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Wednesday, November 4, 2009

Visit to ENERCON plant in Daman

It was amazing to see how 2.5 Tonne 23 metre long blade is manufactured in the plant. Made of composite material(resin), blade has three parts separately moulded- Spoiler,Middle and Root. Layers of matts are spread, bonded and heat treated to form these parts.Blade manufacturing is a complex activity.
Strength is achieved by 2 I sections.and continuous stran mesaurement transducers are provided forcondition monitoring during service.It takes 24 hours to make one complete blade, which is thenmounted on sleeve bearings of hub.
Rotor plant is seperateand eually exciting to see.60 pole shoe rotor generates 600V.Control boxes such as relay box, battery box and lubrication box were nicely placed. Generator weight 36 Tonnes.
Kudos to ENERCON for such well maintained plant.

Sunday, August 23, 2009

Installed capacity growing, generation not at par !

The total installed capacity worldwide is over 120 GigaWatts now. US, Germany and China , each are adding 5000 MW every year.Europe is still number one followed by US and Asia in terms of total installed capacity.
This huge capacity of 120 GW can produce over 250 Terawatthours(TWh)in a year. Theoritically so.
THe avrage PLF in India is just 15%. Global average PLF is 30 %. Why so? We have incentives for installing,not for generation.

Friday, June 12, 2009

Visit to largest windfarm of Asia




Loacated in the Nandurbar district of Khandesh in Maharashtra, this is the largest windfarm of Asia with an installed capacity of over 650 MW. The machines are of 1.25 MW and 1.5 MW class. Now Machines of 2.1 MW are being installed too. See our snap with the energetic team of Suzlon.Presently struggling with the politically motivated land deal probe by CID and rampant theft in the farm, this place has a great windspeed throughout the year.

Friday, May 29, 2009

How much energy turbines return ?

The data for energy return on energy invested is as follows:-

Coal fired power plant :- 2.5
Nuclear power :- 4.5
Hydroelectric power :- 10.0
Wind power :- 35.0
Natural Gas :- 10.3

Sunday, May 10, 2009

To beat Recession,expedite wind projects

Winfarms to ward off recession ? Yes thats what I am trying to say. If a 200 KW Wind Turbine replaces a thermal plant, it saves 150 Tonnes of coal. Coal, which invloves logistics problem and has increasing scarcity value. In addition it will save 3T SOx, 2T NOx and 500T CO2 emmission.
And India still has 25 % peak power shortage. Power which afftects industrial growth, rural electrification and economy in general.