Patent ID: 8671678

Claim:
An energy system operable to generate mechanical energy, said energy system comprising a cluster of elongated energy cells, arranged parallel to each other in their longitudinal direction in a cylinder block in such a way as to optimize the volume of said cylinder block, each energy cell being operable to generate mechanical energy when a phase change material (PCM) changes from solid phase to liquid phase, said energy cell comprising a housing holding said phase change material (PCM), an insulator arranged between said housing , and said phase change material (PCM), and a heat exchanger encompassed by said phase change material (PCM), and comprising a heat transfer media, said heat exchanger having an inner surface provided with a number of inner flanges, and an outer surface provided with a number of outer flanges, said inner flanges being encompassed by said heat transfer media, and said outer flanges being encompassed by said phase change material (PCM), and said energy cell also comprising a movable member arranged in connection to, and being affected by said phase change material (PCM), said energy system also comprising a cylinder head and a cylinder bottom , said cylinder head being connected to said cylinder block, and comprising a space arranged in connection to said movable member for each energy cell, and comprising a working fluid contained in connection to, and being affected by said movable member, and wherein said cylinder bottom is connected to said cylinder block opposite to said cylinder head, and comprising tubular members operable to transport said heat transfer media, wherein each of said tubular members is a first tubular member for each energy cell, and wherein said cylinder head also comprises a second tubular member for each energy cell each first and second tubular member being arranged in relation to said energy cell in such a way that said heat transfer media flows through said first tubular member to said heat exchanger, and back through said second tubular member, or through said second tubular member to said heat exchanger, and back through said first tubular member, and wherein said cylinder head also comprises a first container for hot transfer media, and a second container for cold heat transfer media, each said second tubular member being connected to a valve integrated in said cylinder head, each said second tubular member after said valve being connected to a first duct connected to said first container and to a second duct connected to said second container, said first container being connected to a first connector, and said second container being connected, via a first duct, to a second connector, each valve being located in connection to an energy cell, and operable to switch between hot and cold heat transfer media, said cylinder head also comprising a second duct connected to said space, and to a common duct, which, in turn, is connected to a third connector, said first to third connectors being located outside said cylinder head.