Abstract: An instant tube heater for heating flowing liquid is disclosed that includes at least a hollow heating tube, an inlet connector, an outlet connector, and a temperature sensor. Also disclosed is a beverage preparation machine that includes the instant tube heater.

Abstract: The invention relates to an instant tube heater (1) for heating flowing liquid comprising: a hollow heating tube (2) comprising a tubular flow passage (20) extending along a central axis (I) for heating liquid as it flows through it, an inlet connector (3) sealingly connected to an inlet end (21) of the hollow heating tube, an outlet connector (4) sealingly connected to an outlet end (22) of the hollow heating tube, a temperature sensor (5) connected to the outlet connector (4) for sensing the temperature of liquid leaving the heating tube, wherein an inlet flow deviating member (6) is positioned locally at the inlet end (21) of the heating tube (2) for forcing the flow of liquid entering the tubular passage of the heating tube in at least one direction away from the direction of the central axis (I) of the tubular passage.

Abstract: A beverage production system is disclosed that includes a capsule and a beverage production machine designed for producing a beverage from ingredient(s) in the capsule. At least a portion of the outer surface of the capsule includes at least one metallic and/or electrically conductive area, and the beverage production machine includes means for generating and for contactlessly coupling electrical heating power to the metallic and/or electrically conductive area of the capsule.