Steam generators in power plants exchange energy from a primary medium to a secondary medium for energy extraction. Steam generators include one or more primary conduits and one or more secondary conduits. The conduits do not intermix the mediums and may thus discriminate among different fluid sources and destinations. One conduit may boil feedwater while another reheats steam for use in lower and higher-pressure turbines, respectively. Valves and other selectors divert steam and/or water into the steam generator or to other turbines or the environment for load balancing and other operational characteristics. Conduits circulate around an interior perimeter of the steam generator immersed in the primary medium and may have different cross-sections, radii, and internal structures depending on contained. A water conduit may have less flow area and a tighter coil radius. A steam conduit may include a swirler and rivulet stopper to intermix water in any steam flow.

An apparatus and method for power generation during regasification, having a tank for a cryogenic fluid, a first pump connected to the tank via a first line, a first heat exchanger connected to the first pump via a second line, and a second heat exchanger connected downstream of the first heat exchanger, and a first turbine connected immediately downstream of the second heat exchanger, wherein a third line branches off from the first turbine and opens into the first heat exchanger, and a fourth line branches off from this first heat exchanger and opens into the second line, wherein a second pump is connected into the fourth line.

A combined heat recovery device includes a high pressure cylinder of a steam turbine; a main steam pipe; a final-stage steam extraction pipe; an additional pipe additionally provided on the main steam pipe; a heat exchanger taking main steam in the main steam pipe as a heat source; a feedwater heater taking discharged steam from the heat exchanger as a heat source; and a steam side regulating valve provided on the additional pipe, configured to regulate main steam in the additional pipe, and capable of controlling a pressure of extracted steam behind the steam side regulating valve to control an outlet temperature of the feedwater heater to reach a preset feedwater temperature.

The present application relates to an exhaust steam waste heat recovering and supplying system used for air-cooling units in large thermal power plants. Each of the two steam turbines has independent exhaust steam extraction system, and the exhaust steam extraction system of each steam turbine is connected with corresponding pre-condenser to heat the return water of the heating network. The exhaust steam extraction system of each steam turbine is further connected with the corresponding steam ejector; the exhaust port of each steam is connected with the corresponding steam ejector condenser to heat the return water of the heating network. The exhaust steam waste heat of the air-cooling units in a thermal power plant can be recycled in high efficiency to improve the utility rate of the exhaust steam, increase heating capacity, reduce cold end loss to the largest extent, and maximize the energy saving benefits.

An apparatus and method for power generation during regasification, having a tank for a cryogenic fluid, a first pump connected to the tank via a first line, a first heat exchanger connected to the first pump via a second line, and a second heat exchanger connected downstream of the first heat exchanger, and a first turbine connected immediately downstream of the second heat exchanger, wherein a third line branches off from the first turbine and opens into the first heat exchanger, and a fourth line branches off from this first heat exchanger and opens into the second line, wherein a second pump is connected into the fourth line.

The single working-medium vapor combined cycle and the vapor power device for combined cycle is provided in this invitation and belongs to the field of energy and power technology. The condenser connects the mixing evaporator by a condensate pipeline via the circulating pump and the preheater, the expander connects the mixing evaporator by a vapor channel via the middle-temperature evaporator, the mixing evaporator connects the compressor and the second expander by a vapor channel, the compressor connects the expander by a vapor channel via the high-temperature heat exchanger, the second expander connects the condenser by a vapor channel; the condenser connects the middle-temperature evaporator by a condensate pipeline via the second circulating pump and a second preheater, the middle-temperature evaporator connects the third expander and the condenser by a vapor channel; the high-temperature heat exchanger, the middle-temperature evaporator, the mixing evaporator, the preheater and the second preheater connects the external part by a working-medium channel of the heat source, the expander connects the compressor and transfers power, the expander, the second expander and the third expander connects the external part and output power, in summary, these above-mentioned equipment and pipelines build up the vapor power device for combined cycle.

The single working-medium vapor combined cycle and the vapor power device for combined cycle is provided in this invitation and belongs to the field of energy and power technology. The condenser connects the mixing evaporator by a condensate pipeline via the circulating pump and the preheater, the expander connects the mixing evaporator by a vapor channel via the middle-temperature evaporator, the mixing evaporator connects the compressor and the second expander by a vapor channel, the compressor connects the expander by a vapor channel via the high-temperature heat exchanger, the second expander connects the condenser by a vapor channel; the condenser connects the middle-temperature evaporator by a condensate pipeline via the second circulating pump and a second preheater, the middle-temperature evaporator connects the third expander and the condenser by a vapor channel; the high-temperature heat exchanger, the middle-temperature evaporator, the mixing evaporator, the preheater and the second preheater connects the external part by a working-medium channel of the heat source, the expander connects the compressor and transfers power, the expander, the second expander and the third expander connects the external part and output power, in summary, these above-mentioned equipment and pipelines build up the vapor power device for combined cycle.

Disclosed is a method for rapidly and flexibly adapting the output of a steam-turbine power station (1), preferably for adapting the output to altered network loads, more preferably for providing a positive and/or negative network operating reserve as required, and especially preferably for providing a primary operating reserve and/or a secondary operating reserve. According to the invention, heat released during the discharge of at least one electrically chargeable thermal store (6) is coupled into a feedwater heater section (3) of the power station (1).

Disclosed is a method for rapidly and flexibly adapting the output of a steam-turbine power station (1), preferably for adapting the output to altered network loads, more preferably for providing a positive and/or negative network operating reserve as required, and especially preferably for providing a primary operating reserve and/or a secondary operating reserve. According to the invention, heat released during the discharge of at least one electrically chargeable thermal store (6) is coupled into a feedwater heater section (3) of the power station (1).

Provided is an electric power generating system which exhibits favorable energy recovery efficiency compared to the prior art and, further, can generate not only cold heat but also warm heat. In an electric power generating system where working fluid is circulated in a system of a pressure resistant closed circuit while changing a state of the working fluid, power is generated by converting external heat energy given to the working fluid into kinetic energy, and electric power is generated by driving an electric power generator by the power, a pressure resistant closed circuit is formed of a main circuit and a sub circuit, the main circuit includes an evaporation chamber, an adiabatic expansion chamber, a power generating part, a warming-use heat exchange mechanism, and a liquefied working fluid return means, and the sub circuit includes a heating medium divided flow path, a liquefied auxiliary fluid supply path, a cooling equipment, a second-fluid-to-be-warmed supply path, a warming equipment, and a return flow compression means.