Abstract: There is provided a rail having a longitudinal direction defined by the rolling direction of a wheel of a rail vehicle along the rail, and a cross-sectional profile arranged normally to the longitudinal direction and having a vertical and a horizontal direction, the rail profile having a foot portion, a web portion and a head portion whereby the head portion has a lower head section fixedly connected to the web portion and an upper head section, the lower head section and the upper head section being separated from each other by a gap extending in the vertical and the horizontal direction, the gap comprising one or more elastomeric materials and the upper head section having a geometrical moment of inertia J in the vertical direction and an area A of the profile so that the product A×J1/3 is less than 230 cm10/3.

Abstract: A sorptive heat exchanger (E), which presents a plurality of heat exchange channels (10) in thermal contact with respective sorption channels (11), where sorption material (12) is fixed on the internal surfaces of channels (11).