J-22-Fort Huachuca Energy Efficiency Water Conservation Design Construct Guidelines.pdf

FtHuachuca Energy Efficiency, Water Conservation Design/Construction Guidelines and Operation Standards

Last Reviewed/Revised 1 August 2014

References: (a) Energy, Independence and Security Act of 2007

(b) Energy Policy Act of 2005.

(c) Presidential Executive Order 13423, "Strengthening Federal Environmental, Energy, and Transportation Management" of 24 Jan 07.

(d) Secretary of the Army Memorandum of 2006.

(e) Army Energy Security Implementation Strategy 13 Jan 2009

(f) Installation Management Community Campaign Plan 2010-2017 October 2010

(g) ASA Memorandum, Utilization of Efficient Lighting October 27, 2010

(h) Energy and Water Conservation Design Guide (for sustainment, Restoration and

Modernization [SRM] Projects and MILCON Construction) (i)Advanced Energy Design Guide for Small to Medium Office Bldgs (ASHRAE)

(j) Army Energy and Water Reporting System (AEWRS) requirements.

l.Purpose. The purpose of this instruction is to help achieve the energy policy goals established by references (a) through (h) and to reach a standard of building energy efficiency of30% less than ASHRAE 90.1- 2010, a reduction of 30% of the energy used in 2003 by 2015 at Ft Huachuca and achieve a net zerq ~y goal by 2025. Paragraph 3 (General Guidelines) shall take precedence over all other equipment listed in this guid~

2.Responsibility. All design and construction agencies for any and all projects on Fort Huachuca shall strictly adhere to the Anny energy efficiency guidelines in all tl1e above references, but are not limited to them. All Tenm1t Commands, Supported Cmmnm1ds, Departments and other agencies or entities shall incorporate these design m1d operation standards in all equipment replacement, facility renovation or new construction projects unless specifically waived in accordance with paragraph three of this instruction.

3.Gencral Guidelines. All design and construction shall consider the best renewable energy, energy efficient equipment available which has a favorable life cycle cost analysis (LCCA)- number of years must be justified for each different type of equipment. An LCCA shall be submitted for all construction and installed equipment. The Photovoltaic power using a DC micro-grid shall be incorporated wherever feasible. All water/condensate from any and all equipment shall be captured for reuse. All renewable energy produced must be recorded and reported to AEWRS ; notify the Ganison Energy Manager and provide the data required by AEWRS.

A. Lighting and Electrical. The following are minimum requirements and every effort should be made to exceed these requirements so that items will not require removal/demolition if they interfere with the Net Zero goal by 2025. New equipment/fixtures should be ENERGY STAR where possible but have a favorable LCCA. Lighting using photovoltaic power on a DC micro-grid is preferred (this may be required in the ncar future, so it would be best to use where feasible).

(1) Office and workspace lighting systems shall be LED, CFL or at the least high efficiency fluorescent, designed and installed to not exceed 0.5 watts per squarefoot in power density average for the entire space. Specific room densities can vary according to lighting power densities shown in the most recent American Society of Heating, Refrigerating and Air Conditioning Engineers and tl1e Illuminating Engineering Society ofNorth America standards (ASHRAE/IESNA 90.1 2010) minus 30%. Specialized lighting for Anti

TetTorism and Force Protection applications may be waived in accordm1ce with paragraph three of this instruction.

(2) Tl2 fluorescent, Mercury Vapor and Inca11descent fixtmes shall not be specified.

(3) Parldng lot a11d street lighting shall be LED or shielded LEP and not exceed ASHRAE/IESNA 90.1-2010 power density sta11dards and be equipped with photocell controls so that they turn off in the daylight.

(4) All individual offices, classrooms, restrooms and conference rooms shall be equipped with occupm1cy sensor type light switches (passive infrared) that turn off the lights when the space is unoccupied. If sensors ca11not be located in such a malll1er to detect occupa11cy, such as a space with systems fi.Jrniture and low ceiling heights, sensor light switches may be waived in accordm1ce with paragraph three of this instruction.

(5) All "Exit" signs shall be a maximum oftwo (2) Watts, have built-in battery backup and be "LED" fixtures. Where possible use photoluminescent (similar to Brady Glow) EXIT lights with zero energy consumed.

