5 July 2002
program in full compliance with the Federal Regulation and updated with the latest
economic factors is the Building Life Cycle Costing (BLCC) program available from the
National Institute of Standards and Technology. The Department of Energy's building
energy tools web site has a link to BLCC (under Energy Economics) and it can also be
found at http://www.eren.doe.gov/femp/techassist/softwaretools/softwaretools.html. The
appropriate cost and savings associated with the utilization of recovered energy, solar
heat, solar photovoltaic energy and other renewable or waste heat applications shall be
Previous Analyses. To the extent applicable to the project under design,
previous analyses or generic studies may be used for demonstrating compliance with
energy conservation criteria and for selecting among various alternatives and
implementing energy and water conserving features. Previous or generic studies may
also be updated and revised to reflect the project under design.
METERS. Utility meters can be a valuable tool in the effective management
of energy and water use at both the individual facility and installation level. A utility
meter will be furnished at each building, for each utility serving the building (e.g. steam,
high temperature hot water, electricity, natural gas, fuel oil, etc.) in the normal units of
the utility (i.e. kWh, cf, gallons, etc.), in accordance with the current requirements of the
respective military service or DoD component agency. Except for family housing, a
water meter should be provided for each facility where potable water demand is
estimated to exceed 378 541 L (100,000 gallons) per year. Design and installation of all
meters shall be capable of being easily connected to a base wide energy and utility
monitoring and control system directly or via the building HVAC control system.
SYSTEM SELECTION. HVAC system selection and energy and water
conservation features to be incorporated into the facility design shall be selected from
the viable alternatives based on an energy and life cycle cost analysis. Each of the
systems, features and components considered during the concept design or to be
considered later during the design process shall be identified and discussed as part of
the concept design package.
COMPLIANCE PATH AND PROJECT DOCUMENTATION. In addition to
the Mandatory Provisions, the path or method selected to ensure compliance with
ASHRAE Standard 90.1 shall be clearly indicated in the concept design. The reasons
and effects, on the energy usage and life cycle cost of the completed facility, of
selecting the particular compliance path or method shall be presented. The engineering
and economic analysis, including computer simulations and program inputs, outputs
and assumptions, used to support the HVAC system selection and other concept design
decisions shall be fully documented and made a part of the concept design package.
The forms from the ASHRAE Standard 90.1 User's Manual may be helpful in
developing the project and compliance documentation.