Abstract:
A system provides a boiler (10) integrated with an oxygen producing device (12). Combustion heat generated in the boiler (10 is used to generate steam in the boiler and applied to at least one of a sweep gas stream (13) and a feed gas stream (15) to ensure sweep gas and feed gas streams (12, 15) are provided at the appropriate temperature to the oxygen producing device (12). Flue gas generated by fuel combustion within the combustion chamber (14) may be used as the sweep gas stream (13), in which case, the flue gas exiting the oxygen producing device (12) includes the oxygen removed from the feed gas stream. The flue gas/oxygen mixture may be used for fuel combustion within the combustion chamber, and may be provided to an oxygen separator (28) for removing oxygen from the flue gas. Sensible heat contained in the oxygen depleted feed gas from the oxygen producing device (12) may be recovered by the feed gas stream (15).
Abstract:
A solar power generation system includes a solar receiver disposed on a tower that receives radiant heat reflected from a field of solar collectors. The solar receiver includes an evaporator having a plurality of vertically oriented tubes to form a panel for receiving a fluid, such as water and/or steam, wherein the tubes have a rifled internal surface. The fluid within the tubes has a mass flow greater than 0.2x106 lb/hr/ft3 at a pressure in the range of 100-2850 psia, wherein radiant heat fluxes on the outside of the tubes exceed 185,00 btu/hr/ft2.
Abstract translation:太阳能发电系统包括设置在塔上的太阳能接收器,该太阳能接收器接收从太阳能收集器的场反射的辐射热。 太阳能接收器包括具有多个垂直取向的管的蒸发器,以形成用于接收诸如水和/或蒸汽的流体的面板,其中管具有膛线的内表面。 管中的流体在100-2850psia范围内的压力下具有大于0.2×10 16 lb / hr / ft 3的质量流量,其中管外侧的辐射热通量超过185,00btu / hr / ft 2。
Abstract:
A solar thermal power plant 10 includes a steam generation portion 12 and a turbine 30. The steam generation portion 12 includes a steam drum 50 that separates water and steam, and an evaporator 36 and super heater 38 in fluid communication with the steam drum. The evaporator 36 receives and heats a portion of a flow of water from the steam drum 50 to provide the steam using solar energy provided thereto. The super heater 38 heats the steam from the evaporator 36 to provide super heated steam. A turbine 30 receives the super heated steam from the steam generation portion 12 to rotate the turbine. A plurality of extraction stages 66 extracts steam from the turbine 30 and provides the steam to a plurality of feedwater heaters 68. The feedwater heaters 68 heat the feedwater provided by the turbine 30, wherein the heated feedwater is provided to the steam generation portion 12.
Abstract:
A standby heat supply system is provided for a solar receiver steam generator to maintain the system at a relatively constant temperature during the nocturnal period when solar radiation is unavailable. An exemplary solar steam generator having a standby heat supply system includes a steam loop having at least one solar panel, a steam drum and circulating pump, whereby solar energy heats the water to generate steam which is provided to the steam drum. The standby heat supply system includes an external standby heater wherein the water from the steam drum is provided to the external standby heater. A heat isolation valve is actuated during the nocturnal period to allow the water to circulate through the standby heater. Another exemplary embodiment of a solar steam generator includes an internal standby heat supply system having heater elements immersed in the steam drum for direct heating of the water during nocturnal periods.
Abstract:
A continuous moving bed solar steam generation and storage system is provided to generate steam for production processes after loss or reduction of received solar energy. The system includes a receiver 10 that receives a flowing stream of particulate material 30 that absorbs solar radiant energy 15 as it passes through beams of the energy 15 received from collectors 14. The heated stream of material 30 passes into a first chamber 40 to heat a tube bundle 42 therein. Heat from the particulate material 30 is transferred to the bundle 42, evaporating the water to generate, reheat (RH) and/or superheat (SH) steam 46. The cooled material 30 passes to a second chamber 60. The material 30 is drained from the second chamber 60 and carried to a cyclone 80 in the receiver 10. The material 30 drains from the cyclone 80 to complete the flow cycle.
Abstract:
A continuous moving bed solar steam generation and storage system is provided to generate steam for production processes after loss or reduction of received solar energy. The system includes a receiver 10 that receives a flowing stream of particulate material 30 that absorbs solar radiant energy 15 as it passes through beams of the energy 15 received from collectors 14. The heated stream of material 30 passes into a first chamber 40 to heat a tube bundle 42 therein. Heat from the particulate material 30 is transferred to the bundle 42, evaporating the water to generate, reheat (RH) and/or superheat (SH) steam 46. The cooled material 30 passes to a second chamber 60. The material 30 is drained from the second chamber 60 and carried to a cyclone 80 in the receiver 10. The material 30 drains from the cyclone 80 to complete the flow cycle.