(6) National Electrical Ma11ufacturers Association (NEMA) "Premium E plus" or better electric motors shall be installed for all new and replacement motors. It is prohibited to rewind any motor for use on Fort Huachuca or for any equipment for which it is responsible.

(7) NEMA "TP-2 Class 3" or better efficiency dry type transformers shall be installed for all new m1d replacement applications.

(8) Alumimun wiring is prohibited within buildings for electrical power distribution.

(9) Day-lighting must be included in the lighting pla11 tmless the "simple payback" of the additional expense exceeds 15 yem·s. Exmnples of Day-lighting techniques include reflective light shelves, skylights and solar tubes with diffi.Jsers.

(1 0) Where technically and economically feasible ("simple payback" of marginal cost increase 10 years or less) all mechanical loads (especially HVAC) shall be served at 480V 3 phase m1d all mechanical equipment selected accordingly.

(11) All lights a11d light systems shall be controlled with an energy management system, wired and capable of being m1 integral part ofFmi Huachuca's expanding EMCS system.

B. Building Envelo~. The building envelope must meet the N ct Zero criteria by 2025. The following are minimum requirements and effort should be made to exceed these requirements.

(1) Low-sloped (<2:12) a11d high-sloped (>2:12) roofsmfaces shall be designed to maximize the e±licicncy rating in accorda11ce with the table below and in compliance with Energy Star, OR meet LEED requirements afterconsulting with DPW personnel. Reflective roof products must offer a warranty that is equal in all material respects to the stm1dard industry warranty for comparable non-reflective roof products. The preferable coating will be ceramic. [See 3 .B.( 4) below for more on roofs]

" _ ~ ' ' Requirements ' - , _ ' :.

Solar Reflectance Emissivity ·--~~~----~=-------i---------------------~

3 Years after 3 Years after Initial

Installation Installation Initial

,. 6% or less 6% or less 82% or greater 81% or greater

81% ot greater I 6% or less r---6-o/. __ o_o_r_le_s_s-~

82% or greater

(2) Window glazing shall be installed that is rated 050 or less U-value and a 020 or less Solar Heat Gain Coefficient, except when using "day-lighting," and is ENERGY STAR qualified,

(3) Buildings with direct solar exposure (no overhang) with more than 10 percent glass area of exterior surfaces (East, South or West facing), must have coatings to reflect at least 90 percent of the Infrared Solar striking these windows.

( 4) Minimum R30 ceiling-roof assembly (no "hot roof) and Rl9 wall assembly insulation value to reduce temperature conductance between the outside and the building's space conditioned interior, [See 3 .R(1) above for more on roofs]

C. Mechanical. The above references shall take precedence over the following. The following are minimum requirements and new construction/installation may be required to be removed/demolished if interfering with the Net Zero criteria by 2025.

(1) For large systems, examine heat flow through facility via computer economic analysis to ensure reduction in HV AC equipment size.

(2) Capture natural-energy flows, such as passive solar heating, day-lighting, natural ventilation, and occupant-generated heat

(3) Reduce internal loads by implementing day-lighting and using Energy Star-labeled equipment.

( 4) Divide tl1e building into thermal zones, resulting in higher system controllability and greater occupant satisfaction.

(5) Use multiple-zone control witl1in larger units.

( 6) Reduce system losses in ducts and piping,

(7) Use low-pressure duct worlc

(8) Use occupancy-based, time-of-use, and demand-based controls.

(9) Use energy recovery for ventilation air_

(1 0) Curtail electTic loads during peale demand periods (ice storage, etc}

(11) Operation Manual shall include suggestions for better efficiency.

(12) Include provisions for proper performance monitoring and verification for all energy flows.

(13) Changes to or installation ofHVAC equipment temperature sensing and controlling shall be done electronically using direct digital control, open protocol (LONWORK.S). All controls shall be connected to the Post-wide EMCS. No pneumatic controls shall be used.

(14) All condensate drains shall drain to the sanitary sewer system (so water will be recycled).

(15) Ground Source heat pumps shall be used for space heating and cooling purposes in smaller facilities, and where economical in larger facilities.

( 16) Electric resistance heaters as space heaters or in air conditioners are not authorized.

(17) Air-cooled water chillers shall

a. Not exceed 1 ton per 800 square feet (of cooled space) in capacity

b. Shall only be installed if efficiency rating meets or exceeds standards below.

