A waste heat recovery system in thermal communication with an exhaust conduit of an internal combustion engine of a vehicle includes a condenser. The condenser includes a working fluid conduit configured to connect to a working fluid loop of the waste heat recovery system and a coolant fluid conduit configured to connect to a coolant fluid loop used to cool the internal combustion engine of the vehicle. The coolant fluid conduit includes a coolant fluid inlet and a coolant fluid outlet. The waste heat recovery system also includes a coolant fluid bypass fluidly connected between the coolant fluid inlet and the coolant fluid outlet. The coolant fluid bypass includes a coolant fluid control valve configured to vary a portion of the volume of coolant fluid that flows through the coolant fluid bypass based on a temperature of a working fluid in the working fluid loop.

A power system for converting waste heat from exhaust gases of an internal combustion engine to electrical energy includes an aftertreatment assembly positioned within a first housing. The power system includes an evaporator assembly positioned within a second housing. The evaporator assembly is positioned directly adjacent the aftertreatment assembly. The evaporator assembly includes a first portion of a working fluid loop in thermal communication with a first length of an exhaust conduit that extends from the aftertreatment assembly into the second housing. The power system includes a power pack positioned longitudinally forward of the aftertreatment assembly. The power pack includes a tank, a condenser, a pump and an expander fluidly connected by a second portion of the working fluid loop. The second portion is fluidly connected to the first portion of the working fluid loop.

A power system for converting waste heat from exhaust gases of an internal combustion engine to electrical energy includes an aftertreatment assembly positioned within a first housing. The power system includes an evaporator assembly positioned within a second housing. The evaporator assembly is positioned directly adjacent the aftertreatment assembly. The evaporator assembly includes a first portion of a working fluid loop in thermal communication with a first length of an exhaust conduit that extends from the aftertreatment assembly into the second housing. The power system includes a power pack positioned longitudinally forward of the aftertreatment assembly. The power pack includes a tank, a condenser, a pump and an expander fluidly connected by a second portion of the working fluid loop. The second portion is fluidly connected to the first portion of the working fluid loop.

A power generation system comprising: a liquefied natural gas (LNG) regasification unit configured to perform a regasification process to regasify LNG supplied from an LNG source to produce natural gas, the regasification process producing cold energy; a gas turbine configured to combust the natural gas to output power, the combusting producing an exhaust gas; a thermal storage unit configured to store heat obtained from the exhaust gas; and a Stirling engine configured to output power, the Stirling engine having a hot end heated by the heat stored in the thermal storage unit and a cold end cooled by the cold energy from the regasification process.

A power system for converting waste heat from exhaust gases of an internal combustion engine to electrical energy includes an aftertreatment assembly positioned within a first housing. The power system also includes an evaporator assembly positioned within a second housing. The evaporator assembly is positioned directly adjacent the aftertreatment assembly. The evaporator assembly includes a first portion of a working fluid loop in thermal communication with a first length of an exhaust conduit that extends from the aftertreatment assembly into the second housing. The power system also includes a power pack positioned inside a third housing. The power pack is positioned directly adjacent the evaporator assembly opposite to the aftertreatment assembly. The power pack includes a tank, a condenser, a pump and an expander fluidly connected by a second portion of the working fluid loop. The second portion is fluidly connected to the first portion of the working fluid loop.

A system for conversion of energy in a residual gas generated in an industrial process. The system includes a combustion chamber having a fuel inlet configured to receive a flow of residual gas for combustion in the combustion chamber. The combustion chamber further includes an air inlet. The system also includes a Stirling engine configured to convert heat from the combustion chamber into mechanical energy, the Stirling engine having a heat exchanger, wherein at least a portion of the heat exchanger extends into the combustion chamber. The system further includes a residual gas duct arranged for transporting the residual gas at atmospheric or near atmospheric pressure and an air duct arranged for transporting air at atmospheric or near atmospheric pressure. The system further includes a gas diffusion chamber including a residual gas inlet through which the residual gas enters the gas diffusion chamber from the residual gas duct, and a residual gas outlet in fluid communication with the fuel inlet of the combustion chamber, wherein the residual gas is transported in a diffusion direction from the residual gas inlet to the residual gas outlet. The gas diffusion chamber has such a shape that the flow of residual gas at the fuel inlet is substantially laminar and has a symmetric velocity profile.

A radiant heat recovery heater includes U-shaped heat transfer tubes each including a first path and a second path arranged on a mounting section. The U-shaped heat transfer tubes are housed in a container fixed to the mounting section. The first paths and the second paths of the U-shaped heat transfer tubes are arranged on the mounting section at equal intervals with a pitch angle . The first paths are each arranged on the mounting section at a position offset from the pitch angle for the associated second path by a predetermined angle , so as not to completely overlap a projection of that second path, the projection extending from the container toward the center C of the container.

A system for electricity generation using heat contained in exhaust gas from a combustor (enclosed flare) to drive an external combustion Stirling cycle engine which directly drives at least one alternator or generator. A battery is connected to the alternator or generator through a divider circuit followed by a filter circuit. Electric power distribution circuits are electrically connected to output circuits of the alternators or generators for consumption of the electric power on-site, for sale to a commercial electric power distribution grid, or for any other desired uses.

A system for conversion of energy in a residual gas generated in an industrial process. The system includes a combustion chamber having a fuel inlet configured to receive a flow of residual gas for combustion in the combustion chamber. The combustion chamber further includes an air inlet. The system also includes a Stirling engine configured to convert heat from the combustion chamber into mechanical energy, the Stirling engine having a heat exchanger, wherein at least a portion of the heat exchanger extends into the combustion chamber. The system further includes a residual gas duct arranged for transporting the residual gas at atmospheric or near atmospheric pressure and an air duct arranged for transporting air at atmospheric or near atmospheric pressure. The system further includes a gas diffusion chamber including a residual gas inlet through which the residual gas enters the gas diffusion chamber from the residual gas duct, and a residual gas outlet in fluid communication with the fuel inlet of the combustion chamber, wherein the residual gas is transported in a diffusion direction from the residual gas inlet to the residual gas outlet. The gas diffusion chamber has such a shape that the flow of residual gas at the fuel inlet is substantially laminar and has a symmetric velocity profile.

Systems, methods, and vehicles for use with internal combustion engines comprising combustion chambers that produce exhaust gases that include a Stirling engine having a hot side and a cold side with the hot side being in thermal contact with exhaust gases produced by the internal combustion engine. The Stirling engine is configured to be powered by heat from the exhaust gases during operation of the internal combustion engine, and a compressor powered by the Stirling engine is configured to provide compressed air to combustion chambers of the internal combustion engine.