloilnews.com | FUEL OIL NEWS | AprIL 2015 27
HVAC/HYDRONICS
N e w s
ASHrAE/IES pUbLISH
UpdAtEd StANdArd ON
ENErgy EFFIcIENcy IN
ExIStINg bUILdINgS
A newly revised standard from ASHRAE
and IES seeks to provide greater guidance
and a more comprehensive approach to
retrofit of existing buildings for increased
energy efficiency.
ANSI/ASHRAE/IES Standard 100-
2015, Energy Efficiency in Existing
Buildings, provides comprehensive and
detailed descriptions of the processes and
procedures for the retrofit of existing
residential and commercial buildings in
order to achieve greater measured energy
efficiency. Appendices are included for
life-cycle cost analysis procedures as well
as identification of potential energy con-
servation measures.
"The total primary energy used in both
residential and commercial building sectors
is expected by the U.S. Energy Information
Administration to rise each year for the
next several decades in spite of aggressive
efficiency improvements in new construc-
tion," Rick Hermans, chair of the Standard
100 committee, said. "In order to reduce the
overall impact of energy used by residen-
tial and commercial buildings, the existing
building stock must become more efficient.
This revision to Standard 100 provides the
means to accomplish that goal."
The standard addresses both residential
and commercial buildings. It addresses
single and multiple activity buildings with
variable occupancy periods and identi-
fies the approach for 53 building types in
17 climate zones/subzones. It identifies
requirements for buildings undergoing
retrofits that do not fall under the scope
of either ANSI/ASHRAE/IES Standard
90.1-2013, Energy Standard for Buildings
Except Low-Rise Residential Buildings, or
ANSI/ASHRAE/IES Standard 90.2-2007,
Energy Standard for Low-Rise Residential
Buildings.
Standard 100 directly addresses a build-
ing's energy-use efficiency in a quantitative
manner and provides a means to improve
that efficiency with an objective bench-
mark created with the assistance of the
Energy Information Administration, the
Federal Energy Management Program and
Oak Ridge National Laboratory.
Recognizing that the actual occupancy
of the building plays a key role in its per-
formance, the standard establishes the need
for development of an energy management
plan and an operation and maintenance
program. It also addresses the requirements
for ongoing commissioning.
The standard takes advantage of the
fact that any building that has been in
operation for at least twelve months can
quickly determine its performance rela-
