New type of hybrid engine turbine

[parfaitelumiere]

Yes, I just look at your site, and it has partially answered my questions: otto replace the system with another dynamic system to produce power.
I have that in mind for a long time: a group, a light storage current, an electric motor as close to the wheel.
I saw a great static concept of micro-motor, which uses quartz as a generator, following a micro-explosion.
But the quantity of energy produced is minimal, and the installation (series and parallel) and the power supply of such a concept would be a gas plant, suddenly I remain on the "engine" with alternator, remains to find a good engine, and a good alternator.
your concept octagonal piston approaches my idea, with two generators, one on each side.
I saw several things in the course of manufacture, among others a "revolutionary" alternator (I am wary anyway), I did not lean too much on it.
It would be necessary that the alternator has approximately the same functioning as the engine (rpm and torque) to produce a voltage and intensity roughly similar to the engine used, to transform as little as possible?

[Flytox]

Some "details" on the Capstone turbine and its "high speed" alternator.

http://www.energie-plus.com/news/fullstory.php/aid/1353

http://www.energie-plus.com/news/fullst ... LQUES_INST

ANTANES_TECHNOLOGIQUES.html
high kinetic ensures the frequency stability; friendly operation with environmental standards; reduced maintenance and long service life technology.

For powers less than 250 kW, it is possible today to directly couple the micro turbine to the generator, removing the intermediate gear speed. In this case, the solid rotor accepts a rotational speed greater than or equal to 56 000 rev / min and the alternator generates a high frequency voltage. The removal of the gearbox results in a significant reduction of the size and weight. For information, a 160 32 kW turbine weighs kg without reducing the weight of the alternator is reduced to 68 kg, giving a set of one hundred kilos. This set is a high-speed turbo generator. Studies on this type of machine, launched by France Telecom and led by 1996

CIAC, Microturbo and Auxilec, have validated the following techniques:
* the ferromagnetic rotor, without winding, supports peripheral speeds of 300 m / s;
* This rotor is excited by a single solenoid coil incorporated in the stator;
* The useful magnetic flux flows in the central portion, the right of the stator windings;
* The reversible alternator operation ensures the startup of the turbine;
* An outer shell ensures the mechanical rigidity of the stator and the evacuation of heat losses;
* The machine is cooled by oil circulating in a closed circuit from the

turbine.

When the rotor rotates at 56 000 rev / min, the alternator outputs a three-phase voltage at high frequency (1867 Hz) which is transformed into direct current by rectification. A converter must be implemented if the turbo generator must deliver an alternating voltage to 50 or 60 Hz. The same generator is applied to the launch of the turbine. During the launch phase, is applied simultaneously

a DC voltage across the inductor and an appropriate alternating voltage across the armature. For 160 kW turbine, the power taken from the terminals of the battery does not exceed 3 kW and starting is ensured within 55 seconds. The turbine operates normally natural gas or other fuel types, with a potential stock of LPG as required by regulation.

In France, the industrialization of micro turbines was delayed, but companies like Capstone Honeywell or Bowman already doing this serial equipment. Otherwise,

the rotor angular speed of the turbine decreases as the power of the machines

increases

THE REVOLUTION MICROTURBINES
In the shorter term, the real revolution will come from the miniaturization of turbines.

The development needs of the countries of Southeast Asia, Central and South America, Africa, Eastern Europe and the liberalization of national electricity markets around the world open up prospects that some consider grandiose for the distribution of small decentralized production facilities. When we say, small ", we mean generally less than 1 MW, but the lower limit can go very low, up to a few kW. We are then talking about 11 micro-cogeneration"; we imagine units at the foot of buildings and certain market studies, particularly Anglo-Saxon ones, dream of millions of installations.

Even if things do not go so far, it is nonetheless true that the small cogeneration or small decentralized electricity production has a bright future ahead of it ... at least and for the moment outside France ( see our introductory article). This is why we are witnessing the emergence, in many manufacturers, of small units in ready-to-use packages. The first to arrive are the engines.

The most famous example is the German city Rottweil where turning sixty cogeneration plants with outputs between 50 and 500 kWe, about half of which are 50 kW modules, and which are being tested for units to 5 15 Mr.

The engines however are demanding maintenance, the frequency and the cost is incompatible with the characteristics of potential users of micro-systems.

Everyone now seems to agree that the future of micro CHP depends on the development of small and micro gas turbines.

