INVESTIGATION OF HEAT TRANSFER COEFFICIENTS FOR PASSENGER CAR BODY FENCING USING A CONTROLLED TEST ENVIRONMENT

Abstract. This study investigates the thermal performance of passenger car body enclosures
using a controlled test chamber. Due to the relatively high heat transfer coefficient of existing designs,
the need for improved thermal insulation has been identified. Modern insulation materials with low
thermal conductivity were analyzed, and four prototype samples were tested. The best results were
obtained from samples using corundum and polyurethane foam. These materials also provide
effective corrosion protection. To ensure measurement accuracy, the test chamber was calibrated.
The study presents a validated methodology for selecting thermal insulation materials for railway
rolling stock.