A system includes an engine having a crankshaft and an electric motor having a shaft, the shaft including a first end and a second end. The system further includes a power source in electrical communication with the electric motor, the power source configured to provide electrical power to the electric motor, a reduction drive coupled to the crankshaft and to the first end of the shaft of the electric motor, and a fan coupled to the second end of the shaft of the electric motor, wherein rotation of the shaft of the electric motor drives rotation of the fan.

A thermoelectric power generation device including: a heating unit having a heat medium passage in which a heat medium flows; a cooling unit having a cooling liquid passage in which a cooling liquid flows; a thermoelectric element having the heating unit and the cooling unit so as to generate power by utilizing a temperature difference between a condensation temperature of the heat medium and a temperature of the cooling liquid; a power generation output detection unit configured to detect a power generation output of the thermoelectric element; a heat medium pressure detection unit configured to detect a pressure of the heat medium; a storage unit for storing, in advance, a relationship between a power generation output of the thermoelectric element and the pressure of the heat medium; and an abnormality detection unit configured to detect an abnormality taking place in the thermoelectric power generation device.

Systems and methods are described for generating electricity from fluid produced from a subsurface formation. The disclosed systems and methods include generating electrical power using the energy content of fluids produced from the earth or hot fluids created during surface processing of the produced fluids. Specific systems and methods describe utilizing heat and pressure of oil, gas, or water to generate electrical power.

A system and method for filtering exhaust gases of a vehicle is disclosed, that are based on an exhaust filter assembly includes an enclosure having an inlet coupled with an end of an exhaust pipe to allow exhaust gases of the vehicle into the enclosure, a filter element fitted with the enclosure to adsorb gaseous particles, moisture, and unburned fuel mist particles of the exhaust gases, sensors to sense gaseous particles adsorbed on the filter element, and generate first signals based on the sensed gaseous particles; a control unit; and a communication unit. The control unit includes processors to: receive the generated first signals, and generate second signals based on the received first signals. The communication is configured to transmit the second signals to computing devices of users to notify the users. Thermoelectric generator is adapted to convert heat energy of the exhaust gases into electric power.

A thermoelectric power generation system includes a first flow path, along which a first fluid flows, a second flow path, along which a second fluid having a lower temperature than the first fluid flows, a thermoelectric module arranged between the first flow path and the second flow path, and a controller that switches between a power generation mode and a heating mode. In the power generation mode, the thermoelectric module is caused to generate electric power, based on a difference between a temperature of the first fluid and a temperature of the second fluid. In the heating mode, a first surface of the thermoelectric module is heated using the Peltier effect caused by supplying electric power to the thermoelectric module. A distance between the first surface and the first flow path is shorter than a distance between the first surface and the second flow path.

Turbine fracturing equipment is provided. The turbine fracturing equipment includes: a turbine engine, having an exhaust end configured to discharge exhaust gas; an exhaust pipe having a first end and a second end, the first end of the exhaust pipe being configured such that the exhaust gas discharged from the exhaust end of the turbine engine enters the exhaust pipe, and the second end of the exhaust pipe being configured to discharge the exhaust gas in the exhaust pipe; and an exhaust gas energy recovery device, the exhaust gas energy recovery device including a thermal energy recovery mechanism configured to recover thermal energy of the exhaust gas and a kinetic energy recovery mechanism configured to recover kinetic energy of the exhaust gas, at least a part of the thermal energy recovery mechanism and at least a part of the kinetic energy recovery mechanism are arranged in the exhaust pipe.

A heat recovery device includes: a honeycomb structure including an outer peripheral wall having at least one outer peripheral surface, and partition walls arranged on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells each extending from a first end face to a second end face to form a flow path for a first fluid; a thermoelectric conversion element arranged to face the outer peripheral surface of the outer peripheral wall; a cylindrical member that circumferentially covers the honeycomb structure in which the thermoelectric conversion element is arranged; a casing arranged at an interval so as to form a flow path for a second fluid, the casing being arrange on a radially outer side of the cylindrical member; and a pressing member being configured to press the cylindrical member against the thermoelectric conversion element. The cylindrical member has one or more slit portions.

A power generation apparatus according to an embodiment of the present invention comprises: a cooling unit, a thermoelectric module comprising a thermoelectric element disposed on one surface of the cooling unit, and a heat sink disposed on the thermoelectric element; a guide plate disposed opposite the thermoelectric module; and a branch unit disposed on another surface perpendicular to the one surface of the cooling unit. The heat sink includes multiple heat dissipation fins which are spaced apart from each other. The ratio of the shortest horizontal distance between the heat sink and the guide plate to the shortest horizontal distance between the branch unit and the guide plate is 0.0625 to 0.25.

The invention relates to an energy recovering assembly (1) and a method of providing the same for extraction of electric power. The assembly comprises a first array (2) of tubes (6) and a second array (3) of tubes (13). The tubes (6) of the first array (2) are interdigitated with the tubes (13) of the second array (3), such that two tubes (13) of the second array (3) are arranged between two successive tubes (6) of the first array (2), or such that two tubes (6) of the first array (2) are arranged between two successive tubes (13) of the second array (3). Thermo electric modules (4) are received in gaps (7) between adjacent tubes (6, 13) of the first (2) and second arrays (3). Fixation arrangements (5) are received in interspaces (X) between two tubes (6; 13). The fixation arrangements (5) are operable between a first state in which the fixation arrangement (5) is insertable in the associated interspace (X), and a second state in which the fixation arrangement (5) is adapted to exert a pressure on the two tubes (6; 13) in the associated interspace (X), forcing each of the two tubes (6; 13) towards the thermo electric modules (4) and towards the successive tubes (6; 13) adjacent the thermoelectric modules (4).

A thermoelectric generator includes a first channel for passing a warm fluid along a direction of flow, a second channel for passing a cold fluid, a plurality of thermocouple elements disposed along the direction of flow between the first and second channels, a first member includes portions disposed between the elements and the first channel and associated with the individual elements for providing a heat coupling between the associated element and the first channel, and a second member including portions disposed between the elements and the second channel and associated with the individual elements for providing a heat coupling between the associated element and the second channel. The sum of the thermal resistances of those portions that are associated with a first element positioned upstream of a second element is bigger than the sum of the thermal resistances of those portions that are associated with the second element.