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 LANTNAVFACENGCOM A&E GUIDE
4/17/93
4.6.4.2 ENERGY CONSERVATION METHODS
The intent is to bring a multidiscipline approach to the project which recognizes and
prioritizes the major load components of the building and focuses efforts on these to meet design
energy targets.
A. The Solar Analysis Form (Form S-1) and the Energy Analysis Form
(Form E-1) at the end of this section must be submitted to this Command, attention the
PM, by the A&E prior to the 35% basis of design. The submittal of these forms is
appropriate at the project's 15% stage to allow for a review by the
LANTNAVFACENGCOM Mechanical Engineering Branch.
The number and type of alternatives to be analyzed will be based on
project information provided in scope of work. Form E-1 shall indicate the proposed
alternatives and zones and include the best available floor plan. This Command will
review the recommendations and return the form to the A&E: Approved, approved as
noted or disapproved. The remaining analysis does not require approval prior to run
but must contain logic for selection.
Selection of energy analysis alternatives on Form E-1 should concentrate
on other (architectural, electrical) aspects of the project when the type of building, such
as a BOQ, an airfield hangar, etc., has been previously studied or a particular
mechanical system is considered most desirable. Contact the Mechanical Engineering
Branch prior to submitting Forms E-1 and S-1 if this applies or if you have any
questions.
B. After receiving the approved forms, the A&E shall perform a
computerized energy analysis and a life cycle cost analysis for an new building or
major renovation project that is only heated and exceeds 20,000 ft 2 [1,858m2], or is
heated and air-conditioned and exceeds 8,000 ft2 [743m2]. The computer program shall
be a professionally recognized and proven program which makes hourly calculations
as a basis. Programs available are Carrier EC 20-II HAP, DOE 2.1, and Trane Trace-
Ultra. If other programs are to be considered, documentation showing Federal and
State approval should be forwarded for approval prior to sending in the energy
analysis with the 35% submittal. Facilities with less than the square footage can use
either manual or computerized methods to meet the energy analysis requirement. A
copy of "Instructions for Preparation of Economic Analysis (JAN 90)" is available from
the LANTNAVFACENGCOM Cost Engineering Branch as a guide in proper economic
analysis format. Contact the Mechanical Engineering Branch for the utility rates to use
in the analysis.
C. Within the limits of functionality and life cycle cost effectiveness, all
facilities shall be designed to meet the design energy target shown in Table 8-1 of
MIL-HDBK-1190. To establish the domestic hot water load portion of the design
energy target use "average day" values from table one, chapter 54 of the 1987 ASHRAE,
HVAC Systems and Applications. Use ASHRAE standard 90.1-1989-Section 8.5 to
determine "U" factors instead of previous DOD criteria.
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