A steam generator includes a shroud and an annular stepwise helical baffle extending along at least part of a length of the shroud. There is a riser located in a central region of the steam generator. The helical baffle is made up of at least one annuler sector of flat plates. The edges of the flat plates may be straight or corrugated.

Provided is an inexpensive and simple solar power system. A solar power system according to the present invention includes: a heat collection apparatus (2, 4); a steam turbine (5), a power generator (16); a superheated steam supply line which supplies the steam turbine with superheated steam generated by the heat collection apparatus; a water supply line which condenses the steam expelled from the steam turbine into water and supplies the condensed water to the heat collection apparatus; a heat storage device (8) which has a heat storage medium; a first line which branches from the superheated steam supply line and which supplies the heat storage device with the superheated steam flowing through the superheated steam supply line; a second line which branches from the water supply line and which supplies the heat storage device with the water flowing through the water supply line; and a third line which supplies the steam turbine with superheated steam generated by the heat storage device. The heat storage device stores the heat of the superheated steam which has flowed through the first line in the heat storage medium, and heats the water which has flowed through the second line with the heat storage medium to thereby generate the superheated steam.

A solar plant including a solar field for production of steam, a turbine using steam, and an excess steam storage and draw off system. The system includes a latent heat thermal storage module and a liquid displacement thermal storage module including a liquid volume and a steam blanket. The modules are connected together so that the steam produced passes through the steam blanket before passing through the latent heat module, condensing, to be injected in the liquid volume, the lower part of the liquid volume being connected to the solar field and to an outlet of the turbine to let in or return cold liquid. The liquid volume acts as a liquid displacement reservoir.

A back-up boiler system for a solar thermal power plant (201) for transferring solar energy into electricity, said back-up boiler system comprising a combustion chamber (70) and a convection section (80) in fluid connection with said combustion chamber (70), wherein in the convection section (80) at least a first heat exchanger (92) is provided for heating a molten salts mixture of the solar thermal power plant and a second heat exchanger (90) for pre-heating boiler feed water of the solar thermal power plant, wherein the back-up boiler system (25) is configured to allow selection between only providing heat to the first heat exchanger (92), only providing heat to the second heat exchanger (90) and providing heat to both heat exchangers (90, 92), preferably dependent on availability of solar radiation and/or dependent on demand of power generation. The invention also relates to a solar thermal power plant (201) for transferring solar energy into electricity and a method for operating a solar thermal power plant.

Disclosed is an energy storage and steam generation system, including an electrode steam boiler. One side of the electrode steam boiler is connected with a boiler deaerator through a pipeline. A pipeline A is arranged at the top of the electrode steam boiler. The pipeline A is connected with a steam superheater, and an outlet of the steam superheater is provided with an external steam supply outlet pipeline. A molten salt steam generation bypass pipeline and a pipeline B are arranged on the steam superheater. One end of the molten salt steam generation bypass pipeline is connected to the steam superheater. A low-temperature molten salt storage tank is connected to the pipeline B, and a high-temperature molten salt storage tank is connected to the low-temperature molten salt storage tank through a pipeline. The other end of the molten salt steam generation bypass pipeline is connected to the high-temperature molten salt storage tank. Meanwhile, a generation method is further disclosed. According to the present disclosure, electric energy is converted into heat energy to be stored in the molten salt, and then energy is released for external steam supply by means of a method for generating steam through heating by coupling the molten salt, thereby realizing large-scale heat storage, prolonging the life of a heating system, and improving the reliability.

An energy storage power plant for harvesting electric energy, and suitable for converting electric energy into thermal energy is provided. The thermal energy can be temporarily stored in at least two thermal stores until demanded and retrieved to increase the energy content of water in a water circuit upon demand. The power plant has the at least two thermal stores, each has at least one converting device that allows electric energy to be directly or indirectly converted into thermal energy, the thermal stores being thermally chargeable by temporarily storing thermal energy, wherein one thermal store is for storing sensible heat and one thermal store is for storing latent heat; and at least one energy generating unit operated using the water in the water circuit, the energy content of the water having been increased by the temporary storage of thermal energy, in order to generate electric energy when operated.

A solid electric thermal storage superheated steam output system is provided. Through a high-temperature air duct, a superheated steam heat exchanger, a saturated steam heat exchanger and a water preheating heat exchanger, heat exchange is performed under the drive of a variable-frequency fan to finally generate superheated steam for use of a heat consumer. The water preheating heat exchanger is connected to a preheating steam tank, heat generated after the superheated steam heat exchanger and the saturated steam heat exchanger exchange heat is used to generate low-temperature steam for thermal deoxygenation of a deaerator, while water flows into a deaerator water tank through an overflow pipe. A superheated steam unit is a structural combination including a steam drum as a core, sets of superheated steam heat exchangers, saturated steam heat exchangers, water preheating heat exchangers and corresponding accessories. An overall combined superheated steam system includes multiple superheated steam units.

A system for generating steam for industrial heat. The system may include a plurality of heat pump cycles in thermal communication with each other and in thermal communication with a steam generation cycle. The plurality of heat pump cycles may include first and second heat pump cycles. The first heat pump circulates a first a working fluid and includes a first heat exchanger. The second heat pump cycle circulates a second working fluid and includes a second heat exchanger. The first heat exchanger transfers heat from the first to the second working fluid. The second heat exchanger transfers heat to a third working fluid in the steam generation cycle.

A system for generating steam for industrial heat. The system may include a plurality of heat pump cycles in thermal communication with each other and in thermal communication with a steam generation cycle. The plurality of heat pump cycles may include first and second heat pump cycles. The first heat pump circulates a first a working fluid and includes a first heat exchanger. The second heat pump cycle circulates a second working fluid and includes a second heat exchanger. The first heat exchanger transfers heat from the first to the second working fluid. The second heat exchanger transfers heat to a third working fluid in the steam generation cycle.

Provided herein are methods and systems for generating industrial heat. The methods may comprise storing, by a thermal energy storage system, heat generated by one or more heat pump cycles as thermal energy in a thermal storage assemblage, and generating, by the thermal energy storage system, an output fluid flow of fluid that has absorbed heat from the heated thermal storage system.