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Author Topic: howler  (Read 2128 times)
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tortoise
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« on: April 17, 2007, 11:12:03 AM »

From Landracing.com homepage:
 
"British Steam Car Challenge Coming to a Boil 
Written by Administrator     
Friday, 13 April 2007 
 . . . The boilers will generate a formidable four megawatts of energy – almost enough to power a small town for a day."

 
 
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sockjohn
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« Reply #1 on: April 17, 2007, 08:16:42 PM »

From Landracing.com homepage:
 
"British Steam Car Challenge Coming to a Boil 
Written by Administrator     
Friday, 13 April 2007 
 . . . The boilers will generate a formidable four megawatts of energy – almost enough to power a small town for a day."

 

They claim their turbine makes 350HP, and at 750 watts per HP, this comes out to around 275KW, which seems like the boiler is seriously over sized. 

Anyone know why?  I wouldn't be surprised that it's over sized, but this seems way over sized.
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JackD
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« Reply #2 on: April 17, 2007, 08:20:46 PM »

Hot Tea all around.
« Last Edit: April 18, 2007, 09:05:42 AM by JackD » Logged

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« Reply #3 on: April 18, 2007, 08:48:21 AM »

Tthere's confusion of time element in the statement:  "...four megawatts of energy – almost enough to power a small town for a day."

A megawatt is an instantaneous measurement.  Ergo the statement should read:  "... almost enough to power a small town."  Or, perhaps the statement could be changed to read "...four megawatt-hoursalmost enough to power a small town for a day."

The latter would imply that the complete boiler system has a limited supply of energy available to make the steam -- so many cu. ft. of natural gas, for instance, or so many lumps of coal, etc.  This is likely -- the car won't have a long tube attached to deliver a stream of gas, and probably won't have a coal car (tender) trailing behind with a guy shoveling coal like the dickens.

By the way, let's do some other math:  A common household electrical bill is for 500-750 kwh/month.  Assume 600 kwh/month for this exercise, divide by 30 days and come up with 20 kwh/day.  4 Mwh = 4000 kwh divided by 20/house = 200 houses.

Pretty small town, but there are some that size, especially way up north.
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Stainless1
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« Reply #4 on: April 18, 2007, 09:09:36 AM »

Tthere's confusion of time element in the statement:  "...four megawatts of energy – almost enough to power a small town for a day."

A megawatt is an instantaneous measurement.  Ergo the statement should read:  "... almost enough to power a small town."  Or, perhaps the statement could be changed to read "...four megawatt-hoursalmost enough to power a small town for a day."

The latter would imply that the complete boiler system has a limited supply of energy available to make the steam -- so many cu. ft. of natural gas, for instance, or so many lumps of coal, etc.  This is likely -- the car won't have a long tube attached to deliver a stream of gas, and probably won't have a coal car (tender) trailing behind with a guy shoveling coal like the dickens.

By the way, let's do some other math:  A common household electrical bill is for 500-750 kwh/month.  Assume 600 kwh/month for this exercise, divide by 30 days and come up with 20 kwh/day.  4 Mwh = 4000 kwh divided by 20/house = 200 houses.

Pretty small town, but there are some that size, especially way up north.

SSS, a little anal, maybe you are in the right job...  grin
There are actually a lot of small towns all over the country with less than 200 houses.  In the flat lands there are towns with 12 people and a grain elevator... OK seasonal power requirements may be higher...  wink
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Stainless 
 MSA Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.
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« Reply #5 on: April 18, 2007, 09:12:50 AM »

Stainless:

I graduated with a liberal arts degree from an engineering college.  I may be the only guy you know that took "elective" courses like engineering physics, mathematical astronomy, math through diff. eq., etc. 

Being "anal" was taught in a 200-level course at Tech.
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« Reply #6 on: April 18, 2007, 10:09:48 AM »

Tthere's confusion of time element in the statement:  "...four megawatts of energy – almost enough to power a small town for a day."

A megawatt is an instantaneous measurement.  Ergo the statement should read:  "... almost enough to power a small town."
Also delete the "of energy", and we're OK. "Four megawatts of energy" is like "four miles per hour of distance".
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« Reply #7 on: April 18, 2007, 10:41:46 AM »

The project certainly shows promise. wink
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« Reply #8 on: April 18, 2007, 10:55:31 AM »

Stainless:

I graduated with a liberal arts degree from an engineering college.  I may be the only guy you know that took "elective" courses like engineering physics, mathematical astronomy, math through diff. eq., etc. 

Being "anal" was taught in a 200-level course at Tech.

I worked technical issues on antique airplanes for Boeing for over 25 years.... I thought I spotted some flaws in your BA.  Most of the guys I worked with took Anal 200 through 600.   cheesy  rolleyes  wink
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Stainless 
 MSA Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.
 Builder of Bike 278 1000cc APS-G,  Kids Red Hat Record 208.959 (old PS rules)
 Other kids A-G record 179.172  Josh O record 182.266
 Co-owner of the Amo Steele Streamliner, #1411... still sorting
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« Reply #9 on: April 18, 2007, 11:13:55 AM »


[/quote]

I worked technical issues on antique airplanes for Boeing for over 25 years.... I thought I spotted some flaws in your BA.  Most of the guys I worked with took Anal 200 through 600.   cheesy  rolleyes  wink
[/quote]

SSS, Stainless is the king, he should really understand being anal.
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jgowetski red hat @ 221.183 MPH MSA Lakester, Bockscar #1000 60 ci normally aspirated w/N20
tortoise
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« Reply #10 on: April 18, 2007, 11:14:58 AM »

Being "anal" was taught in a 200-level course at Tech.
I see you're still active in anus-related work.
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« Reply #11 on: April 18, 2007, 12:04:20 PM »

I showed my neighbor my BA, and they had me arrested.

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« Reply #12 on: April 18, 2007, 12:38:02 PM »

VOLUNTEER WANTED!

Must be willing to climb into tight, enclosed cockpit also containing steam boilers generating 4 megawatts of power on a 100-degree day in the desert.

Apply to:

British Steam Car Challenge......
Jolly Olde, England


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« Reply #13 on: April 18, 2007, 06:14:17 PM »

Perhaps if they booked some time on a Dude Ranch in Colorado and further developed their Calf Roping skills they would have less trouble getting a driver.
The Panatonic driver from Japan is probably available.
Magoo may already have that lined up. wink
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« Reply #14 on: April 18, 2007, 06:49:34 PM »

Maybe the guy in small town house # 201 would be willing to drive.  With not enough power left to keep him warm he may welcome the change.
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