This content is not included in your SAE MOBILUS subscription, or you are not logged in.
New Generation Integrated Automotive Thermal System
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 07, 2005 by SAE International in United States
Annotation ability available
The integration of a thermal system for automotive applications is presented in this study. The integrated system is able to cool or heat the passenger cabin of a conventional automobile. Most cars use separate cooling and heating systems to control the cabin interior air temperature for passenger comfort. The cooling system uses a standard refrigeration loop to cool the cabin in summer while the heating system uses the heat supplied from the engine to warm the cabin in winter. However, in recent automotive applications with alternative fuel sources, such as fuel cell or direct-injection diesel engines, the heat rejected from the engine is not sufficient to warm the cabin in cold climates. On the other hand, the cooling system which normally uses a vapor compression refrigeration cycle is able to cool the cabin as desired shortly after starting the engine in warm climates. A dual-loop cooling and heating system, which can work in both cooling and heating modes, may overcome this problem. The proposed system integrates both air conditioning and heat pump modes so that by simply switching a series of valves the cabin can be cooled or heated. In this research project, such a dual-loop automotive thermal system was designed and fabricated. Experiments were conducted and experimental data were collected and analyzed. This article focuses on the air conditioning (cooling) mode while the dual-loop system undergoes a cabin cooling process for summer conditions. The test results showed that the dual-loop system was a viable option resulting in acceptable coefficients of performance, as compared to the conventional automotive air conditioning system. Further optimization of the proposed integrated system is expected to enhance performance of the system.
|Technical Paper||Safety Evaluation on Fuel Cell Stacks Fire and Toxicity Evaluation of Material Combustion Gas for FCV|
|Technical Paper||Methanol as a Fuel: A Review with Bibliography|
|Ground Vehicle Standard||Testing Performance of the Fuel Processor Subsystem of an Automotive Fuel Cell System|
CitationJokar, A., Hosni, M., and Eckels, S., "New Generation Integrated Automotive Thermal System," SAE Technical Paper 2005-01-3476, 2005, https://doi.org/10.4271/2005-01-3476.
- Antonijevic D. Heckt R. 2004 “Heat pump supplemental heating system for motor vehicles,” Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 218 10 1111 1115
- Domitrovic R. E. Mei V. C. Chen F.C. 1997 “Simulation of an automotive heat pump,” ASHRAE Transactions 103 291 296
- Hamner R. M. 1981 “Use of waste heat for automotive air conditioning,” SAE Preprints, No. 810504
- Jokar A. Eckels S. J. Hosni M. H. Gielda T. P. 2004 “Condensation heat transfer and pressure drop of the brazed plate heat exchangers using R-134a,” Journal of Enhanced Heat Transfer 11 2 161 182
- Jokar A. Eckels S. J. Hosni M. H. 2004 “Thermo-hydrodynamic of the evaporation of refrigerant R-134a in brazed plate heat exchangers,” Proceedings of the 2004 ASME Heat Transfer/Fluids Engineering Summer Conference Charlotte, NC
- Jokar A. Eckels S. J. Hosni M. H. 2004 “Evaluation of heat transfer and pressure drop for the heater-core in an automotive heat pump system,” Proceedings of the 2004 ASME International Mechanical Engineering Congress and RD&D Expo Anaheim, CA
- Jokar A. Hosni M. H. Eckels S. J. 2005 “Heat transfer and pressure drop characteristics for the rectangular minichannel heat exchanger in an automotive air conditioning system,” Proceedings of the 2005 ASME Heat Transfer Summer Conference,” San Francisco, CA
- Jokar A. Hosni, M. H. Eckels, S. J. 2005 “Correlations for Heat Transfer and Pressure Drop of Glycol-Water and Air Flows in Minichannel Heat Exchangers” ASHRAE Transactions 111 (Technical Paper-4803), ASHRAE Annual Meeting Denver, CO
- Jokar A. Hosni M. H. Eckels S. J. 2005 A Heat Pump for Automotive Application Proceedings of the 8 th International Energy Agency Heat Pump Conference Las Vegas, NV