Dresser-rand Company

Siemens Energy, Inc.

Jason M Kerth

George M Lucas

Joseph T Williams

James Jeffrey Moore

Kevin Michael Hoopes

Daniel L Ohart

Stephen Samuel Rashid

Patrice Bardon

Sukchul Kang

Greg Yonker

Stefan David Cich

Daniel Ohart

Stephen S Rashid

A pumped heat energy storage (PHES) system, involving an annular ducting arrangement is provided. Disclosed embodiments are believed to resolve the issue of containing a high temperature working fluid at elevated pressure by appropriately compartmentalizing by way of the annular ducting arrangement the functions of temperature management and pressure containment in a cost-effective and reliable manner.

Pumped heat energy storage system with annular ducting arrangement

A pumped heat energy storage system () is provided. A thermodynamic charging assembly (') may be configured to compress a working fluid and generate thermal energy. A thermal storage assembly () is coupled to charging assembly to store at atmospheric pressure by way of a conveyable bulk solid thermal storage media thermal energy generated by the charging assembly. A thermodynamic discharging assembly (&#x2033;) is coupled to the thermal storage assembly to extract thermal energy from the thermal storage assembly and convert extracted thermal energy to electrical energy. A heat exchanger assembly () is coupled to the thermal storage assembly. The heat exchanger assembly is arranged to directly thermally couple the conveyable bulk solid thermal storage media that is conveyed to the heat exchanger assembly with a flow of the working fluid that passes through the heat exchanger assembly. Disclosed embodiments can make use of immersed-particle heat exchanger technology and can offer similar roundtrip efficiency and pressure ratio characteristics comparable to those of a recuperated cycle without involving a recuperator and concomitant piping.

Pumped heat energy storage system with convey able solid thermal storage media directly thermally coupled to working fluid

Systems and methods for cooling one or more components of a gas turbine are provided. One system may include an expansion device and one or more conduits. The expansion device may be operatively coupled to the gas turbine and configured to convert a pressure drop of a stream of compressed process fluid to mechanical energy. The expansion device may be further configured to at least partially drive the gas turbine with the mechanical energy. The one or more conduits may fluidly couple the expansion device and the gas turbine. The one or more conduits may be configured to direct an expanded stream of the compressed process fluid to the one or more components of the gas turbine to cool the one or more components.

Systems and methods for cooling components of a gas turbine

A pumped heat energy storage (PHES) system () including a charging circuit and a discharging circuit effective to balance or split a total heat rejection of the PHES system between the charging circuit and the discharging circuit. The charging circuit may include thermal storage vessels () to store thermal energy generated from a first compressor (). A first heat rejection system () is fluidly coupled with the thermal storage vessels to remove thermal energy from the charging circuit. The discharging circuit may include a first turbine () fluidly coupled with the thermal storage vessels to extract thermal energy stored in the thermal storage vessels and convert the thermal energy to mechanical energy via an expansion of a second working fluid. A second heat rejection system () is fluidly coupled with the thermal storage vessels and the first turbine to remove thermal energy from the discharging circuit.

Pumped heat energy storage system

An internally-cooled diaphragm for an internally-cooled compressor is provided. The internally-cooled diaphragm may include an annular body configured to cool a process fluid flowing through a fluid pathway of the internally-cooled compressor. The annular body may define a return channel of the fluid pathway, and a cooling pathway in thermal communication with the fluid pathway. The return channel may be configured to at least partially diffuse and de-swirl the process fluid flowing therethrough, and the cooling pathway may be configured to receive a coolant to absorb heat from the process fluid flowing through the return channel.

Internally-cooled compressor diaphragm

An internally-cooled compressor is provided including a casing and a diaphragm disposed in the casing. The diaphragm includes a diaphragm box defining a plurality of box channels and a bulb defining a plurality of bulb channels. A plurality of return channel vanes connect the diaphragm box and bulb in fluid communication, such that each return channel vane defines a plurality of return vane conduits coupled in fluid communication with the plurality of box channels and the plurality of bulb channels thereby forming a section of a cooling pathway. The cooling pathway is configured such that a cooling agent introduced from an external coolant source into the diaphragm box and flowing through a box channel flows through a return vane conduit into and through a bulb channel and back through another return vane conduit into another box channel before flowing back to the external coolant source.

Method of construction for internally cooled diaphragms for centrifugal compressor

A system and method for producing liquefied natural gas from a natural gas source is provided. The method may include feeding natural gas provided by the natural gas source to a liquefaction module. The method may also include flowing the natural gas through a product stream of the liquefaction module. The method may further include flowing a process fluid through a liquefaction stream of the liquefaction module to cool at least a portion of the natural gas flowing through the product stream to produce the liquefied natural gas.

System and method for liquefied natural gas production

A pumped heat energy storage system is provided. The pumped heat energy storage system may include a charging assembly configured to compress a working fluid and generate thermal energy. The pumped heat energy storage system may also include a thermal storage assembly operably coupled with the charging assembly and configured to store the thermal energy generated from the charging assembly. The pumped heat energy storage system may further include a discharging assembly operably coupled with the thermal storage assembly and configured to extract the thermal energy from the thermal storage assembly and convert the thermal energy to electrical energy.

Pumped heat energy storage system using a conveyable solid thermal storage media

A method for operating a compressed air energy storage system is provided. The method can include compressing a process gas with a compressor train to produce a compressed process gas and storing the compressed process gas in a compressed gas storage unit. The method can also include extracting the compressed process gas from the compressed gas storage unit to an expansion assembly through a feed line. A valve assembly fluidly coupled to the feed line can be actuated to control a mass flow of the compressed process gas from the compressed gas storage unit to the expansion assembly. The method can further include heating the compressed process gas in a preheater fluidly coupled to the feed line upstream from the expansion assembly, and generating a power output with the expansion assembly.

Dual reheat topping cycle for improved energy efficiency for compressed air energy storage plants with high air storage pressure

An integral compressor-expander assembly, including a cryogenic expander positioned in an overhung configuration on a central shaft; a multi-stage centrifugal compressor supported on the central shaft between at least two bearings; and a device coupled to the central shaft and configured to either supply rotational power to the central shaft or generate power from rotation of the central shaft, depending upon a current operational mode of the multi-stage compressor.

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Houston, TX, United States of America

Jason M Kerth