1 - Introduction

This homepage introduces the presentation of a new variable volume machine called TURBIVO, a shortened form of the French TURBIne VOlumétrique, a variable volume turbine.

The choice of that name is justified in the « Technology » section.

Turbivo operates without friction in the work volume and supports:

- low, medium and high pressures;

- low, medium and high temperatures.

The Turbivo is a sealed machine which operates without internal lubrication.

Depending on the structure of the added components, the Turbivo can generally be used in for:

- gas pumps or compressors: air, oxygen, nitrogen, town gas, methane, propane, chemicals;

- pumps for non-charged liquids: water, oil, wine, alcohol, petrol, fuel oil, diesel oil, petrol, chemicals, perfumes;

- hydraulic or compressed air machinery on building sites or quarries agricultural machinery, in the lifting gear fitted to certain lorries;

- external combustion heat engines: land, sea and air transport.

The Turbivo can also be used in assemblies of two or more, possibly different-sized, Turbivos with a common shaft.

For instance:

- an assembly is made from two or more different sized Turbivos operating as a staged compressor;

- a group of two different capacity Turbivos, one operating as a compressor and the other as a pressure reducer in an external combustion engine unit. In this case, a separate combustion chamber and at least oneheat exchanger must be provided, plus the essential accessories.

As the Turbivo operates without friction in the work volume, mechanical losses are low to very low. They are limited to the friction generated in the shaft bearings and the distribution.

Heat engines work according to the Joule cycle and so they have no cooling or exhaust system.

The losses currently experienced in exhaust and cooling systems are therefore mainly converted into mechanical energy.

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