Load impacts of energy management hardware

Conference · Sat Apr 01 04:00:00 EST 1989

OSTI ID:6339336

MacDonald, J M; Sharp, T R

The impacts that energy management systems and control strategies have on energy loads are important to both the consumer and supplier. This paper summarizes the cooling energy use and demand profile changes for a small commercial bank building in which on/off control and temperature set/setback have been implemented via an energy management strategy centered around a programmable thermostat. The building consists primarily of office and open business areas and has approximately 4000 sq ft of conditioned space. Space conditioning is accomplished by three split-package air conditioners and one central gas-fired hot water boiler. Occupied lighting levels average 2 W/sq ft. The new control strategy provides an approximate 20% reduction in annual cooling energy use. Although cooling energy use has been reduced during nighttime unoccupied periods, the overall energy savings during weekdays is minimal. Cooling energy savings occur primarily during weekend periods. Nighttime thermostat setup has essentially shifted weekday energy use profiles and causes more intense energy demands during early morning hours. Monitored performance shows that the building is now using considerably less energy but still reaches approximately the same peak demand levels. 7 refs., 7 figs., 3 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6339336
• Report Number(s): CONF-8905123-1; ON: DE89010843
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
296000 -- Energy Planning & Policy-- Electric Power
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100 -- Energy Conservation
Consumption
& Utilization-- Buildings
320603* -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Public Utilities-- (1980-)
BUILDINGS
COMMERCIAL BUILDINGS
EFFICIENCY
ELECTRIC UTILITIES
ENERGY CONSERVATION
ENERGY CONSUMPTION
ENERGY EFFICIENCY
LOAD MANAGEMENT
MANAGEMENT
MONITORING
POWER DEMAND
PUBLIC UTILITIES