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Impact of Paint Color on Rest Period Climate Control Loads in Long-Haul Trucks
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 01, 2014 by SAE International in United States
Annotation ability available
Cab climate conditioning is one of the primary reasons for operating the main engine in a long-haul truck during driver rest periods. In the United States, sleeper cab trucks use approximately 667 million gallons of fuel annually for rest period idling. The U.S. Department of Energy's National Renewable Energy Laboratory's (NREL) CoolCab Project works closely with industry to design efficient thermal management systems for long-haul trucks that minimize engine idling and fuel use while maintaining occupant comfort.
Heat transfer to the vehicle interior from opaque exterior surfaces is one of the major heat pathways that contribute to air conditioning loads during long-haul truck daytime rest period idling. To quantify the impact of paint color and the opportunity for advanced paints, NREL collaborated with Volvo Group North America, PPG Industries, and Dometic Environmental Corporation. Initial screening simulations using CoolCalc, NREL's rapid HVAC load estimation tool, showed promising air-conditioning load reductions due to paint color selection. Tests conducted at NREL's Vehicle Testing and Integration Facility using long-haul truck cab sections, “test bucks,” showed a 31.1% of maximum possible reduction in rise over ambient temperature and a 20.8% reduction in daily electric air conditioning energy use by switching from black to white paint. Additionally, changing from blue to an advanced color-matched solar reflective blue paint resulted in a 7.3% reduction in daily electric air conditioning energy use for weather conditions tested in Colorado. National-level modeling results using weather data from major U.S. cities indicated that the increase in heating loads due to lighter paint colors is much smaller than the reduction in cooling loads.
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- Jason Aaron Lustbader - National Renewable Energy Laboratory
- Cory Kreutzer - National Renewable Energy Laboratory
- Matthew A. Jeffers - National Renewable Energy Laboratory
- Steven Adelman - Volvo Group Trucks Technology
- Skip Yeakel - Volvo Group Trucks Technology
- Philip Brontz - PPG Industries Inc.
- Kurt Olson - PPG Industries Inc.
- James Ohlinger - PPG Industries Inc.
CitationLustbader, J., Kreutzer, C., Jeffers, M., Adelman, S. et al., "Impact of Paint Color on Rest Period Climate Control Loads in Long-Haul Trucks," SAE Technical Paper 2014-01-0680, 2014, https://doi.org/10.4271/2014-01-0680.
- Gaines, L., Vyas, A., and Anderson, J., “Estimation of Fuel Use by Idling Commercial Trucks,” 85th Annual Meeting of the Transportation Research Board, Washington, D.C., Paper No. 06-2567, January 22-26, 2006.
- Fender K. and Pierce D., “ATRI Operational Costs of Trucking 2012,” American Transportation Research Institute, Atlanta, GA, 2012.
- “Idling Regulations Compendium, American Transportation Research Institute,” http://atri-online.org/2013/02/20/idling-regulations-compendium/ Accessed on 9/16/2013.
- “Greenhouse Gas Emissions Standards and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles, Final Rule,” Federal Register 76 (15 September, 2011): 57106-57513.
- Roeth, M., Kircher, D., Smith, J., and Swim, R., “Barriers to the Increased Adoption of Fuel Efficiency Technologies in the North American On-Road Freight Sector,” Report for the International Council for Clean Transportation. NACFE. July 2013.
- Lustbader, J., Venson, T., Adelman, S., Dehart, C. et al., “Application of Sleeper Cab Thermal Management Technologies to Reduce Idle Climate Control Loads in Long-Haul Trucks,” SAE Technical Paper 2012-01-2052, 2012, doi:10.4271/2012-01-2052.
- Rugh, J., Farrington, R. Vehicle Ancillary Load Reduction Project Close-Out Report, National Renewable Energy Laboratory, NREL/TP-540-42454, January 2008.
- Levinson, R., Pan, H., Ban-Weiss, G., Rosado, P., Paolini, R., Akbari, H. “Potential benefits of solar reflective car shells: Cooler cabins, fuel savings and emissions,” Applied Energy, 2011, 88, 4343-4357.
- Lustbader, J., Rugh, J., Rister, B., and Venson, T., “CoolCalc: A Long-Haul Truck Thermal Load Estimation Tool,” SAE Technical Paper 2011-01-0656, 2011, doi:10.4271/2011-01-0656.
- Dieck, R.H., Steele, W.G., and Osolsobe, G., Test Uncertainty. ASME PTC 19.1-2005. New York, NY. American Society of Mechanical Engineers, 2005.
- “Cab Insulation Testing Methodology,” RP422A-1-9, in Technology and Maintenance Council's Recommended Maintenance Practices Manual, 2010-2011 edition, Arlington, VA: American Trucking Association, p. RP422A-1.
- http://www.dometic.com/enus/Americas/USA/Truck/ Accessed on 10/18/2013.
- “Vehicle and Systems Simulation and Testing 2012 Annual Progress Report,” DOE/EE-0834, Section IV.N. CoolCab Truck Thermal Load & Idle Reduction, pg. 284-291.
- http://rredc.nrel.gov/solar/old_data/nsrdb/1991-2005/tmy3/. Accessed 9/1/2013.