Abstract:
PROBLEM TO BE SOLVED: To provide a heat transfer sheet useful in a rotary regenerative heat exchanger.SOLUTION: A heat transfer sheet for a rotary regenerative heat exchanger comprises: a plurality of sheet spacing members extending along the heat transfer sheet substantially parallel to a direction of a gas flow and defining a portion of a flow passage between two adjacent heat transfer sheets; and undulating surfaces disposed between sheet spacing members adjacent to each other and formed by lobes that become increasingly angled with respect to the sheet spacing members over the length of the heat transfer sheet.
Abstract:
PROBLEM TO BE SOLVED: To provide a roller with geometrical characteristics that is more economical, easily manufactured and less time consuming in manufacture than machined rollers.SOLUTION: A roller 100 for forming heat transfer elements includes a central shaft 110 and a plurality of roller elements 120. Each roller element 120 has a geometrical characteristic formed along an outer periphery thereof. The roller elements 120 are cut from metallic sheets by a method such as laser cutting. The roller elements 120 stacked on the central shaft 110 configure the roller 100 with a circumferential surface 150 corresponding to the geometrical characteristic of the stacked roller elements 120.
Abstract:
PROBLEM TO BE SOLVED: To operate a combined cycle power plant equipped with a gas turbine and a steam turbine at a minimum load without producing electric power which is supplied to an electric power system.SOLUTION: A gas turbine 2 is reduced in load to a condition where a compressor 3 is operated at its nominal speed, a steam turbine 12 is reduced in load in coordination with the load reduction of the gas turbine 2 to a condition where the total load exported by a plant 1 to an electric power system 21 is substantially equal to zero, and both the gas turbine 2 and a steam power generation system 10 are connected.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for overcoming disadvantages in an additive manufacturing process such as selective laser melting (SLM).SOLUTION: The invention refers to a method for manufacturing a hybrid component (11) comprising the steps of a) manufacturing a preform (2) as a first part of the hybrid component (11), then b) successively building up on that preform (2) a second part of the component (11) from a metallic powder material (12) by means of an additive manufacturing process by scanning with an energy beam (14), thereby c) establishing a controlled grain orientation in primary and secondary directions of at least a part of the second part of the component (11), d) wherein the controlled secondary grain orientation is realized by applying a specific scanning pattern of the energy beam (14), which is aligned to the cross section profile of the component (11) or to the local load conditions for the component (11).
Abstract:
PROBLEM TO BE SOLVED: To provide a near-wall cooling system for a damping device of a gas turbine combustor with significantly reduced cooling air mass flow requirements.SOLUTION: An end plate 10 separating a damping volume 9 from a combustion chamber 3 is fixed to an inner wall 5. The end plate 10 is provided with a neck passage 13, and additionally provided with at least one feed plenum 12, 15 for a cooling medium, at least one exit plenum 16 for the cooling medium, and at least one cooling passage 14 enabling a flow of the cooling medium from at least one first feed plenum 12 to a second feed plenum 15 or to the at least one exit plenum 16.
Abstract:
PROBLEM TO BE SOLVED: To improve cooling efficiency, lifetime and assembly and disassembly of an impingement-cooled hot gas segment arrangement.SOLUTION: A hot gas segment arrangement includes a hot gas segment, which is removably mounted on a carrier and is subjected at its outside to hot gas and impingement-cooled at its inside. An impingement plate with a plurality of distributed impingement holes is arranged at a distance inside the hot gas segment. Cooling air supply means is provided for loading the impingement plate with pressurized cooling air in order to generate through the impingement holes jets of cooling air, which impinge on the inside of the hot gas segment. The impingement plate is part of a closed receptacle which is supplied with the pressurized cooling air, and the receptacle with the impingement plate is mounted on the carrier independently of the hot gas segment.
Abstract:
PROBLEM TO BE SOLVED: To reduce or avoid limitations in design of downstream components, such as combustion chamber and turbine components, when utilizing a limited burner exit area.SOLUTION: A reheat burner arrangement includes a center body, an annular duct with a prescribed cross-section area, and an intermediate fuel injection plane located along the center body and actively connected to the cross section area of the annular duct. The center body is located upstream of a combustion chamber. The structure of the reheat burner arrangement is defined by various different parameters, and the structure of the reheat burner arrangement is defined by various interrelations.