Thermal Energy Storage System

A thermal energy storage system for storing thermal energy produced by a heat source and for supplying the thermal energy to a thermal load, the thermal energy storage system comprising:

• a working fluid configured to store the thermal energy and transfer the thermal energy between the heat source and the thermal load;
• a vessel configured to store the working fluid;
• the vessel having a first end, a second end, an interior region, and a floating piston located in the interior region to separate a hot portion of the working fluid towards the first end from a cold portion of the working fluid towards the second end;
• a first manifold configured to be thermally coupled to an output of the heat source and configured to be directly fluidly coupled to an input of the thermal load;
• and wherein the first manifold is fluidly coupled to the interior region proximate the first end of the vessel;
• a second manifold configured to be thermally coupled to an input of the heat source and configured to be directly fluidly coupled to an output of the thermal load;
• and wherein the second manifold is fluidly coupled to the interior region proximate the second end of the vessel;
• a controller configured to maintain the working fluid in a liquid state