Re: [biofuel] Average BTU consumed Per Passenger mile by mode of travel
I've always wondered about the validity of these figures: MH wrote: (snip) > ÷÷ > "It takes less energy to bicycle one mile than it takes to walk a mile. In > fact, a bicycle can be up to 5 > times more efficient than walking. (snip) Because there is obviously a vast difference in how people both walk and bicycle. I ride a lot, and at least 90% of the time at a fairly good pace with elevated heart rate, breathing, etc. OTOH, when I walk I never experience that sort of "pump", so I have a hard time seeing how I burn less calories riding than walking. I get there faster on a bike, but with more effort. I also observe many people however who ride much more leisurely, often coasting whenever possible, while I usually pump just as fast downhill (unless it's very steep, which it isn't around here). So I wonder which type of rider and walker they measured? -- Harmon Seaver CyberShamanix http://www.cybershamanix.com Yahoo! Groups Sponsor -~--> Tiny Wireless Camera under $80! Order Now! FREE VCR Commander! Click Here - Only 1 Day Left! http://us.click.yahoo.com/WoOlbB/7.PDAA/ySSFAA/FGYolB/TM -~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] Average BTU consumed Per Passenger mile by mode of travel
I probably should have mentioned when referring to food/drink calories we consume where talking about the big C as in Calories such as kilo calories or kcal*. NOT the small c as in calories. This should help reduce some confusion. 1 Btu = 252 calories = 0.252 kcal* = 0.293 watts = 0.000295 kWh = 0.000393 HPh = 1.055 kJ Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] Average BTU consumed Per Passenger mile by mode of travel
> I remember reading somewhere that a person on a bicycle on level ground > with no wind pedaling @15 MPH gets the equivalent of something like > three thousand "miles per gallon" Per gallon of what? ÷÷ "It takes less energy to bicycle one mile than it takes to walk a mile. In fact, a bicycle can be up to 5 times more efficient than walking. If we compare the amount of calories burned in bicycling to the number of calories an automobile burns, the difference is astounding. One hundred calories can power a cyclist for three miles, but it would only power a car 280 feet (85 meters)!" (with a .gif image showing) "A comparison of the energy cost of various forms of transportation shows that the bicycle is most energy-efficient." (kcal/km per person) (copied from: http://www.exploratorium.edu/cycling/humanpower1.html) "A bicycle is also the world's most energy efficient mode of travel, using just 35 calories per passenger mile versus 1860 for an average automobile with one occupant." (copied from: http://www.bicyclinglife.com/NewsAndViews/5_Different_Reasons.htm) 1 Btu = 252 calories = 0.252 kcal = .293 watts = 0.000295 kWh = .000393 HPh = 1.055 kJ "Conversion Calculator for Units of ENERGY" http://www.ex.ac.uk/cimt/dictunit/ccenrgy.htm Yahoo! Groups Sponsor -~--> Tiny Wireless Camera under $80! Order Now! FREE VCR Commander! Click Here - Only 1 Day Left! http://us.click.yahoo.com/WoOlbB/7.PDAA/ySSFAA/FGYolB/TM -~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] Average BTU consumed Per Passenger mile by mode of travel
> >>Average BTU consumed Per Passenger mile by mode of travel: > >> > >>SUV: 4,591 > >>Air: 4,123 > >>Bus: 3,729 > >>Car: 3,672 > >>Train: 2,138 > >> > >>Source: Bureau of Transportation Statistics > >>http://199.79.179.77/btsprod/nts/Ch4_web/4-20.htm > >> >I remember reading somewhere that a person on a bicycle on level ground >with no wind pedaling @15 MPH gets the equivalent of something like >three thousand "miles per gallon" > >Arne ... Read down a bit for bicycles. http://www.cogsci.ed.ac.uk/~ira/illich/facts/social_effects.html Social effects of motorized transport - Ivan Illich * The United States puts between 25 and 45 per cent of its total energy (depending upon how one calculates this) into vehicles: to make them, run them, and clear a right of way for them when they roll, when they fly, and when they park. For the sole purpose of transporting people, 250 million Americans allocate more fuel than is used by 1.3 billion Chinese and Indians for all purposes. * The model American male devotes more than 1,600 hours a year to his car. He sits in it while it goes and while it stands idling. He parks it and searches for it. He earns the money to put down on it and to meet the monthly installments. He works to pay for gasoline, tolls, insurance, taxes, and tickets. He spends four of his sixteen waking hours on the road or gathering his resources for it. And this figure does not take into account the time consumed by other activities dictated by transport: time spent in hospitals, traffic courts, and garages; time spent watching automobile commercials or attending consumer education meetings to improve the quality of the next buy. * The model American puts in 1,600 hours to get 7,500 miles: less than five miles per hour. In countries