But I'm just a teen in public (Californian) high school, so I guess I should have just waited for someone like "RideMan" to respond. :)
Then again, I don't know exactly how the launch works. Compressed nitrogen? Definately a curveball.
I wouldn't think that it would be that high.
Kingda Ka moves 1400 riders per hour that works out to be about 78 trains per hour. So today, the park will be open for 11 hours, so that's about 858 launches at $50 a pop would be about $42,900. I could not imagine a park, especially a Six Flags spending that kind of money on a daily basis for an attraction. In a month, they could be spending over a million just in operating costs. That’s just not particle.
hmmm, maybe thats why TTD and KK Have so much downtime? I know thats not the reason but it could be one of the reasons they dont run on a frequent basis.
Wrong! Monty Jasper said that the electric bill for Dragster is higher than that of Wicked Twister. Add in the air conditioning, and look out.
I think not so much money in electricity. The pumps that compress the nitrogen probably don't use much for how much potential energy it creates.
Energy is energy. It takes a lot of energy to shoot something up over 400 feet in the air. You can't do more with less. The only thing you can do is try to tweak the efficiency of the system. Judging by the insane heat those things generate, I'm going to take a stab in the dark and say it's not a very efficient system.
the hydraulic system uses 10,000 hp of power. General conversion is 1hp = 745.7W, so that is 7457 Kilo watts of power. According to several other articles, they wanted intially to use LIM's because it would be more energy efficient, but in the end it not have the needed power to accelerate the vehicle to meet thier design. Basically the hydraulic system could launch the vehicle in less distance and at a greater acceleratoin, thus it was chosen.
For comparisons sake, the amount of power for Flight of Fear is 1980KW, according to this article below.
That was taken from an electrical engineering company, that did work for PKI to eliminate the reactive power (VARS) on Flight of Fear. So since that ride is using large inductive motors, there will be a phase difference between current and voltage, and they corrected it so there is no lag.
So if that hydraulic launch is really less energy efficient, 7457KW seems ball park if you compare it to Flight of Fear, and consider that one is launching a vehicle to 120 mph in 4 seconds, and another is launching one to 54 mph in around the same time.
Now on to determing the cost to launch the ride. So although the launch is 4 seconds, the article about hydraulics mentions that the system is used for 6 seconds during launch, so will use that. I don't really no if either is correct but use the larger number as kind of an upper limit/maximum value that it could cost.
So now lets show the values and calculate it:
Power for 1 launch = 7457KW
Use of Power for Launch = 6 seconds
Energy Used = (7457KW)*(6s)*(1hr/3600s)
Energy Used = 12.43KWH
This is energy used for 1 launch
So using the theoretical capacity, since that is also an upper bound type value, and will yield the highest possible value.
capacity = 1400 pph
Trains Launched in hour = 78 (18 passenger trains)
Trains Launched in 1 day = 1092 trains (14 hours, 10am to 12 pm on saturdays)
So 1092 times will need this peak power and will use it for around 6 seconds
Total Energy used = 1092*12.43 KWH
Total Energy Used = 13573.56KWH
Total Cost = (13573.56KWH)*(10cents/KWH)
Total Cost = 135735.60 cents
Total Cost = 1357 dollars and 36 cents a day
I guess that number seems reasonable. This is just to launch the ride, and does include other electrical energy cost, such as lights, sensors/PLC's, ect. But does 1357 dollars sound to high, low, or around ball park?
yes 1 hp = 745.7 W
I used that above, to convert the 10,000 hp used in hydraulic launch system to come up with 7457KW used in launch system. I think my math is ok, but skipped a few steps since I thought it was rather easy to follow.
here is the math step by step if you want to check though:
10,000hp*(745.7W/1hp)*(1KW/1000W) = 7457KW
That seems right to me, read the whole post and tell me if it makes more sense. My math seems ok.
I run a 32 lane bowling center and in comparison, our highest electric bill is about $4500 in the middle of summer, with the air conditioning going full bore for a 30000 SF building, and the lanes, and scoring, and etc....
That's 4 days worth of TTD....man...the economics of scale of my bowling center pales in comparison....like a drop in a bucket.
A top fuel dragster burns through around $400 in fuel, and $3000 in wear and tear, with each run down the track. ;)
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