Dispensing system for delivering an operating fluid

A dispensing system (13, 13′) for delivering an operating fluid, in particular for delivering an aqueous urea solution or for delivering a compressed and/or liquefied gas, comprising

• a conveying device for the operating fluid,
• a dispensing valve (15) for dispensing the operating fluid, and
• a flexible dispensing hose (16), which connects the conveying device to the dispensing valve (15) in order to allow the dispensing valve (15) to be positioned on a filler neck of a vehicle tank or on an operating fluid container,
• characterized in that the dispensing hose (16) has a hose wall into which a heating wire (27, 28) routed along an axial direction of the dispensing hose (16) is embedded, wherein the dispensing hose (16) and the dispensing valve (15) are configured to be operated in a zone 2 according to ATEX Workplace Directive 1999/92/EC, and wherein the dispensing system (13, 13′) furthermore has an installation space which is designed to be zone-free, and a control unit (17), which is positioned in this installation space and is configured to output electric power to the heating wire (27, 28) in order to heat an outer surface of the dispensing hose and/or an operating fluid conveyed through the dispensing hose (16);
• wherein the control unit is furthermore designed to determine a power value taking into account a length of the hose (16) and to output a corresponding power to the heating wire (27, 28).