制育秧钵机设计英文资料

3.0 闻远设计 2024-02-04 19 4 47.5KB 8 页 10光币

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Low-cost wind power can provide a new wind turbine

Abstract: The first generation of commercial proliferation of enhanced wind

turbine (DAWT) in New Zealand has just begun trial operation two years, if the

developers to achieve the expected results, this new design of wind machines

to be significantly reduced cost of wind power.

New Zealand in the distance about 100 km Aokelannan the Waikaretu on

top of a hill, a revolutionary new wind turbine is a two-year trial operation. The

wind machines and the appearance of conventional wind turbine completely

different compared to its height of 17 m, much like a Juwu squatted on the

Peak, and the conventional wind turbine is a slender body, tall and towering

over the top of the hill.

This is put into operation the first generation of commercial proliferation of

enhanced wind turbine (DAWT: diffuser augmented wind turbine), if the

developers to achieve the expected results, will lead to significant reduction in

the cost of wind power. During the trial the new wind turbine technology, can

also test the proliferation of Central Cover new materials, high-strength fibers

to strengthen the steel reinforced concrete. Such wind turbine on the ground

referred to as "concrete wind turbine." In business, it is called Vortec7 of wind

machines, because it has a 7 m in diameter rotor.

Wind machines from nearly 100 small investors, set up a private company -

Vortec Energy Limited responsible for the design and construction, the

company raised 3.5 million U.S. dollars development of the prototype. Vortec

Energy Limited is currently being further raise about 700 million dollars to

build two sets of rotor diameter of 20 m of the unit. One of the new units will

be in areas of high wind speed test, probably in the vicinity of Wellington, New

Zealand, the average wind speed in another area. South Australia state

government said that the design has a lot of interest in Adelaide and will

speed up the installation of an average wind speed near the crew, because

the state government that is a rare wind of renewable energy, the need to

promote technical breakthroughs-state advantage of the more Lower average

wind speed resource development.

Two new type of rotor diameter of 20 m of the unit after the successful

operation, Vortec Energy Limited will consider the possibility of Nasdaq Stock

Exchange. Vortec7 unit performance data show that the rotor diameter of 20

m below the design to 0.031 U.S. dollars / kWh the price of Internet access, it

will enable New Zealand and wind power can compete existing power plants,

and other new methods of power generation compared to more Competitive.

If Vortec function of wind power generation in this price level, in the

development of wind power will rapidly become a powerful new force.

Vortec Energy Limited is the backing of entrepreneurs Robin Johannink, he

successfully operating a series of operations, but also Pacific Lithium (an

extract from seawater lithium companies) backing. Johannink, said Vortec

technology is an international product, but the technology in the New Zealand

stock market was on the recognition and attention is not too high, in this

difficult market. Therefore Vortec Energy Limited is considering the Nasdaq in

New York Stock Exchange listing is likely to achieve in 1999.

A proliferation of technology

U.S. aerospace giant Grumman Space Company (now Northrop Grumman

Corporation) spent eight years developing the proliferation of technology and

a proliferation of enhanced wind turbine technology patents. It was the spread

of a detailed analysis of fluid dynamics and the use of a 5 m in the wind tunnel

model confirmed the results. The proliferation of wind turbine rotor in the lower

reaches, and its role as a wing, the rear rotor in a low-voltage parts. This

"suction effect" effective in around the rotor speed multiplied. Conventional

wind turbine rotor can only be effective use of wind around 60 percent.

<Figure 01> show a pattern of proliferation.

The proliferation of economy is the key to the lowest cost to maximize the

size. Wind tunnel studies show that in 45-degree-proliferation structure, the

wall of surface wind flow may be two slot maintained by the jet. In the

prototype, the total size of the spread of further reduction, through the use of

general and exports in diameter than 30 percent of the arc structure, enhance

the hardness of Central enclosures. So that the design has been chosen to

receive the minimum amount of material the size of the greatest proliferation.