deprived of a transportation industry, people manage to do the same, walking wherever they want to go, and they allocate only 3 to 8 per cent of their society's time budget to traffic instead of 28 per cent. What distinguishes the traffic in rich countries from the traffic in poor countries is not more mileage per hour of life-time for the majority, but more hours of compulsory consumption of high doses of energy, packaged and unequally distributed by the transportation industry. * Man, unaided by any tool, gets around quite efficiently. He carries one gram of his weight over a kilometer in ten minutes by expending 0.75 calories. Man on his feet is thermodynamically more efficient than any motorized vehicle and most animals. For his weight, he performs more work in locomotion than rats or oxen, less than horses or sturgeon. At this rate of efficiency man settled the world and made its history. At this rate peasant societies spend less than 5 per cent and nomads less than 8 per cent of their respective social time budgets outside the home or the encampment. * Man on a bicycle can go three or four times faster than the pedestrian, but uses five times less energy in the process. He carries one gram of his weight over a kilometer of flat road at an expense of only 0.15 calories. The bicycle is the perfect transducer to match man's metabolic energy to the impedance of locomotion. Equipped with this tool, man outstrips the efficiency of not only all machines but all other animals as well. * Bicycles are not only thermodynamically efficient, they are also cheap. With his much lower salary, the Chinese acquires his durable bicycle in a fraction of the working hours an American devotes to the purchase of his obsolescent car. The cost of public utilities needed to facilitate bicycle traffic versus the price of an infrastructure tailored to high speeds is proportionately even less than the price differential of the vehicles used in the two systems. In the bicycle system, engineered roads are necessary only at certain points of dense traffic, and people who live far from the surfaced path are not thereby automatically isolated as they would be if they depended on cars or trains. The bicycle has extended man's radius without shunting him onto roads he cannot walk. Where he cannot ride his bike, he can usually push it. * The bicycle also uses little space. Eighteen bikes can be parked in the place of one car, thirty of them can move along in the space devoured by a single automobile. It takes three lanes of a given size to move 40,000 people across a bridge in one hour by using automated trains, four to move them on buses, twelve to move them in their cars, and only two lanes for them to pedal across on bicycles. Of all these vehicles, only the bicycle really allows people to go from door to door without walking. The cyclist can reach new destinations of his choice without his tool creating new locations from which he is barred. * Bicycles let people move with greater speed without taking up significant amounts of scarce space, energy, or time. They can spend fewer hours on each mile and still travel more miles in a year. They can get the benefit of technological breakthroughs
Re: [biofuel] Average BTU consumed Per Passenger mile by mode of travel
- Original Message - From: "Arne P. Ryason" < Sent: Sunday, January 13, 2002 22:23 Subject: Re: [biofuel] Average BTU consumed Per Passenger mile by mode of travel > > > >> > I remember reading somewhere that a person on a bicycle on level ground > with no wind pedaling @15 MPH gets the equivalent of something like > three thousand "miles per gallon" > > Arne ... > Per gallon of what? Cokes from 7-11? Greg H. Yahoo! Groups Sponsor -~--> Tiny Wireless Camera under $80! Order Now! FREE VCR Commander! Click Here - Only 1 Day Left! http://us.click.yahoo.com/WoOlbB/7.PDAA/ySSFAA/FGYolB/TM -~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] Average BTU consumed Per Passenger mile by mode of travel
> > >>Average BTU consumed Per Passenger mile by mode of travel: >> >>SUV: 4,591 >>Air: 4,123 >>Bus: 3,729 >>Car: 3,672 >>Train: 2,138 >> >>Source: Bureau of Transportation Statistics >>http://199.79.179.77/btsprod/nts/Ch4_web/4-20.htm >> I remember reading somewhere that a person on a bicycle on level ground with no wind pedaling @15 MPH gets the equivalent of something like three thousand "miles per gallon" Arne ... Yahoo! Groups Sponsor -~--> FREE COLLEGE MONEY CLICK HERE to search 600,000 scholarships! http://us.click.yahoo.com/vf6MrB/4m7CAA/ySSFAA/FGYolB/TM -~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Re: [biofuel] Average BTU consumed Per Passenger mile by mode of travel
