Latent heat reservoir

The storage (1) has a heating element arranged between heat exchanger units, where the heat exchanger units have spacers. An inflow point of the exchanger units is arranged radially outside a surface region of the exchanger units. An outflow point of the heat exchanger units is arranged in a central portion of the exchanger units, so that heat exchanger fluid flows along the exchanger units over a flow cross-section in a radial direction. Horizontal bars of the heat exchanger fluid flowing from an inlet (10) to an outlet (11) exhibit prolonged length. The heating element is designed as a heating film. The heat exchanger fluid comprises liquid, gas and air.