Vortec Energy Limited was awarded the Northrop Grumman Corporation

with the proliferation of technology for a period of 20 years of global patents

and 20 patents since the right to update the permit. Northrop Grumman

Corporation to retain their own internal use of the proliferation of technology

rather than enhance the commercial market for wind rights. Kenneth

Foreman, former Grumman Space research team leader, Vortec Energy

Corporation for technical advice, Vortec Energy Limited access to the

Grumman Space Research Group eight years on all the records, test reports

and patents.

2 materials technology

Grumman Space Research Group in the development of proliferation-

enhancing technologies in the face of a problem is that commercial-scale wind

turbine materials must have high strength and long life, low cost features.

Have aluminum, glass fiber, steel and reinforced concrete for the traditional

assessment and accounting, but the wind can not meet the requirements of

economic development. In all the assessment materials, the most desirable is

reinforced concrete, but the use of traditional reinforced concrete, the size of

the spread of the wind-rated output can only meet 70 kW. As small-scale units

can not enhance the diffusion of technology business development.

New Zealand in the use of reinforced concrete towers and the construction

of ocean-going boats such equipment has a long history. On this basis, the

structural engineer Alexander and Associates in 20 years has developed a

new product - high-strength fibers to strengthen the steel reinforced concrete.

This new material bending strength is three times the low-carbon steel,

basically do not need maintenance. This new material could be economic to

build the proliferation of larger, so that there is sufficient wind machines and

conventional wind turbine output of the competition.

Prototype rotor diameter of 7 m, height of 17 m, the highest output for 1

MW. Will be the construction of two units using the rotor diameter of 20 m,

high 52 m, and efforts to 3 MW.

The proliferation of the use of two-tier 3 m × 1m × 30mm of high-strength

steel fiber reinforced concrete slab of reinforced composite formed. First

laminate along the complex framework of the necessary two-way Wancheng

surface and fixed in place. The second laminate on top, bending, and then

filling in the foundation board surface two-way lock. Qu then these panels

bonded together, and the hardened edge of dealing with a proliferation of

segment. Complete assembly of the proliferation of good before the Academy

of Engineering, University of Auckland in the single-plate assembly and a

good segment of the spread of the stress test samples.

3 equipment balance

In addition to enhancing the proliferation of technology and materials

technology, wind machines are all conventional. Rotor equipped with a fixed

pitch of the four leaves, leaves for the welding of the steel structure, the

surface material for glass fiber. David Brown through a rotor speed gearbox or

a conventional driver's 1 200min-1, 400V of the ABB company's synchronous

generator, inverter generators running. Rotor, gearbox and generator (<Figure

02>) from the U.S. New World Power Company (New World Power) to

provide.

Frequency AC-DC rectifier first, and then the inverter for AC 50 Hz, the step-

up transformer into the local electricity company 11 kV power grid. Rectifier /

converter equipment from Auckland company Santon Technology Co., Ltd.

design and manufacture, the company battery chargers and speed drive

manufacturers have years of experience.

Taking into account the proliferation of size, needs a large and stable

foundation to prevent the wind loads and seismic, Lodging. Equipment was

installed to a large-diameter circular orbit, the wind machine can along its 360-

degree rotation, the rotating device on track with the wind control system for

electrical devices (<Figure 03>). This arrangement provides the foundation for

stability.

Because this type of wind turbine could avoid the proliferation of high winds

and a protective cover from the rotor impact on the ability of strong winds,

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摘要：

Low-costwindpowercanprovideanewwindturbineAbstract:Thefirstgenerationofcommercialproliferationofenhancedwindturbine(DAWT)inNewZealandhasjustbeguntrialoperationtwoyears,ifthedeveloperstoachievetheexpectedresults,thisnewdesignofwindmachinestobesignificantlyreducedcostofwindpower.NewZealandinthedistanc...

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