Microchannel Heat Exchangers (MCHEs) are increasingly being adopted in the railway industry for their high thermal efficiency, compact design, and lightweight construction. These heat exchangers use multiple small channels to maximize surface area for heat transfer, making them ideal for cooling systems in modern rail vehicles, including HVAC units, traction inverters, and onboard electronics. Their compact form factor allows for space-saving installation, while their corrosion-resistant aluminum construction ensures durability in harsh railway environments. MCHEs contribute to energy efficiency, reduced maintenance needs, and overall system reliability, aligning with the railway sector’s goals of sustainability, performance optimization, and enhanced passenger comfort.