The aviation knows build such turbines, but with such performance requirements, including the ratio power / weight, their cost is too high for terrestrial cogeneration applications. One of the first manufacturers to overcome the obstacle is Volvo Aero Turbines with his VT600 model 600 kW, the price is comparable to that of an equivalent power engine. It is an axial turbine two stage and single shaft, equipped with a centrifugal compressor with a compression ratio of 8:1 and a reducing agent which reduces the rotation speed output to 1500 rev / min to produce 50 Hz with a conventional alternator.

This set is offered as a complete co-generation package. Volvo is clearly targeting the new small cogeneration markets: to its range, which included 4,4 and 2,6 MW turbines, it therefore added this 600 kW model in 1997 'while announcing that it was developing also a 100 kW turbine for vehicle propulsion and stationary cogeneration. This turbine will be fitted with an exhaust gas recuperator which will preheat the combustion air in order to obtain an electrical efficiency greater than 30%: this is the concept of "regenerative turbine".

This concept is adopted by all micro-turbine manufacturers. It makes it possible to reduce the inlet temperature within 1 ooooc as well as the compression ratio (around 3 to 3,5) To increase the reliability and lifetime of the turbine, while maintaining a satisfactory electrical performance.

This is the case, for example, of turbines developed by Allied Signal (50 kW) and by Capstone Turbine Corporation (24 kW): with respective inlet temperatures of 980 ° C and 885'C, exhaust temperatures of 250 ° C and the respective compression ratio 3,5 and 3,25, they both reach 26% electrical efficiency (% 29 expected in one year), for an investment cost announced 300 $ / kW. They are equipped with silent air bearings and a single tree on which are mounted the turbine, compressor and generator to reduce mechanical losses.

This is also the concept adopted for the 50 - 270 kWe range developed by NREC under the name PowerWorks as part of an R&D program supported by the American GRI (Gas Research Institute). It should be noted on this occasion that the GRI had already launched at the beginning of the 80s a research program with the objective of developing a small 50 kW turbine for cogeneration, but that this program, called Advanced Energy System, had been abandoned. because no one at the time had succeeded in lowering the cost of these small turbines sufficiently. The models developed by NREC have been designed for a lifespan of 80 hours, an MTBFO of 000 hours (Mean Time between Forced Outage) and an efficiency of 8%. The solution: a configuration with two turbines which reduces the mechanical efforts (see diagram opposite), an inlet temperature limited to 000 ° C, an exhaust temperature of 30 ° C, and a particularly efficient recuperator developed by NREC itself according to very demanding criteria of resistance to fatigue and thermal cycling. In addition, the dry combustion chamber limits NOx emissions to less than 870 ppmv under all operating conditions, a remarkable value even for a large turbine equipped with selective catalysis or water injection. NREC intends to offer packages adapted to the various classic uses of cogeneration: production of steam, supply of hot water, production of electricity, drive of rotating machines (pumps, compressors), production of cold by absorption. He built five prototypes responding to these various uses to test endurance. The first industrial demonstrations will take place next year and marketing is scheduled for year 2000.

The Japanese have entered the high performance track. The 11-year R&D program supported by NEDO aims to develop a 300 kW turbine in which the use of ceramic materials would support inlet temperatures of the order of 1 3500C to achieve a return of at least 42%.

This program comprises two distinct projects led by two industrial groups, one concerning a single shaft turbine ("CGT 301") led by lshikawajima-Harima Heavy Industries Co., the other a twin shaft turbine driven by Kawasaki Heavy Industries ("CGT 302"). All parts subjected to high temperatures are made of ceramic. In project 301 the ceramic blades are attached to a metal rotor, while in 302 the rotor is made entirely of ceramic.

In the last known tests, the CGT 301 1 2000C operated at a power of 186 kWe and a yield of 30%; CGT to 302 1 280 ° C with power kW 240 and 37% yield, both respecting the NOx emission below 13ppm. NEDO announced that 300 kW and 42% yield will be achieved before the end of 1999. The estimated cost is estimated at 150 000 Yen / kW for industrial and 250 market 000 yen / kW for the domestic market (100 Yen = about 4,6 F) and the potential market for these units 300 kW amounted to 15 000 to 16 000 from 2000 and 2010.

The temperatures in blue are more than fanciful ...

