Vehicle electrically-driven A/C systems have been modeled using NREL's (National Renewable Energy Laboratory) transient A/C system model and optimized through multi-variable design optimization techniques within the SINDA/FLUINT thermal-hydraulic analysis package. Electrically-driven compressor A/C systems represent a potentially important design approach to higher-performance vehicle A/C systems. Design optimization results demonstrate significant improvements in A/C system COP (System Coefficient of Performance) are possible, particularly system COP > 3, in a properly optimized, electrically-driven A/C system with a dynamic control strategy. The system optimization work investigated various dynamic A/C system design strategies employing dual-compressor-speeds to evaluate their effects on system performance. A new system optimization methodology also has been developed which can systematically quantify the impact on A/C system design and performance resulting from varying degrees of design influence being given to widely different design objectives. The technique is based upon formulating optimization objective functions from linear combinations of critical design performance parameters that characterize independent design goals. The technique has been demonstrated by giving varying degrees of design influence to maximizing system COP and maximizing evaporator cooling capacity over given drive cycles, such as the SC03 and US06.
Multi-variable optimization of electrically-driven vehicle air-conditioning systems using transient performance analysis
Multivariable Optimierung von elektrisch betriebenen Fahrzeugklimatisierungssystemen mit Hilfe einer transienten Leistungsanalyse
2003
14 Seiten, 5 Bilder, 3 Tabellen
Conference paper
English
Automotive engineering | 2003
|British Library Conference Proceedings | 2003
|SAE Technical Papers | 2001
|Automotive engineering | 2001
|British Library Conference Proceedings | 2001
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