Model & approach
- Model transient cabin heating
- Assess cooling operation at high ambient temperature
- Evaluate temperatures through the anthropometrically relevant occupied zone
Project / Rail HVAC
Thermal assessment of a rail driver cabin
A transient thermal-flow analysis assessed heating, cooling and temperature distribution in a driver cabin under extreme ambient conditions.
Engineering question
The climate-control concept had to be assessed for cold and hot ambient conditions and different driver positions.
Boundary conditions
- Cold and hot ambient conditions
- Separate heating and cooling states
- EN 14813-1 is referenced as a requirements framework in the original report
Results of the assessment
- The transient evaluation made cabin warm-up behaviour traceable for the cold case.
- Temperature distribution and local comfort differences were assessed for the hot case.
- The distribution was evaluated for drivers of different body heights.
Engineering consequence
The result fields provided a basis for assessing HVAC sizing and air distribution.
Context
The results apply to the stated boundary conditions and the HVAC concept assessed.
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