2014    Guam    Tropical    Energy    Code  -­‐  Mechanical  GTEC Conference William G Miller Jr 10:45-11:45, March 3 & 4, 2015

PART  5:  Ventilation  and  Air  Conditioning    Applicable to all equipment providing cooling,

dehumidification, and ventilation needs to a building

  Mandatory Provisions for Unitary Equipment such as window units, package units, and DX-split units that are air cooled or water cooled, that serve a single, and are < 65,000 BTU

  Programmable T-STAT W/ 7-DAY timer and nighttime setback (Unless < 6,800 BTUH OR operates continuously)

  Hotel/Motel shall have auto shut off when door and windows are open   US DOE Energy label such as Energy Star   Insulated Refrigerant Piping and Ducts

RECOMMENDATIONS    Condenser Coil Corrosion Coating:

  Guam’s salt spray and high humidity can deteriorate the performance and efficiency of the equipment. Although not mandated, it is recommended to provide corrosion coating on condenser coating and performance preventative

EQUIPMENT  PERFORMANCE  REQUIREMENTS    UNITARY EQUIPMENT – T 503.2.3(1), (2)   PACKAGE AIR TERMINALS – T 503.2.3(3)   BOILERS, GAS AND OIL-FIRED – T 503.2.3(5)   CONDENSING UNITS – T 503.2.3(6)   WATER CHILLING PACKAGES – T 503.2.3(7)

PART  6:  SERVICE  WATER  HEATING    Describes the Minimum Efficiency for domestic hot

water heaters, controls, and piping insulation   Efficiencies per Table 601 and Energy Star compliant   Aqua stat shall allow for a temperature set point of 110

degrees F for dwelling units and public lavatories, and 90 degrees F for other occupancies

  Equipment must have a integral Heat Trap or shall have a field installed Het Trap if non-circulating

  Piping shall be insulated (Continuously if circulating and the first 8 feet if non-circulating)

  Provide controls to turn OFF circulating systems when hot water system is not in use

NO  ENERGY  CODE  versus  GTEC    Effects of cooling load requirements with no roof

insulation:

NO  ENERGY  CODE  versus  GTEC    Effects of cooling load requirements with applying

reflective roof paint:

NO  ENERGY  CODE  versus  GTEC    Effects of cooling load requirements by applying R13 to

roof as required by GTEC:

SUMMARY    Typical 3-bedroom house ( ~1,400 sf) without the

GTEC would require 64,500 BTUH of cooling versus 50,200 BTUH with the GTEC

  An additional 14,300 BTU’s per Hour at peak   If the average home owner uses cooling for 8 hour per

day for 365 days in a year, that is 41,756,000 BTU’s more per year

GTEC  versus  2007  ASHRAE  90.1  Standard  

30  %  Energy  Reduction  of  base  line  ASHRAE  90.2  standard    Effects of cooling load requirements by applying R30 to

roof and R19 to the walls:

Thank  You