1. Apparatus for heating moving fluids, particularly intravenous fluids, with a housing for a fluid containing at least one fluid passage through which fluid can be drawn from the inlet housing for fluid to its outlet channel, a heating unit comprising at least one flat electrical heating element for heating the fluid flowing through the fluid passage, and a temperature control unit, comprising at least about yn temperature sensor disposed on the planar heating element, characterized in that the planar heating element has a flexible or rigid printed circuit board coated with a first flat side and / or the second flat side heating tracks (113), wherein the planar heating element is disposed within the housing for fluid and at least partially forms a wall of the channel for a fluid, wherein the body fluid is profiled so as to form a meandering or spiral channel ekuchey sredy.2. The apparatus according to claim 1, characterized in that the planar heating element (112) is formed integrally with the contact strip (114) which extends outside the housing (111) for the fluid along its longitudinal sides (115) .3. The apparatus according to claim 1 or 2, characterized in that the heating track (113, 113 ) extend along meandering path from the contact pads (114) to the opposite longitudinal side of the housing (111) for fluid sredy.4. The apparatus according to claim 1 or 2, characterized in that the housing (111) for the fluid has two halves (111 , 111 "1. Устройство для нагревания движущихся текучих сред, в частности внутривенных текучих сред, с корпусом для текучей среды, содержащим по меньшей мере один канал для текучей среды, через который текучая среда может быть проведена от впускного канала корпуса для текучей среды до его выпускного канала, с нагревательным блоком, содержащим по меньшей мере один электрический плоский нагревательный элемент, для нагревания текучей среды, протекающей через канал для текучей среды, и с блоком регулирования температуры, содержащим по ме