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Engine Exhaust Heat Recovery with Quasiturbines
Offering Essential Efficiency Characteristics
March 25 2007 - By Carol Crom - 35 Pages
The energy components carried away by the exhaust, are
primarily results of incomplete combustion, incomplete expansion, sensible
heat, and latent heat of the water vapor created by burning of the hydrogen
component of fuel. This paper looks at the management of heat recovery energy
and power, which could reach the 25% range in steady driving and much more in
city driving (available energy increasing with decreased engine efficiency).
Brayton and Rankin Quasiturbine systems are described as the best possible
heat recovery techniques, which also could apply to geothermal, industrial
processes, solar, biomass combustion… and to nuclear heat as well. The
extremely compact and efficient Quasiturbine technology is needed to
accomplish these goals.
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The Saint-Hilaire Quasiturbine As The Basis
For
A Simultaneous Paradigm Shift in Vehicle Propulsion
Systems
December 15 2003 - By Myron D. Stokes - 15 Pages
Amidst myriad, and many times unsupportable, claims of
technological breakthroughs capable -- fuel cells being at the top of this
contention -- of inducing vehicular design and engineering paradigm shifts, we
have concluded that the Saint-Hilaire "Quasiturbine" may very well provide
impetus to retire the piston engine. It has served humanity for nearly two
centuries, and has earned its rest. eMOTION! REPORTS.com is providing a
comprehensive white paper that will perhaps allow you to reach the same
conclusion...
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A Six-Stroke, High-Efficiency Quasiturbine Concept
Engine
With Distinct, Thermally-Insulated
Compression and Expansion
Components
September 2005 - By George Marchetti and Gilles Saint-Hilaire
- 16 Pages
One of the most difficult challenges in engine
technology today is the urgent need to increase engine thermal efficiency.
This paper presents a Quasiturbine thermal management strategy in the
development of high-efficiency engines for the 21st century. In the concept
engine, high- octane fuels are preferred because higher engine efficiencies
can be attained with these fuels. Higher efficiencies mean less fuel
consumption and lower atmospheric emissions per unit of work produced by the
engine. While the concept engine only takes a step closer to the efficiency
principles of Beau de Rochas, it is readily feasible and constitutes the most
efficient alternative to the ideal efficiencies awaiting the development of
the Quasiturbine photo-detonation engine, in which compression pressure and
rapidity of ignition are maximized.
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Quasiturbine: Technical Discussion
Comparing the
Quasiturbine With Other Common Engines
October 2005 - By Carol Crom - 18 Pages
The Quasiturbine is a rotary engine which is much
different than the Wankel and other similar rotary engines. The four blade
chain-like deformable rotor provides additional degrees of freedom which
permit the pressure volume (PV) function to be optimized for thermodynamic
performance. Neither piston engines nor rotary engines like the Wankel can
achieve performance equal to that which can be achieved by the Quasiturbine of
the equivalent size. It should be recognized that because of physical and
practical constraints, the modern Otto cycle based engines deviate
significantly from the classic Otto cycle and the modern Diesel cycle based
engines deviate significantly from the classic Diesel cycle. Consequently, the
efficiency achievable with the conventional engine designs are much less. The
way the Quasiturbine circumvents many of the problem encountered with piston
and the Wankel engines is discussed.
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Using the Quasiturbine to
Regulate
Natural Gas Pipeline Pressure and
Flow-rate
September 2005 - By Harry
Valentine - 3 pages
During an earlier time, no suitable pressure-reduction energy recovery
engines were available to install at natural gas pipeline transfer points. New
positive-displacement rotary engines have recently been developed that have
little need for lubrication can be installed at pipeline transfer points that
involve a large flow-rate of gas as well as large drop in line pressure. These
engines could provide base-line electrical power for numerous large customers
of natural gas.
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