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Results 256 to 270 of 2079
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21st December 2021, 07:19 PM #256
$600 million would buy an AWFUL lot of batteries!
or windmills. Or CAES. Or solar.
But no... the government back fossil fuels.
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21st December 2021, 07:46 PM #257
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21st December 2021, 07:54 PM #258
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21st December 2021, 07:56 PM #259
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21st December 2021, 09:06 PM #260
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21st December 2021, 11:12 PM #261
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22nd December 2021, 07:04 PM #262
It will be interesting to see if the unions will let it go ahead. About 15 years ago someone tried to build an open cycle gas peaking plant in, I think, Victoria. A lot of the equipment had been ordered & built, then the unions put a green ban on it. It was to be a fast start peaking plant, but the unions would only let it go ahead if it was a combined cycle plant, which takes a lot longer to start up, so the whole project was canned.
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22nd December 2021, 08:04 PM #263
WB
That set me thinking. Why would that be? Then I realised that 15 years ago the brown coal power stations of Victoria were in full swing. The Unions would have seen it as a threat to the revenue of existing stations and consequently their members. Since that time the extraordinarily dirty Hazelwood has been shut down and the writing is on the wall for Yallourn due to close in 2028 and even Loy Yang is tipped to close around 2030. Those dates, of course, are very flexible and will depend on the economic climate, but apparently some packages are already being offered to staff (probably selected groups and not across the board) to thin down the numbers. In that climate I doubt the unions would have much sway or even much inclination to wield a stick.
I suspect in any event it was something of a muscle flexing exercise all those years ago. You are quite right that the open cycle machines are quicker up to speed and full load, but I think the heat recovery versions can run without the boiler on the back so the GT component would be equally quick. I am not au fait with the GTs so if I have that wrong somebody please correct me. The associated low pressure boiler would take a lot longer to place in service. As soon as you have a boiler with tubes you also have restricted heat rates. The peaking plants need to be capable of starting and loading close to full load in around five minutes.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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22nd December 2021, 09:19 PM #264
That’s correct for the Condamine Power Station which has a pair of GT’s and a single steam turbine powered by Heat Recovery Steam Generators. The GT exhaust gasses can either go straight up their funnels or diverted through boilers first; but whereas the GT’s only take a few minutes to come up to power the steam turbine takes the best part of a day. At the moment the station is only being used to provide peak power, often only running for a few hours in the evenings so the steam system is under partial preservation and dehydration to prevent corrosion inside the boiler tubes. If it suddenly had to provide baseload it would take an additional two or three hours minimum to remove all the dehydration equipment and refill the boilers with feedwater.
While the GT’s can provide 44MW each; with both running and the HRSG’s online to drive the steam turbine the station gains another 57MW of generation capacity.Nothing succeeds like a budgie without a beak.
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22nd December 2021, 10:40 PM #265
Thanks Chief
I thought that was the case, but it is good to have confirmation.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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22nd December 2021, 11:31 PM #266
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couple of hours to come on line... wait till you come to an old coal clunker like ours that doesn't even have a turbine bypass valve.
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23rd December 2021, 01:23 AM #267
Turbine bypass valve!
Man, you need to upgrade to the Hydrodyne supercritical turbopump reciprocating system.
It DOESN'T even have a TBV, as it uses a unique and heinously clever arrangement of six hydrocoptic marzlevanes, fitted laterally to the ambifacient waneshaft.
Probably bolts right on.
See? Dead simple.
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23rd December 2021, 05:15 PM #268
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Just finished watching this. I've been following "Engineering with Rosie" for some time now, the latest one is about total costs (almost) for the four major ways we generate electricity in Australia. Rosie's background with regard to electricity generation, is as a wind turbine engineer. As far as I'm aware, she is Melbourne based.
I think I now understand more about the gas part of generation that we apparently need, in order to operate reasonably efficiently during the changeover period.
Renewables vs. Fossil Fuels: The True Cost of Energy - YouTube
Mick.
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23rd December 2021, 05:25 PM #269
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23rd December 2021, 08:02 PM #270
These new wind farm announcements are now daily --> BlueFloat plans three Australian offshore projects - reNews - Renewable Energy News
ANOTHER 4.3 GW of wind.
Optimark, that YT video was outstanding. Highly illuminating.
Once again, it clearly shows that utter insanity and contempt this federal government has towards the people. That stupid gas fired plant at Kurri Kurri is an absolute crime.
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