12

To use a rotor as a series expander it is required to have control valves in the two
valleys of the trochoid, in addition to two exhaust ports. In addition, it is
necessary to adjust the volume displaced by the second rotor. On the other hand there
are large thermal losses, nonexistent in a turbine. To this the mechanical losses are
added. A turbine, on the other hand, is a flexible device capable of expanding gases
completely, with high gasodynamic efficiency and minimal thermal and mechanical
losses. In addition, it is a more compact device.


In a turbocompound, the perispheric ports prevent effectively separating the intake
manifold from the exhaust manifold. This makes it impossible to work with large
pressure differences between both ducts, necessary for the implementation of an
efficient turbocompound; where the pressure of the exhaust manifold is several times
the pressure of the intake manifold. The operation would occur with continuous
expansions of Joule-Thomson, with the corresponding generation of entropy and
destruction of useful work.
Gretings from Argentina.
Lisandro Rodríguez

Since we got 650 HP out of a 200 pound two rotor throwing away a lot of the exhaust
energy
the turbine type turbo compound would be much  lighter in weight.

Paul Lamar

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