Wärmespeichergerät und seine Anwendung in Heizungssystemen

The invention relates to an apparatus for the storage of heat, which apparatus contains a heat storage mass (5) and conduits (3, 4) for the supply and discharge of heat respectively to and from the storage mass (5). The storage mass is formed by a phase transition material which during heating and cooling can entirely or partly be made to change from the solid state to the liquid state or from the liquid state to the solid state.The conduits (3, 4) are formed by channels having a hydraulic diameter not greater than 3 mm.The apparatus according to the invention may advantageously be used in various heating systems. More particularly, the apparatus may be used in a heating system comprising a solar collector, in a space heating system, in a process for adapting heat requirement and heat emission to a process stream or for heating a motor vehicle with its engine switched off and/or a cold engine. The apparatus may also be used for heating a cold engine.