"Tim Castleman" <[EMAIL PROTECTED]> wrote: >Average BTU consumed Per Passenger mile by mode of travel: > >SUV: 4,591 >Air: 4,123 >Bus: 3,729 >Car: 3,672 >Train: 2,138 > >Source: Bureau of Transportation Statistics >http://199.79.179.77/btsprod/nts/Ch4_web/4-20.htm Nice numbers Tim. Here are some more: http://www.theglobalist.com/nor/factsheets/2001/10-23-01.shtml Globalist Factsheet U.S. Fuel Efficiency Prepared by Nikolas Win Myint It is no secret that the United States has a big appetite for oil. The reason? Well, for one, Americans like large cars - and drive a lot. Yet aside from environmental considerations, this appetite poses problems for the United States by creating a dependence on oil from the Middle East. The region is once again becoming highly unstable. Our new Globalist Factsheet examines the state - and future potential - of fuel efficiency in the United States. How much fuel do U.S. cars consume? As of 2001, U.S. cars and light trucks consume 10% of the annual global oil production - about 8 million barrels a day out of 77 million. (Washington Post) What is the U.S. record on fuel consumption? Since 1973, cars in the United States have become nearly 50% more fuel-efficient - rising from an average of 13 miles per gallon to 21 miles per gallon in 2000. (Washington Post) As of 2001, at 75 miles per gallon, the Volkswagen Lupo 3L TDI is the most environmentally friendly car. (Volkswagen) What is the impact of Sports Utility Vehicles - or SUVs - on U.S. gas consumption? The increased popularity of large sport-utility vehicles has kept U.S. fuel efficiency from increasing above the 21 miles per gallon level since 1991. (Washington Post) How popular are SUVs and light trucks among U.S. customers? In 2001, five of the top ten selling cars in the United States are SUVs or light trucks. On average, the top-selling SUVs and light trucks yield only 18.4 miles per gallon. (Autonews.com) Also see our related Richter Scale feature on the connection between SUVs and U.S. anti-terrorism policy. Why are Americans so unconcerned about their cars' gas mileage? Between mid-September and early October 2001, the average U.S. retail price for a gallon of gasoline dropped by nearly $0.18, to an average of $1.35 per gallon - the lowest level since February 2000. (U.S. Department of Energy) How does that compare internationally? In August 2001, the average price for a gallon of gas in France was $3.48, in Germany $3.37, in Italy $3.56, in the United Kingdom $4.17 and in Japan $3.33. On average, gasoline in those countries is almost three times as expensive. (International Energy Agency) As of 2001, U.S. cars and light trucks consume 10% of the annual global oil production - about 8 million barrels a day out of 77 million. (Washington Post) What amount of energy is actually used on moving the driver? Cars use only 1% of their fuel energy to move the driver. (Washington Post) Is it difficult for Americans to construct more efficient cars? As of 2001 - using only existing technologies and without harming safety or performance - the fuel economy of U.S. cars could be raised by 17% to 36% and by 27% to 47% for light trucks. (National Research Council) Which car is the most fuel-efficient vehicle on the market right now? As of 2001, the most environmentally friendly car is the Volkswagen Lupo 3L TDI which runs 75 miles on a gallon. (Volkswagen) How does this compare to the best-selling cars in the United States? The ten top-selling vehicles in the United States averaged only 25.7 miles per gallon. (Washington Post) What is the market share of U.S. companies in the category of fuel-efficient cars? In 2001, of the top ten most fuel-efficient cars, only one is made in the United States. Five are made in Japan and four in Germany. Ranking 8, the only U.S. made car on that list is the Chevrolet Prizm. (Environmental Protection Agency) Cars use only 1% of their fuel energy to move the driver. (Washington Post) How popular are fuel-efficient cars in the United States? The ten most fuel-efficient cars, as rated by the U.S. Environmental Protection Agency, account for only 0.57% of the U.S. auto market. (J.D. Power & Associates) And how many of the ten top-selling cars are made in the USA? In 2001, seven of the ten top-selling cars in the United States are U.S. made - five Ford models, one Dodge and one Chevrolet. The remaining three are Japanese made - two Hondas and one Toyota. (Autonews.com) What is some of the technical jargon involved? CAFE stands for Corporate Average Fuel Economy. (Washington Post) October 23, 200 Yahoo! Groups Sponsor -~--> FREE COLLEGE MONEY CLICK HERE to search 600,000 scholarships! http://us.click.yahoo.com/vf6MrB/4m7CAA/ySSFAA/FGYolB/TM -~-> Biofuel at Journey to Forever: http://journeytoforever.or
[biofuel] Average BTU consumed Per Passenger mile by mode of travel
Average BTU consumed Per Passenger mile by mode of travel: SUV: 4,591 Air: 4,123 Bus: 3,729 Car: 3,672 Train: 2,138 Source: Bureau of Transportation Statistics http://199.79.179.77/btsprod/nts/Ch4_web/4-20.htm [Non-text portions of this message have been removed] Yahoo! Groups Sponsor -~--> Tiny Wireless Camera under $80! Order Now! FREE VCR Commander! Click Here - Only 1 Day Left! http://us.click.yahoo.com/WoOlbB/7.PDAA/ySSFAA/FGYolB/TM -~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
