A combined heat and power (CHP) system. The CHP system including a combustion chamber with an air inlet and an exhaust. The combustion chamber configured to receive a hot secondary gas for combustion. A heat exchanger coupled to the particle separator receives mixed combustion gases and transfers heat to a secondary gas. The CHP system also includes a turbine configured to receive and compress a secondary gas and direct the compressed secondary gas to the heat exchanger, the turbine is also configured to receive a heated compressed secondary gas and expand it to generate work therefrom, the expanded heated secondary gas is also used for combustion and to regulate the temperature of the combustion gases entering the heat exchanger. A generator is connected to the drive shaft of the turbine and configured to generate electricity with the work generated therein.

A system and a method for producing fracturing fluid, comprising: receiving source fluid from one or more inlet manifolds of a single transport, driving a first pump mounted on the single transport to route the source fluid from the inlet manifolds into a hydration tank mounted on the single transport, driving a second pump mounted on the single transport to route hydrated fluid produced by the hydration tank to a blending tub mounted on the single transport, and discharging fracturing fluid produced by the blending tub to one or more outlet manifolds of the single transport.

A system and a method for producing fracturing fluid, comprising: receiving source fluid from one or more inlet manifolds of a single transport, driving a first pump mounted on the single transport to route the source fluid from the inlet manifolds into a hydration tank mounted on the single transport, driving a second pump mounted on the single transport to route hydrated fluid produced by the hydration tank to a blending tub mounted on the single transport, and discharging fracturing fluid produced by the blending tub to one or more outlet manifolds of the single transport.

Systems and methods for heating material through cogeneration of thermal and electrical energy can include a heat source and an electric generator configured to produce hot exhaust gas and electricity. One or more heating conduits can carry the hot exhaust gas to one or more bodies of material. The electric generator can at least partially power one or more electric heaters configured to reheat the hot exhaust gas after a portion of heat has been transferred from the hot exhaust gas to the one or more bodies of material.

An arrangement of electrical machines including: a variable reluctance rotor. The arrangement also including an annular array of stators; each stator configured to function, in conjunction with the rotor, as an electrical machine.

An arrangement of electrical machines including: a variable reluctance rotor. The arrangement also including an annular array of stators; each stator configured to function, in conjunction with the rotor, as an electrical machine.

A method for liquid air and gas energy storage (LAGES) which integrates the processes of liquid air energy storage (LAES) and regasification of liquefied natural gas (LNG) at the import terminal through the exchange of thermal energy between the streams of air and natural gas (NG) in their gaseous and liquid states and includes harnessing the LNG as an intermediate heat carrier between the air streams being regasified and liquefied, recovering a compression heat from air liquefier for LNG regasification and utilizing a cold thermal energy of liquid air being regasified for reliquefaction of a part of send-out NG stream with its return to LNG terminal.

A system and a method for producing fracturing fluid, comprising: receiving source fluid from one or more inlet manifolds of a single transport, driving a first pump mounted on the single transport to route the source fluid from the inlet manifolds into a hydration tank mounted on the single transport, driving a second pump mounted on the single transport to route hydrated fluid produced by the hydration tank to a blending tub mounted on the single transport, and discharging fracturing fluid produced by the blending tub to one or more outlet manifolds of the single transport.

Providing electric power distribution for fracturing operations comprising receiving, at a transport, electric power from a mobile source of electricity at a first voltage level and supplying, from the transport, the electric power to a fracturing pump transport at the first voltage level using only a first, single cable connection. The first voltage level falls within a range of 1,000 V to 35 kilovolts. The transport also supplies electric power to a second transport at the first voltage level using only a second, single cable connection.

A combined heat and power (CHP) system. The CHP system including a combustion chamber with an air inlet and an exhaust. The combustion chamber configured to receive a hot secondary gas for combustion. A heat exchanger coupled to the particle separator receives mixed combustion gases and transfers heat to a secondary gas. The CHP system also includes a turbine configured to receive and compress a secondary gas and direct the compressed secondary gas to the heat exchanger, the turbine is also configured to receive a heated compressed secondary gas and expand it to generate work therefrom, the expanded heated secondary gas is also used for combustion and to regulate the temperature of the combustion gases entering the heat exchanger. A generator is connected to the drive shaft of the turbine and configured to generate electricity with the work generated therein.