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Effects of HVAC Design Parameters on Passenger Thermal Comfort
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English
Abstract
Four design parameters: conditioned air flow rate, air-conditioning (A/C) outlet location, body vent location and glass properties were studied to evaluate their effects on passenger thermal comfort. By taking all these parameters into account, nine different cases were simulated for the steady-state cooling process in a simplified GM-10 passenger compartment. Three-dimensional air flow and temperature distributions for each case were obtained using VINE3D, which solves a set of partial differential equations governing mass, momentum and energy balance in the passenger compartment. Based on the computed air flow and temperature distributions, passenger thermal comfort was evaluated by Fanger's method.
A/C outlet location and total system flow rate are the most important parameters which influence thermal comfort. The location of the exit vents also plays a significant role on rear passenger comfort. Considering solar load is the major heat source in the passenger compartment, the glass properties have a great potential to reduce it. However, currently available range of glass materials is narrow. In this study, the glass properties have a smaller effect on thermal comfort. The results of this study can provide useful guidelines for setting A/C system requirements during the early stages of vehicle design.
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Citation
Lin, C., Han, T., and Koromilas, C., "Effects of HVAC Design Parameters on Passenger Thermal Comfort," SAE Technical Paper 920264, 1992, https://doi.org/10.4271/920264.Also In
References
- China, H. Yanagimoto, K. “Prediction of Internal Air Flow of Passenger Car by Three-Dimensional Numerical Flow Analysis,” JSAE 41 1376 1381 1987
- Han, T. “Three-Dimensional Navier-Stokes Simulation for Passenger Compartment Cooling,” Int. J. of Vehicle Design 10 2 175 186 1989
- Lin, C. H. Lelli, M. A. Han, T. Niemiec, R. J. Hammond, D. C. Jr. “A Experimental and Computational study of Cooling in a Simplified GM-10 Passenger Compartment,” SAE Paper , 910216 1991
- Han, T. Koromilas, C. A. Lin, C. H. “Development of an Integrated Thermal/Flow Analysis Code(VINE3D) and Validation on a Simplified GM-10 Passenger Compartment,” 1992
- Fanger, P. O. “Thermal Comfort, Analysis and Application in Environmental Engineering,” Danish Technical Press Copenhagen 1970
- Rohles, F. H. Jr. Wallis, S. B. “Comfort Criteria for Air Conditioned Automotive Vehicles,” SAE Paper , 790122 1979
- Launder, B. E. Spalding, D. B. “The Numerical Calculation of Turbulent Flows,” Computational Methods in Applied Mechanics and Engineering 3 269 289 1974