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Fuel heat requirement of the British LSR

Posted by IronChief 
Fuel heat requirement of the British LSR
January 28, 2019 02:46PM
I was doing some looking at the fuel consumption on the British LSR with it's 12 boilers.

It consumed 14.5 kg per minute of liquid propane. 1kg = 2.2 pounds US

14.5 X 2.2 = 31.9 pounds per minute

31.9 / 4.24 pounds per gallon = 7.5 gallons per minute

7.5 X 91,000 BTU per gallon = 684,000 BTU per minute

684,000 BTU X 60 minutes = 41 million BTU per hour.

Wow! That's enough heat for 400 small homes.

-Ron



Edited 1 time(s). Last edit at 01/28/2019 02:47PM by IronChief.
Re: Fuel heat requirement of the British LSR
January 29, 2019 12:32PM
Somewhere on the internet, the numbers are wrong.confused smiley

41 million btu., is 1224 boiler HP.

Wikipedia is indicating 10 million btu. per hour, which is still a lot.
And this page is indicating 3 Megawatts of heat
The turbine they used is in the 326 hp.
Re: Fuel heat requirement of the British LSR
January 29, 2019 04:23PM
Im going to support Scott on this one. Had I believed there was such an actual thermal loss, I would be going about corn burner is cheaper to run.
without those numbers there huge... I believe unpracticable smiling smiley
Re: Fuel heat requirement of the British LSR
January 29, 2019 04:37PM
I was basing it on the fuel consumption as stated is 14.5 kg per minute of liquid propane. I'm pretty sure my math is right.

From this page:

[www.steamcar.net]

Quote: "The water rig supplies water at 40-50litres per minute at 40-bar pressure. The Gas and Air rig is used to supply liquid propane at ~14kg per minute. It is a complex process."

Somewhere I seen 14.5.

-Ron



Edited 1 time(s). Last edit at 01/29/2019 04:38PM by IronChief.
Re: Fuel heat requirement of the British LSR
January 29, 2019 04:48PM
YA but the thing did not go off a launch pad. were forgot the top speed is only like 150MPH.!!!!!


[www.youtube.com]

lets do the math on this thing, over 380MPH



Edited 3 time(s). Last edit at 01/29/2019 05:11PM by Jeremy Holmes.
Re: Fuel heat requirement of the British LSR
January 30, 2019 04:04AM
Perhaps too much of the energy produced was swallowed up in forcing water/steam through 3 kilometers of tubing! I think the burner side was better engineered than the steam generator pipery.

Mike
Re: Fuel heat requirement of the British LSR
January 30, 2019 05:25AM
It would help if we knew more about the turbines used. Generally speaking, turbines are "one speed" devices, but the car velocity was always changing....so we know they were often off the design rpm. Heck, assuming they designed the vehicle for higher speeds, they might never have come all that close to optimum rpm.
Re: Fuel heat requirement of the British LSR
January 30, 2019 08:17AM
Old thread discussing British LSR vehicle
Re: Fuel heat requirement of the British LSR
January 30, 2019 10:43AM
One thing to keep in mind too is they had to use a fired vaporizer to convert liquid to gas just like our steam car burners, so that vaporizer required fuel as well. With the amount of fuel processed, it undoubtedly took quite a bit of heat to do that. And too, this was a research/development project, so it is likely the figures were changing continually and posted over a long period of time and probably the reason they are not coinciding.

-Ron
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