Compressor Type and Capacity Part Load Optimized Chillers

~mmended~. -nB. est Availabl~ I . IPLV (kW/ton) IPLV (kW/ton)

:-------R-e-c-ip--r'-o-c._at_i_n __ g_(_1 ___ 5-to--n-s-) ~"'-----~·'--_ ---'--'-o-.9~0.:co~rless ~~~o:9o~~---··---

Scroll (5-50 tons) 0.86 or 0.83

Screw (50-100 tons) 0.80

Water-cooled water chillers shall only be installed if efficiency rating meets or exceeds standards below.

Compressor Type and Capacity

Centrifugal (150- 299 tons)

Centrifugal (300 - 2,000 tons) Rotary Screw (100- 150 t~~~~-~--OM~e;s·~----

Compressor Type and Capacity

Centrifugal (150 -· 299

Full Load Optimized Chillers

Recommended Full Load (kW/ton)

0.59or

Best Available Full-Load (kW/ton)

0.50

Centrifugal (300 - 2,000 tons)

Rotary Screw (100- 150 tons)

( 5) Central water chillers or air conditioning systems of 1 00 tons or larger shall use screw compressors, or more efficient teclmology. All systems over 200 tons shall use centrifugal compressors or more efficient technology.

(6) Preferably, package or split system air conditioning equipment will be powered by photovoltaic on a DC micro-grid; however, package or split systems air conditioning equipment may be installed with efficiency rating meeting or exceeding standards below and be ENERGY STAR qualified. "DX" cooled reciprocating air conditioning systems may not exceed 50 tons.

r·-----I>~;;-d"~~tTyp-;;-;~ds~~~---~------ii~~~~~;~d~d"i-~;~l-----~~-li~~-;i!~bk------

<6s MBtu!h (3 phase) !6.0 SEER or more SEER

~---~~ 135 MBtu/h ~---f3.0EEit or more 14 ER

~ 10.8 EER or more r !!.SEER·--- ! >135-240MBtu/h 11.2IPtVormore 13.3IPLV

(7) AHUs or package AC Units 10 tons or greater in size shall have an Economizer (or outside air capability) with enthalpy control installed to accommodate "free cooling" opportunities.

(8) AHU cooling coil design Face Velocities shall not exceed400 :tpm to aid dchmnidification.

(9) Chilled Water, Hot Water and Steam piping shall have thermal insulation jacketing that is compliant with ASHRAE 90.1-2004 standards.

(I 0) All water pumping and air blowing motors of 5 hp or greater shall be controlled by variable speed drives.

D. Plumbing (Water Cons~.

(1) No water/condensate/moistme shall be discharged to the ground/air, etc.- all water shall be conserved/recycled/reused in some manner.

a. Fire test connections and fire sprinkler drains shall discharge to the sm1itary sewer system so as to recycle the water discharged.

b. Clean condensate may be used for approvedlm1dscaping.

(2) New construction shall conserve all water(includingcondensate) in one manner or m1other;

including rain water harvesting.

(3) Criteria for plumbing fixtmes shall conform to standards set by the U.S. Environmental

SM

Protection Agency WaterSense program, where application is life cycle cost effective.

a. Toilets shall be installed to use a maximum of 1.28 gallons per flush (gpf).

b. Waterless Urinals are the standard for Ft Huachuca.

SM

c. WaterSense faucet sets for sinks shall use a maximum flow of 1.0 gpm or less.

(Automatic shutoff units shall use a maximtm1 of0.25 gallons per cycle or less.)

d. Showerheads shall use a maximum flow of2.0 GPM.

E. Commissioning

Commissioning is an integral part of design and the entire construction process (see ASHRAE Guidelines on Commissioning, most recent version). It is also an integral part of ensuring energy efficient systems are used and operated as intended; therefore, all projects shall include commissioning by a third patiy agency, AND DPW personnel shall have integral control of all commissioning dealing with Energy issues- especially the Energy Management Control System (EMCS). No EMCS shall be accepted without Energy Branch conctmence and si~.

F. Irrigation (Water Conservatio_!!}

Criteria for landscape irrigation shall conform to best available design standards, incorporating orientation and zoning, soil improvement, reduction in turf, mulch, lower water demand and native plants, and efficient irrigation.

