Abstract: A heat exchanger suitable to be used as a recuperator in a micro gas turbine including a stack of cells. Each of the cells includes a pair of mutually spaced-apart plates and layers including heat exchange elements arranged at the outer surfaces of the plates and between the plates. Each of the layers including heat exchange elements can include at least one discrete spatial component incorporating a number of elements. Both a supply header and a discharge header of the heat exchanger can be made of only two components at the position of the stack of cells. Compensating for heat expansion effects can be via a bellows-shaped pipe portion of a supply conduit.

Abstract: A fuel/air supply device including a fuel supply arrangement designed to convey fuel to a fuel outlet of the fuel/air supply device, a primary air supply arrangement designed to convey air to an air outlet of the fuel/air supply device, and a secondary air supply arrangement connecting the primary air supply arrangement to the fuel supply arrangement at a position upstream of a fuel compressor that is included in the fuel supply arrangement. The secondary air supply arrangement includes an air conduit that has a restricted portion for defining a relatively small air passage in the air conduit, and can be used for realizing a fuel/air mixture of low calorific value if so desired on the basis of a supply of air to the fuel without needing complex control measures.

Abstract: A surface burner for gas combustion has a burner surface which is fabricated by intertwining or interweaving an elongated flexible element across a distinct burner frame. This fabrication method can be best referred to as braiding, but also plaiting, lacing or another comparable method.

Abstract: A method for suppressing vibrations, the method having the steps of providing a first device having a first rotating shaft, and a second device having a second rotating shaft. The orbits of the first rotating shaft are measured are analyzed, and the misalignment and unbalance is determined. The first rotating shaft and the bearings are then displaced to eliminate vibrations.

Abstract: When the compressor is a multistage compressor, each compression space includes an inlet arranged in the vicinity of the center axis and an outlet arranged in the vicinity of the outer circumference of the turbine wheel, and there is a connecting conduit between the outlet of a first compressor stage and the inlet of a second compressor stage. The connecting conduit is delimited by a first wall of the space of the first compressor stage and a second wall of the space of the second compressor stage. Each wall can be a friction disk.

Abstract: A small scale apparatus for generating heat and power is presented which comprises a small rotary turbomachine, in such a manner that compression, heating and expansion of the working medium take place in a connected rotating component, with a diameter of less than 200 mm and which then has a rotational speed of higher than 50 000 revolutions per minute, the rotor completely or partially rotating in an atmosphere which is formed by the expanded gas or vapor. Additional characteristic features mentioned include a multistage compressor, intercooling of the working medium, recovery of residual heat (regeneration) from the expanded gases, external heating of the working medium and a procedure based on a two-phase substance as working medium.