Name: |
mariah1
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Subject: |
Martin Dam
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Date:
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7/7/2013 2:48:54 PM
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They have had to open gates again. No wonder with all this rain.
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Name: |
Shortbus
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Subject: |
Martin Dam
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Date:
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7/8/2013 12:08:38 AM
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Is there a site where you can tell what the real time generation level is and spill gate status? Sure would be neat to have hourly graphs of the average basin rainfall, water level, generation, and spill gates.
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Name: |
spyke420
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Subject: |
Martin Dam
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Date:
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7/8/2013 9:55:35 PM
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Time for the after summer season draw down to begin!
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Name: |
GoneFishin
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Subject: |
Interesting Info On Martin Dam
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Date:
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7/8/2013 10:32:02 PM
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URL: Martin Dam
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Name: |
GoneFishin
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Subject: |
Additional Info On Release
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Date:
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7/8/2013 10:42:53 PM (updated 7/8/2013 10:49:38 PM)
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Go to site and hit on River Tallapoosa and Lake Martin. Will give you daily info on gates open. From the my previous post, look at Spillway and you will see a gate fully open releases 3 million gal per minute. Look at this site and it it shows gates open per hour. Based on 3 million per minute or 180 million per hour......3 open gates will release 540 million gal per hour. I think I go it right.
URL: Daily Gates
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Name: |
GoneFishin
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Subject: |
Total Volume Water
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Date:
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7/8/2013 11:05:49 PM (updated 7/8/2013 11:07:15 PM)
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The lake has a surface area of 39,000 acres and a volume of 1,622,000 acre feet. 1 acre foot has a volume of 326,000 gal water. I assume the total acre feet is at full pool and equates to a volume of 1,622,000 x 326,000= 528,772,000,000 gal.
I think I am right but then I voted for Obama and went to a government school.
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Name: |
Shortbus
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Subject: |
Numb3rs
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Date:
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7/8/2013 11:42:51 PM
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Current Lake Conditions
Date:
7/8/2013
Hour Ending:
10:16:00 PM
Lake Elevation
489.47
Feet
Turbine Release
11936
cfs
If the Turbine Release is 11936 cubic feet/sec, then it is also 338 cubic meters/sec. http://www.convertit.com/Go/ConvertIt/Measurement/Converter.ASP
Drop it into power calculator with 53 meters of head (guess) http://www.engineeringtoolbox.com/hydropower-d_1359.html
You get 158,163 KW or 158 MW
Dam Stats
AC GENERATORS
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Generator #1
Rating: 33 MW
Transfomer: ABB
Rotation: 120 RPM
Rotor Wt: 335k lbs.
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Generator #2
Rating: 33 MW
Transformer: Westing.
Rotation: 120 RPM
Rotor Wt: 335k lbs.
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Generator #3
Rating: 33 MW
Transformer: Westing.
Rotation: 120 RPM
Rotor Wt: 335k lbs.
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Generator #4
Rating: 55.2 MW
Transformer: GE
Rotation: 112.5 RPM
Rotor Wt: 593.1k lbs.
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HYDRAULIC TURBINES
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Turbine #1
Weight: 74,000 lbs.
Diameter: 156"
Horse Power: 45,000
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Turbine #2
Weight: 84,000 lbs.
Diameter: 150"
Horse Power: 45,000
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Turbine #3
Weight: 84,000 lbs.
Diemeter: 150"
Horse Power: 45,000
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Turbine #4
Weight: 118,000 lbs.
Diameter: 186"
Horse Power: 78,000 |
Add up all the watts you get 154.2 MW Got it to 97.6% first try.
URL: Hydropower calculator
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Name: |
HP HQ
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Subject: |
Numb3rs
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Date:
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7/9/2013 12:20:43 AM
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Volume would change radically based on depth right? A square acre at ten feet deep is no where near a square at 100 feet. So how would you estimate that variable?
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Name: |
Shortbus
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Subject: |
Numb3rs
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Date:
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7/9/2013 12:50:34 AM
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Density does not change much with depth, water is not compressible.
If you have a map, it will show bottom contours. Think of the letter U. Where there is dirt there is not water.
Essentially you are looking at the water in foot-at-a-time slices that fit the contour and adding up the volume.
Contour makes a difference in narrow sections like Chimney Rock. Accurate depth would be more important in wide sections like the fireworks area.
My 2 cents. Your mileage may vary.....................................
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Name: |
lakngulf
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Subject: |
Numb3rs
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Date:
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7/9/2013 7:36:00 AM
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Does all that mean that the water feels great when I jump in?
