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Evaluation of the HVAC System of Passenger Cars and Prediction of the Microclimate in the Passenger Compartment by Application of Numerical Flow Analysis
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Abstract
In this study, the air flow through the complete HVAC system (Heating-Ventilation-Air-Conditioning system) together with the flow field in the passenger compartment of a new Mercedes is calculated using the commercial CFD program STAR-CD. Two operating conditions of the HVAC system have been considered, namely the standard winter heat-up and summer cool-down mode.
The computational model consists of around 6 million cells and includes all parts of the HVAC system (inlet plenum chamber, fan, filters, air distribution chamber with evaporator and heater, air ducts and vents) together with a detailed description of the passenger compartment containing four occupants.
The numerical results are used for the evaluation of different aspects related to the ventilation and air-conditioning of the car interior, e.g. air mass flux distribution to the different vents, ventilation of the frontal and rear legrooms, defrosting of the windscreen and the side windows, ventilation of the driver's side of the compartment in comparison to the passenger's side, thermal comfort of the occupants.
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Citation
Currle, J., Harper, M., Ross, F., and Heid, T., "Evaluation of the HVAC System of Passenger Cars and Prediction of the Microclimate in the Passenger Compartment by Application of Numerical Flow Analysis," SAE Technical Paper 971788, 1997, https://doi.org/10.4271/971788.Also In
References
- Currle, J. Simulation of the Two-Phase Flow in the Waterbox of a HVAC System SAE Paper 960962 1996
- Anderson, G. Hall, T. CFD analysis of climate control systems Automotive Engineer 1994
- Werner, F. Frik, S. Optimization of an automotive HVAC module by means of computational fluid dynamics VDI Berichte Nr. 1153 1994
- Fischer, D. Airflow Simulation Through Automotive Blowers Using Computational Fluid Dynamics SAE Paper 950438 1995
- Lin Chao-Hsin et al. An Experimental and Computational Study of Cooling in a Simplified GM-10 Passenger Compartment SAE Paper 910216 1991
- Ishihara, Y. et al. Determination of Flow Velocity Distribution in a Vehicle Interior Using a Visualization and Computational Techniques SAE Paper 910310 1991
- Currle, J. Application of Computational Fluid Dynamics for the Optimization of Air Ducts 29th ISATA Florence 1996
- Currle, J. Numerical Simulation of the Flow in a Passenger Compartment and Evaluation of Thermal Comfort of the Occupants SAE Paper 970529 1997
- Computational Dynamics Ltd. STAR-CD Manual Version 2.3 1996