Nuovo Pignone Tecnologie Srl

Davide Biliotti

Francesco Cangioli

Giuseppe Sassanelli

Giuseppe Iurisci

Massimiliano Ortiz Neri

Vittorio Michelassi

Paola Di Festa

Duccio Fioravanti

Alice Innocenti

Roberto Marchi

An integrated hermetically sealed turboexpander-generator comprises a hermetically sealed casing arrangement, a turboexpander, a compressor and an electric generator, arranged in the hermetically sealed casing arrangement along a common shaft line, supported by active magnetic bearings. Also disclosed is a thermodynamic system using the integrated hermetically sealed turboexpander-generator to convert waste heat from a waste heat source into electric power. The electric generator is arranged at one end of the common shaft line.

Integrated hermetically sealed turboexpander-generator with an electric generator at an end of a common shaft line

An integrated hermetically sealed turboexpander-generator comprises a hermetically sealed casing arrangement, a turboexpander, a compressor and an electric generator, arranged in the hermetically sealed casing arrangement along a common shaft line, supported by active magnetic bearings. Also disclosed is a thermodynamic system using the integrated hermetically sealed turboexpander-generator to convert waste heat from a waste heat source into electric power. One of the turboexpander and of the compressor comprises two sections arranged in an overhung configuration at the ends of the common shaft line.

Integrated hermetically sealed turboexpander-generator with overhung turbomachine

The combined radial-axial turboexpander () comprises a casing () and a shaft () arranged in the casing () for rotation therein. A radial impeller () and an axial expansion wheel () are mounted on the shaft (). The axial expansion wheel () is arranged downstream of the radial impeller (). A working fluid expands sequentially in the radial impeller and in the axial expansion wheel.

Radial&#x2014;axial turboexpander

A multi-stage turboexpander and a method for generating mechanical power therewith are disclosed. The multi-stage turboexpander includes a casing and a shaft, arranged for rotation in the casing. The shaft is supported by a first bearing at a first shaft end portion and a second bearing at a second shaft end portion. A first radial impeller and a second radial impeller are arranged between the first bearing and the second bearing on the shaft for co-rotation therewith around a rotation axis.

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Florence, Italy

Davide Biliotti