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Name: |
Summer Lover
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Subject: |
Numb3rs
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Date:
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7/9/2013 10:51:40 AM
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You need to get outside more often...
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Name: |
Shortbus
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Subject: |
Yet more inside Numb3rs
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Date:
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7/9/2013 1:05:16 PM
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Martin dam has 20 spillway gates that are 30 feet by 16 feet in dimension.
The gates are opened as needed in the following sequence:
5-11-3-9-7-1-10-6-12-8-4-2-20-19-18-17-16-15-13-14 (left to right in the picture).
The first 12 gates opened are above the basin.
The capacity of each gate is 3,016,000 gallons per minute (6,700 cfs).
6700 foot^3 189.7228721664 meter^3
----------- = ----------------------
second second
(volume flow rate)
Each gate will flow 190 cubic meters/sec Guess 50 meters of head You get spillway loss of 83,876 kw or 84 MW per gate All 20 gates would be 1677 MW
Total generation is 154 MW or 213,000 horsepower or about a thousand car motors. So two spill gates at 168 MW are more than the full generation capacity.
So whats the power check look like full blast? 154 MW times $.07/KWH or $70/MWH = $10,780 per hour or $7.76 million per month Of course average reality is a fraction of this...ain't that much water.
So what's the spill gate loss? 84MW times $70/MWH = $5880 per hour per gate
Just curious. Time to go swimming now.
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Name: |
JTenn
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Subject: |
Yet more inside Numb3rs
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Date:
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7/9/2013 3:54:11 PM
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That last post really sums it up. It doesn't make any difference how much we think AL Power is doing,their going to do whatever they think best for them with minor regards to everything else.
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Name: |
Summer Lover
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Subject: |
Beauty eh?
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Date:
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7/9/2013 4:28:49 PM
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Go jump in the lake hoser....
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Name: |
mariah1
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Subject: |
Yet more inside Numb3rs
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Date:
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7/9/2013 7:27:21 PM
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Actually if you go on the dam tour you will find out where the 21st gate is located.
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Name: |
crappyattitude
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Subject: |
Take off, eh....
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Date:
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7/10/2013 7:49:18 AM
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Crappy : )
(Just outside of Nashville)
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Name: |
bushhog
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Subject: |
Yet more inside Numb3rs...why ???
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Date:
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7/10/2013 9:21:40 AM
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These people need to get a life !!! Go and enjoy Chimney Rock on Saturday afternoon. And don't look at the different level of rock !! Get a life !
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Name: |
HP HQ
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Subject: |
Yet more inside Numb3rs...why ???
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Date:
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7/10/2013 2:09:32 PM
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Lmao!! Funny
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Name: |
UncleSam
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Subject: |
Yet more inside Numb3rs...why ???
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Date:
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7/10/2013 4:15:52 PM
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While they are busy getting a life, you can busy yourself by learning the difference between Chimney Rock and Acapulco Rock.
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Name: |
CAT BOAT
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Subject: |
Yet more inside Numb3rs...why ???
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Date:
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7/10/2013 6:04:36 PM
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Uh oh.
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Name: |
crappyattitude
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Subject: |
Just be happy...
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Date:
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7/11/2013 12:55:26 PM
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That you have water NEAR the flood gates. Up here, the water hasn't been anywhere near the floodgates in years. Other than during floods... then it is released as quickly as they can... Just ask TallCotton about it.
http://www.wjle.com/news/2011/center-hill-dam-rehab-transitions-next-phase
Crappy : )
(Just outside of Nashville)
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Name: |
Shortbus
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Subject: |
Yet more inside Numb3rs
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Date:
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10/10/2021 11:00:52 AM (updated 10/10/2021 11:11:54 AM)
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ain't that much water...................................
Just noticed the figures for how much water.
Generation capacity is 183MW. Cannot be continuous because of lack of water.
Annual generation is 327 MKwH.
So what would yearly (8760 hours/year) generation be at full tilt? 1603080 MWH/year
So what is the duty cycle or percent of full blast generation in reality?
327 MKwH/1603080 MKwH
Looks like about 20% of full generation used yearly on average.
So whats the power check look like full blast? 154 MW times $.07/KWH or $70/MWH = $10,780 per hour or $7.76 million per month Of course average reality is a fraction of this...ain't that much water.
So the power check is derated to 20%.
Martin Dam makes $2156/hour or $1.55 million/month on yearly average @ 7 cents/KwH
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