In a rotary piston machine with an inner housing and rotors, the axes of the rotors are disposed at an angle to one another in order to equalize manufacturing tolerances and to reduce gap losses of such machines. The network device includes one or more input ports for receiving data packets to be routed, as well as one or more output ports for transmitting data packets. The invention also provides a molecular mixing unit comprising an outer body defining a mixing zone; a shear means to provide shear liquid in said mixing zone; at least one fluid inlet means for a first liquid; at least one fluid inlet means for a second liquid and a fluid outlet means. The mobile device transmits a first signal to the first transceiver on the at least one of a plurality of channels. A circuit using capacitors of suitable specification can also be provided to isolate the controlling pin of a power component in the form of an SCR to thereby avoid failure and damage of the entire system. The material mixtures are produced by mixing phase change material and expanded graphite as powders or in molten form, and shaping the mixtures into shaped bodies.