[Alain G]

The attempt to establish a turbine in a car is not new, here a turbine which dates back to 50 fact very effective for the time:


http://www.allpar.com/mopar/turbine.html (English)

With translation in french:

http://cf.babelfish.yahoo.com/translate ... l=Traduire

[chatelot16]

Gear: who said that the loss of 5%?

as always, it depends ...

ca especially depending on the number of tooth: with very large numbers of very small dent performance is as close to 100% we want, but these gears must be very large

if we want to lighter requires small number of tooth: pinion kind of demareur: ca rubs much and performance is poor

in a gear when the contact point is on the pitch diameter the friction is zero

[hic]

[...] Each time you pass a sprocket to another, you lose a minimum of 5% power. So it's a bad point for the TAG that turns intrinsically too fast. [...]

Uh ...
Are you sure of yourself on this one then?
It seemed to me that rather around 0.98-0.99 the performance of a transmission between two gears damn good?

If your 5% is correct, it would mean that in a gearbox, we already lost around 20% power?

Good evening ... Lumberjack small rivers energy gears ...

Mechanical is considered that a spur gear typically loses 5% of the power in friction.

Well lubricated without bubbling, with helical teeth, you can climb up to 98% beyond, it becomes false advertising.

On 10 L of gasoline 9 directly dissipated somewhere in the car, the remaining liter becomes kinetic energy, itself finally dissipated into the air pushed by the car ...

hi Remundo
for the near future,
exist without friction systems,
carbon, diamond and lubricated.
the procedé was orbited and used by a Japanese automaker.
goodbye Hic

[Remundo]

Moué I will.

A diamond gear, it would be a real gem

[Leo Maximus]

The attempt to establish a turbine in a car is not new, here a turbine which dates back to 50 fact very effective for the time:

http://www.allpar.com/mopar/turbine.html (English)

With translation in french:

http://cf.babelfish.yahoo.com/translate ... l=Traduire

Absolutely, this is not new! I remember the 24 1963 hours of Le Mans and the BRM / Rover turbine: http://www.rover.org.nz/pages/jet/jet5.htm And there was also Renault's "L'Etoile Filante" which used a Turboméca turbine. (L'Etoile Filante must always be at the Renault Pub): http://www.renault.com/fr/PassionSport/ ... lante.aspx .

To return to hybrid there was 70 years in the series hybrid Toyota to gas turbine:







Total weight 1000 kg, powered by electric motor at speeds 2, 120 Top speed km / h, the yield given to 75% (!).

http://jalopnik.com/382555/toyota-hybrid-circa-1977
http://japanesenostalgiccar.com/blog/20 ... 00-hybrid/

Still, Toyota has chosen the block F5, an ordinary 4 cylinder 1497 cm3 already manufactured in millions of copies for its first Prius. It's easy and it's cheap In addition it allowed comparisons of conso / releases with cars equipped with the same block (Tercel, Paseo, etc ...)

[chatelot16]

[...] Each time you pass a sprocket to another, you lose a minimum of 5% power. So it's a bad point for the TAG that turns intrinsically too fast. [...]

Uh ...
Are you sure of yourself on this one then?
It seemed to me that rather around 0.98-0.99 the performance of a transmission between two gears damn good?

If your 5% is correct, it would mean that in a gearbox, we already lost around 20% power?

Good evening ... Lumberjack small rivers energy gears ...

Mechanical is considered that a spur gear typically loses 5% of the power in friction.

Well lubricated without bubbling, with helical teeth, you can climb up to 98% beyond, it becomes false advertising.

On 10 L of gasoline 9 directly dissipated somewhere in the car, the remaining liter becomes kinetic energy, itself finally dissipated into the air pushed by the car ...

hi Remundo
for the near future,
exist without friction systems,
carbon, diamond and lubricated.
the procedé was orbited and used by a Japanese automaker.
goodbye Hic

an ordinary gear steel or wood is already without friction when the contact point is the pitch diameter: it will run when the contact point deviates a bit and ca Frôté a bit, but the solution is simple: the more tooth are smaller and more numerous the gap with the pitch diameter and the less rub ca

[oiseautempete]

Some "details" on the Capstone turbine and its "high speed" alternator.

http://www.energie-plus.com/news/fullstory.php/aid/1353

http://www.energie-plus.com/news/fullst ... LQUES_INST



The temperatures in blue are more than fanciful ...

The t ° in blue are visibly entry errors: there is just one "0" too many, see the correspondence with the t ° just below at
"1 ° C" ... or 280 ° C in writing from "home" it is undoubtedly a document of North American origin, because in Europe we do not write numbers with a space or a point, nor "C" without "°" ... but in the USA and Canada if ...

[Cuicui]

Curiosities: Paramotor glider and turbines.
http://www.youtube.com/watch?v=y7xm4YE7y24
http://www.youtube.com/watch?v=_AXuy2-YoQY