Opportunities to Reduce Air-Conditioning Loads Through Lower Cabin Soak Temperatures

Conference · Mon Jul 12 04:00:00 EDT 1999

OSTI ID:9822

Farrington, R; Cuddy, M; Keyser, M; Rugh, J

Air-conditioning loads can significantly reduce electric vehicle (EV) range and hybrid electric vehicle (HEV) fuel economy. In addition, a new U. S. emissions procedure, called the Supplemental Federal Test Procedure (SFTP), has provided the motivation for reducing the size of vehicle air-conditioning systems in the United States. The SFTP will measure tailpipe emissions with the air-conditioning system operating. If the size of the air-conditioning system is reduced, the cabin soak temperature must also be reduced, with no penalty in terms of passenger thermal comfort. This paper presents the impact of air-conditioning on EV range and HEV fuel economy, and compares the effectiveness of advanced glazing and cabin ventilation. Experimental and modeled results are presented.

• Research Organization: National Renewable Energy Lab., Golden, CO (US)
• Sponsoring Organization: US Department of Energy (US)
• OSTI ID: 9822
• Report Number(s): NREL/CP-540-26615; ON: DE00009822
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
33 ADVANCED PROPULSION SYSTEMS
AIR CONDITIONING
AIR-CONDITIONING
COOLING
ELECTRIC-POWERED VEHICLES
ENERGY
EV RANGE
FEDERAL TEST PROCEDURE
FUEL CONSUMPTION
GLAZING MATERIALS
HEAT EXCHANGE
OCCUPANTS
SOLAR ENERGY
THERMAL COMFORT
THERMAL MANAGEMENT
VENTILATION