Ssi Technologies, Inc.

Paolo Silvestri

Alberto Traverso

William T Cousins

Raffaele Antonio Spezia

Raffaele Spezia

Luca Larosa

Marco Ferrando

Stefano Barberis

Federico Reggio

Carlo Alberto Niccolini

In one embodiment, a method and a system for determining the operating state of a dynamic compressor that is mechanically connected to an electrical machine and that is equipped with a rotor that exchanges energy with a known fluid by rotating at a speed and with a driving mechanical torque, and in particular for determining the operating point of the dynamic compressor and the distance of the operating point from a surge limit curve, which delimits a stable operation zone from an unstable operation zone of the dynamic compressor.

System and method for compressor performance monitoring and surge detection

A reverse compression cycle machine includes an evaporator, a compressor and a condenser arranged in series along a path of a working fluid in the machine, further including a boundary layer turbine placed between the condenser and the evaporator. The turbine includes a set of power disks mounted on a shaft which rotates inside a volume of a rotor casing, an inlet opening for introducing a working fluid in a stator volume, a stator nozzle, which accelerates the flow in a direction that is tangential to the power disks, and a discharge of a working fluid. The rotor casing includes a drain of a liquid fraction of the working fluid from the peripheral part of the power disks in order to avoid its concentration in the peripheral part of the volume of the rotor casing.

Reverse cycle machine provided with a turbine

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Genoa, Italy

Paolo Silvestri