Client
U.S. Department of Energy
Project Objectives
- Develop a numerical weather corrector to normalize outdoor vehicle testing during various seasons and weather conditions
- The weather corrector can then be used to normalize all outdoor vehicle tests to a standard day. This allows for a more accurate comparison of outdoor vehicle tests.
Summary of Project and Results (Non-Confidential)
- A 2-node model of the vehicle-ambient environment interaction was developed in Matlab. One node was used for the cabin mass, and another for the cabin air.
- The heat transfer to each cabin mass component was calculated and averaged to convolute spatial components into one node
- Solar radiation absorption, vehicle emission, outer vehicle convection, and inner cabin convection mechanisms were modeled
- The numerical weather corrector was found to accurately predict outdoor testing results in a variety of weather conditions and solar loads.

Typical Cabin Air and Cabin Mass Simulation Results
