
117Thermal Environments and Vehicles
Trials should be set up with a specic aim, that is, evaluating glazing or an air
conditioning system, and the experimental protocol designed to focus on this aim.
In eld trials, it is often difcult to replicate the external environmental condi-
tions on a day-to-day basis, although in some parts of the world it is possible to
have consistent weather conditions over a period of weeks. Climate control set-
tings should be noted and xed and start up protocols between trials should be the
same. Fixed warm-up period for the vehicle, same time of day, and subject clothing
should all be controlled where pos ...