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e. Combination Systems - For systems in which the heating, ventilating and/or
cooling are combined, repetition may be el iminated by consolidating the information.
f. Briefly describe the HVAC Control System type and functions.
4.6.4 ENERGY CONSERVATION
4.6.4.1 ENERGY CONSERVATION METHODS. The intent is to bring a
multidiscipline approach to the project, which recognize s and prioritizes the major load
components of the building and focuses efforts on these to meet design energy targets.
a. 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 number and type of alternatives to be analyzed will be based on project
information provided in the 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 alterna tives 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 Form E -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 any new building or major renovation project
that is only heated and exceeds 20,000 ft2 [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 cal culations 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 an alysis 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 is available from the PM as a guide in proper economic analysis
format.
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
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