The range of electric vehicles is significantly reduced by cabin heating. Concepts to reduce the heating power are the insulation of the cabin and the windows, local heating and airflow recirculation. However, recirculation at cold ambient conditions quickly leads to window fogging. To predict the saving potential of various measures, a numerical cabin model is developed, including submodels for cabin airflow, the heat transfer, thermal comfort and a new model for window fogging. Experiments with a new contact angle measurement technique are performed to validate the simulation of window fogging.
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The range of electric vehicles is significantly reduced by cabin heating. Concepts to reduce the heating power are the insulation of the cabin and the windows, local heating and airflow recirculation. However, recirculation at cold ambient conditions quickly leads to window fogging. To predict the saving potential of various measures, a numerical cabin model is developed, including submodels for cabin airflow, the heat transfer, thermal comfort and a new model for window fogging. Experiments wit...
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