Litres and crate capacity are visible container measures. You can also inspect the body geometry exposed to the surroundings, but that measurement alone does not prove insulation or assembled-system performance.
Set up comparisons with the same product, load quantity, preconditioning and route. If comparing body sizes, record fill level and arrangement too.
Before the trial, choose a measurement point in the product or a suitable representative load. Keep sensor positions consistent; note start and end readings, ambient conditions, duration and every lid opening.
Record external length, width and height, usable internal dimensions and lid perimeter separately. External surface area is a geometric comparison, not a heat-transfer coefficient.
Compare results with the model's technical sheet, operating conditions and acceptance criteria. Mark any different lid, gasket, load or opening pattern as part of the trial.
One favorable result cannot be generalized. Repeat the method before deciding; do not directly compare runs with unlike route, load or measurement conditions.
