The National Renewable Energy Laboratory (NREL) has developed a transient air conditioning (A/C) system model using SINDA/FLUINT analysis software. It captures all the relevant physics of transient A/C system performance, including two-phase flow effects in the evaporator and condenser, system mass effects, air side heat transfer on the condenser/evaporator, vehicle speed effects, temperature-dependent properties, and integration with a simplified cabin thermal model. It has demonstrated robust and powerful system design optimization capabilities. Single-variable and multiple variable design optimizations have been performed and are presented. Various system performance parameters can be optimized, including system COP, cabin cool-down time, and system heat load capacity. This work presents this new transient A/C system analysis and optimization tool and shows some high-level system design conclusions reached to date. The work focuses on R-134a A/C systems, but future efforts will modify the model to investigate the transient performance of alternative refrigerant systems such as carbon dioxide systems. NREL is integrating its transient air conditioning model into NREL's ADVISOR vehicle system analysis software, with the objective of simultaneously optimizing A/C system designs within the overall vehicle design optimization.


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    Titel :

    Optimization of Vehicle Air Conditioning Systems Using Transient Air Conditioning Performance Analysis


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    Vehicle Thermal Management Systems Conference & Exposition ; 2001



    Erscheinungsdatum :

    2001-05-14




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Optimization of vehicle air conditioning system using transient air conditioning performance analysis

    Hendricks,T.J. / National Renewable Energy Lab.,US | Kraftfahrwesen | 2001


    2001-01-1734 Optimization of Vehicle Air Conditioning Systems Using Transient Air Conditioning Performance Analysis

    Hendricks, T. J. / Society of Automotive Engineers | British Library Conference Proceedings | 2001




    Multi-variable optimization of electrically-driven vehicle air-conditioning systems using transient performance analysis

    Hendricks, T. J. / Institution of Mechanical Engineers / Society of Automotive Engineers | British Library Conference Proceedings | 2003