File(s) under permanent embargo
Numerical simulation and optimisation of automotive air-conditioning and defrosting ducts
conference contribution
posted on 2023-05-23, 07:52 authored by He, Z, Wang, T, Zhang, W, Xiaolin WangXiaolin WangWindshield defrosting performance affects the safety of drivers and passengers in automotives and it is a mandatory testing indicator in most national automotive standards. Therefore the structure design of defrosting ducts is a crucial part of automotive air-conditioning systems. This study focused on the structure of automotive defrosting ducts and used numerical simulation to investigate the defrosting effect and volume allocation of automotive air conditioning. A k-ε turbulence models is established to study the transient temperature distribution of the flow field along the windshield and hence investigates the defrosting effect. By using this established model, the shape of duct and airflow direction at the outlet of the defroster nozzle was optimized. The simulation results showed that the optimized defrosting duct provided the airflow sufficient momentum to blow across the inner surface of the windshield and side windows. It minimized the loss of airflow speed and ensured most of airflow to blow to upper edge of the windshield without detaching from the glass. This optimized design also reduced the air recirculation between the edge of the windshield and dashboard and hence reduced the energy consumption. It substantially improved the defrosting performance.
History
Publication title
Proceedings of the 12th International Conference on Sustainable Energy Technologies (SET 2013)Editors
Hongxing YangPagination
1-11ISBN
978-988-15439-5-0Department/School
School of EngineeringPublisher
Faculty of Construction and Environment & Research Institute for Sustainable Urban Development, The Hong Kong Polytechnic UniversityPlace of publication
ChinaEvent title
12th International Conference on Sustainable Energy Technologies (SET 2013)Event Venue
Hong Kong, ChinaDate of Event (Start Date)
2013-08-26Date of Event (End Date)
2013-08-29Rights statement
Copyright unknownRepository Status
- Restricted