Embodiments of systems and methods for generating power in the vicinity of a drilling rig are disclosed. During a drilling operation, heat generated by drilling fluid flowing from a borehole, exhaust from an engine, and/or fluid from an engine's water (or other fluid) jacket, for example, may be utilized by corresponding heat exchangers to facilitate heat transfer to a working fluid. The heated working fluid may cause an ORC unit to generate electrical power.

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system.

Disclosed is a combined energy supply system of wind, photovoltaic, solar thermal power and medium-based heat storage, capable of storing the energy which would have been “abandoned wind” and “abandoned light” temporarily in the form of heat by medium-based energy storage. Heat is released during peaks in the power grid to generate power, which serves the function of adjusting the peaks in the power grid. With the medium-based energy storage, unstable photovoltaic electric energy can be converted into stable heat energy output when a relatively large fluctuation occurs in wind and photovoltaic power generation, and therefore the stable supply of energy sources can be guaranteed efficiently. Furthermore, a second heater can also be used for heating the low-temperature media outputted by a first medium tank (100), or a third heater is used for heating water in a heat exchanger (500), and therefore the energy storage of the medium or the heating efficiency of the heat exchanger is improved.

An apparatus for reducing windage loss of steam turbines according to an embodiment of the present disclosure is to reduce or minimize damage to a blade caused by a rise in temperature at an outlet stage of a high-pressure turbine.

An apparatus for reducing windage loss of steam turbines according to an embodiment of the present disclosure is to reduce or minimize damage to a blade caused by a rise in temperature at an outlet stage of a high-pressure turbine.

In the method for conversion with recovery of energy carriers in a cyclical process of a thermal engine, a first recirculation cycle is formed involving gas generator, device for converting kinetic and thermal energy into mechanical energy, hydrogenation reactor, and gas generator. Water is evaporated in steam boilers, and steam is fed into turbine for converting steam energy into mechanical energy. In this process, steam boilers are located in gas generator and in hydrogenation reactor. The steam is carried onward from conversion device into condenser, and a second recirculation cycle is formed. Atmospheric oxygen from an air bubble is supplied to gas generator. The air is cooled, and cooling operation is repeated, until a maximum residual water content in the air of 0.2 g/m3 is attained. Formed condensate is collected and used steam boilers. Invention makes it possible to simplify process of recovering carbon oxides formed in thermal engines.

In the method for conversion with recovery of energy carriers in a cyclical process of a thermal engine, a first recirculation cycle is formed involving gas generator, device for converting kinetic and thermal energy into mechanical energy, hydrogenation reactor, and gas generator. Water is evaporated in steam boilers, and steam is fed into turbine for converting steam energy into mechanical energy. In this process, steam boilers are located in gas generator and in hydrogenation reactor. The steam is carried onward from conversion device into condenser, and a second recirculation cycle is formed. Atmospheric oxygen from an air bubble is supplied to gas generator. The air is cooled, and cooling operation is repeated, until a maximum residual water content in the air of 0.2 g/m3 is attained. Formed condensate is collected and used steam boilers. Invention makes it possible to simplify process of recovering carbon oxides formed in thermal engines.

A CO.sub.2 power generation system includes a furnace to burn fuel, a turbine operated by a working fluid supplied thereto, the working fluid being heated by heat generated in the furnace, a recuperator exchanging heat with the working fluid passing through the turbine, a cooler to cool the working fluid passing through the recuperator, and a compressor to compress the working fluid passing through the cooler, wherein the working fluid passing through the compressor is circulated to the furnace, and the working fluid is supercritical CO.sub.2.

A CO.sub.2 power generation system includes a furnace to burn fuel, a turbine operated by a working fluid supplied thereto, the working fluid being heated by heat generated in the furnace, a recuperator exchanging heat with the working fluid passing through the turbine, a cooler to cool the working fluid passing through the recuperator, and a compressor to compress the working fluid passing through the cooler, wherein the working fluid passing through the compressor is circulated to the furnace, and the working fluid is supercritical CO.sub.2.

The present disclosure relates to systems and methods useful for power production. In particular, a power production cycle utilizing CO.sub.2 as a working fluid may be combined with a second cycle wherein a compressed CO.sub.2 stream from the power production cycle, which can be heated and expanded to produce additional power and to provide additional heating to the power production cycle.