(1) New or changes in landscaping at existing facilities shall be designed to utilize 50% less potable water for irrigation over conventional means.

(2) Landscaping at new construction or existiug building renovation facilities shall follow item

(1) above at a minimum to assist with LEED certification credits. Additional efforts shall be given to developing a design utilizing only captured rainwater, an approved non-potable water source approved for irrigation, or no irrigation at all.

G. Mechanicai/Elcctdcai/Office Equipment and Applian~

(1) All mechanical and electrical equipment (new and replacement) shall be US EPA "ENERGY STAR" qualified.

TM

(2) Water Heaters shall meet or exceed the efficiency of the GE GeoSpring Hybrid Water Heater.

(3) New appliances including refrigerators, clothes washers, clothes dryers, microwaves and coffee messes shall be US EPA "ENERGY STAR" qualified or better, and may only be waived in accordance witl1 the Design Policy Waiver paragraph of this instruction.

H. Facility OJ:!£r.atiQ!!.

(1) Non-housing facilities shall have temperature "set backs" to 60°F in heating mode and 80°F in cooling mode outside of normal working hours until two hours before occupancy commences for the following morning. Operational facilities tlmt are occupied 24 hours a day may be waived in accordance with the Design Policy Waiver paragraph of this instruction.

HVAC occupied set-points for all occupied spaces shall have 68 F as mid-setting in Heating Mode and 78 F as mid-setting in cooling mode.

(2) All individual desktop computers shall have their monitor turned off and all locally attached printers, fax machines, copiers, scanners, etc. shall be turned off completely at the end of each working day.

I. New Construction and Existing J!uilding Renovations.

All new constmction and existing building renovations shall strive for LEED Silver certification requirements per LEED-NC or LEED-EB standards. All facilities which need to have hot water for any purpose shall incorporate solar (thermal) heating for at least 5% of that fi.mction. All facilities shall also incorporate a minimum of 5% electrical requirement through the use of photo voltaic solar panels- preferably through a direct use of the DC power in some form of a "micro-grid" arrangement. Fundamental building elements and systems are to be installed, calibrated and operating per intended perfonnance and sustainability requirements. (Also see Commissioning requirements above.)

J. Reporting Energy Savings or Increase in Energy

(1) All replacement or new energy using devices/items/equipment/construction shall be reported to the DPW Energy Office ( william.a.hill.civ@mail.mil or Bldg. 22422, 3040 Butler Rd, Fmi Huachuca, AZ 85613) with the decrease or increase in energy use (KWH, BTU, Gallons, etc) as shown on the nameplate or calculated by the design engineer. DPW must track all energy use on Post and decrease overall use by 3% per year over the 2003 baseline, then work towards aN et Zero Post by 2025.

(2) Report the amotmts of all renewable energy installedlconstmcted (KWH, BTU, etc.).

(3) All renewable energy equipment will be metered and/or wired for reporting to the EMCS all renewable energy produced and renewable energy used.

4.Design Policy Waivers. Most items that may be waivcrcd will only receive the waiver until 2025 -if the waiver does not allow the goal of Net Zero to be achieved then it will be recended.

a. Waivers shall not be granted based on initial cost as the only factor. Cost shall not be considered unless a business case analysis is presented showing the full life cycle cost benefit of the alternative.

b. Waiver requests for exterior lighting must consider environmental factors as well as lost energy savings. Exterior lighting that disrupts protected or endangered species must be presented to show that all other alternatives have been considered prior to requesting a waiver.

c. Signed waiver requests shall be submitted by Tenant Command or Suppmicd Command via official letterhead to Garrison Commander Ft Huachuca, Arizona.

d. Requests shall include the overall Project Scope, Project Cost, Expected Start Date, the design policy or policies that can not be met and the justification for the waiver. Requests shall also include a Command point of contact. Requests shall indicate what item( s) shall be removed prior to 2020, if they interfere with the Net Zero goal.

e. Once received by Public Works Directorate, Ft. Huachuca, the requesting point of contact will be notified. Waiver approval or disapproval decisions shall take no longer than five working days unless an extension is agreed upon by the requesting Command.

f. Approved waivers shall be for a specific application only. Past approval for a specific application does not constitute justification for future approvals nor does it negate the necessity of applying for future waivers.