Energy recovery for high power pumping systems and methods using exhaust gas heat to generate thermoelectric power

A thermoelectric power generation system mounted to a high-power hydraulic fracturing generation assembly, the high-power hydraulic fracturing generation assembly including a hydraulic fracturing trailer assembly, a turbine engine mounted to the hydraulic fracturing trailer assembly, a reduction gear box connected to the turbine engine and mounted to the hydraulic fracturing assembly, a drive shaft connected to the reduction gear box and mounted to the hydraulic fracturing assembly, and a turbine engine exhaust diffuser section connected to the turbine engine and mounted to the hydraulic fracturing assembly, the thermoelectric power generation system comprising:

• a turbine engine exhaust stack assembly mounted to the hydraulic fracturing trailer assembly and connected to the turbine engine exhaust diffuser section;
• a set of thermo-electric generator (TEG) assemblies connected to the turbine engine exhaust stack assembly to generate electric power responsive to the turbine engine exhaust stack assembly;
• and
• a power storage and distribution source mounted to the hydraulic fracturing trailer assembly to store and distribute power generated from the set of TEG assemblies across the hydraulic fracturing trailer assembly.

A hydraulic fracturing power generation system comprising:

• a turbine engine;
• a turbine engine exhaust diffuser section connected to the turbine engine;
• and
• a thermoelectric power generation assembly including:
• (a) a turbine engine exhaust stack assembly connected to the turbine engine exhaust diffuser section,
• (b) a set of thermo-electric generator (TEG) sub-assemblies connected to the turbine engine exhaust stack assembly to generate electric power from exhaust gas expelled from the turbine engine, and
• (c) a power storage and distribution source to store and distribute power generated from the set of TEG sub-assemblies.

A method to generate thermoelectric power for a hydraulic fracturing trailer assembly having a high-power hydraulic fracturing generation assembly positioned thereon, the high-power hydraulic fracturing generation assembly including a high-power turbine engine, the method comprising:

• operating the high-power turbine engine of the high-power hydraulic fracturing generation assembly when adjacent a fracturing well site so as to produce exhaust gas therefrom;
• supplying the exhaust gas from the high-power turbine engine into a turbine engine exhaust stack assembly;
• and
• generating thermoelectric power from a set of thermoelectric generation (TEG) assemblies responsive to heat from the exhaust gas in the turbine engine exhaust stack assembly so as to supply power to a power storage and distribution source associated with the hydraulic fracturing trailer assembly.