District Warehouse - MI

Cambridge HTHV Space Heaters
Case Study

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OPERATING CONDITIONS

  • Operating Hours: 24 hrs/day 5 days/wk
  • Design Temperature:55° @ 0°
  • Thermostat Settings: 60°
  • Average Temperature: 60°
  • Heating System: Cambridge Space Heaters
    • 2 @ 900 MBH
    • Rooftop mounting

ACTUAL FUEL USE

for the 1997-98 heating season (3,162 Heating Degree Days @ 60°)
3.8 Btu / HDD / sq. ft.

CALCULATED OPERATING COST

for normal heating season (5,023 Heating Degree Days @ 65°
$0.09 / sq.ft. (Gas only @ $0.50/therm)

BUILDING DETAILS

  • Size: 117,990 sq.ft x 35 ft. High
  • Construction:
    • R-112Roof
    • R-8 Walls above 10'
    • R-2 Walls below 10'

DATALOGGER GRAPH

Logging period: December 18 - January 28 
Logging interval: 30 minutes