2009-03-12
Automobile technology that will really save lives and energy
A couple weeks ago a driver in Ontario got caught doing 250 km/hr in a 100 km/hr zone. (For you yanks that's about 155 mph in a 65 mph zone).
Wow. $10,000 fine.
Question is, if Canada's top speed limit is I believe 120 km/hr, why are street legal vehicles able to exceed that by over 100%?
Here in Quebec, cruising at 120 km/hr in a 100 zone is very unlikely to result in a ticket. Let's say that 120 is a reasonable top speed.
So, first thing that automobiles should be required to have when delivered at the dealer is a throttle cutoff at, say, 140 km/hr. Period.
Pushing this a little further, highways could have transmitters that broadcast the top legal speed of the road. In a 100 km/hr zone, the car would not be able to exceed, say, 120.
And as a benefit to highway maintenance and construction crews, orange zones would transmit appropriately lower limits with only a small overspeed allowance. (if the zone is 80, then the top speed cars would go would be 85).
Tamper with the device and the car is seized and destroyed at the owners expense.
Now that we've got the idea going, let's take it a step further: tax the fuel hog - reward the miser. Here's how it works.
1) Every car has a province issued transponder (a digital two-way radio). Whenever you pull up to a gas pump the transponder and the gas pump have a conversation. The car reports the car model, mileage since the last fill up and the number of litres at that fill up.
2) The gas pump assigns a tax according to the efficiency of the vehicle. The less efficient, the heftier the per-litre tax. The more efficient, the less tax. For the really efficient a tax rebate is given.
3) Every year or so, the mileage requirement to get a rebate increases. The tax for the fuel hogs increases. The rebate for the efficient goes up more and more (since the returns will be slimmer and slimmer, you have to reward more for those who push the limits).
4) Now the above is a bit harsh on some vehicle operators such as car pools, schools, businesses and so on. So a method to soften the blow needs to be built in.
Summary: the above is the way to go if you really want to reduce fossil fuel consumption at the pump.
2009-02-25
Junk Heat
Some industries reject heat as a by product of their operations. One of these is the server farm. A server farm consumes a lot of electrical power and generates enormous amounts of heat. This is typically 'rejected' to the atmosphere by large coolers (basically radiators: a coil with a fan).
Quebec is an ideal place for server farms. Lot's of relatively cheap electricity and very high speed optical networks.
Further Quebec has many industries that heat water for use in many processes.
As a means to getting more out of our electricity (freeing up more to be sold to the US, for example), we should co-locate server-farms with industries that take in cold water and then heat it for use in their processes.
In this way the enormous heat generated by a server farm could be used to pre-heat the cold water for the co-located industry. This would reduce the energy consumption of that industry while providing a heat sink for the server farm.
The server farm would charge the industry for that heat, say 2 cents per kWh. This is much cheaper than what the industry is paying for the same amount of heat (whether electric or natural gas). In turn, less 'new' energy is consumed, costs are less and the carbon footprint is reduced for both companies.
As an example, a 1000 server farm consumes about 500,000 W for annual cost of about $175,000. That same 500 kW can be sold as heat to the adjacent industry at, for example, 2c / kWh. That would be a return of about $87,000 per year.
Further, the need for air conditioning would be avoided - in effect the cool water used by the adjacent industry would be the air conditioning for the server farm.
Don't junk heat - recycle it.
2009-01-26
Auto Emissions - physical realities
More fuel is used during highway acceleration at any rate than while cruising down the highway at 110 km/hr. And the more vigorously one accelerates, the worst this is.
Why? Mainly because gasoline and diesel engines are horribly inefficient in cruise and much worse during acceleration. In cruise an engine delivers about 25% conversion to mechanical energy. That is to say that for every 100 litres of gasoline you buy, 75 litres is wasted as heat, never providing a benefit. As if that were not bad enough, it is even worse during acceleration, especially if the driver has a heavy foot. During acceleration all kinds of parsitic drag act on the engine. This includes induction air resistance (which the engine has to use more fuel to overcome), accessories (alternator, air conditioning, power steering, power brakes, etc.) and a richer mixture of fuel to air required when the engine is accelerating not to mention getting the exhaust out of the engine which adds a load just pushing it through the tailpipe (erroneously called 'backpressure'. It's simply resistance).
In effect, during highway cruise an automobile only needs a fraction of its installed horsepower. In turn it is wasting energy transporting that headroom horsepower around. Funny. (and wasteful).
It all comes to roost based on a very simple high school physics equation that is a result of the second law of motion from Sir Isaac Newton.
F = ma
Force, the 'strength' that something is pushed with is equal to the mass times the rate of acceleration.
Some people like to acclerate like crazy. 0 to 100 km/hr in 5 seconds! ("a" above). Well, to achieve that a powerful and high torque engine is required. (That's the "F" above).
Some people, often in the same group as above, also like their large vehicle and to have it lushly appointed for comfort and entertainment. That's the "m" above.
So, people want a lot of "a" and they like the comfort of "m". This means a big "F" under the hood that gobbles fuel whenever "a" is greater than 0.
Could it be worse? Well of course! In the real world there is no such thing as constant speed, at least as far as the engine is concerned. Huh? Well, it's like this: in the real world the auto faces wind resistance and rolling resistance. Wind resistance follows another equation derived from the equation above. I won't write it out here. Oh, okay, since you insist. It's:
Drag = Cd D S V^2 / 2
Where Cd is a constant representing the drag coefficient, D is the density of the air, S is the surface area of the car (seen from the front) and V is the speed (^2 means "squared").
When cars are less aerodynamic (as they've tended to become over the last 10 years) then "Cd" goes up. Cars have gotten large, so "S" goes up too. (Eg: a Jeep Cherokee is quite high compared to an automobile of the same width).
Drag goes up as a square of the velocity. There is 4 times as much aerodynamic drag at 100 km/hr than at 50 km/hr. Compound that with poor aerodynamics and large area and the Drag is really high.
Back to the top. Drag means that if you take your foot off the gas, the car will slow down. When at constant speed on the highway, your foot is always on the gas. The power of the engine is working against the deceleration (-a) due to the wind and rolling resistance. The engine is always applying a force to overcome the force of drag. It is a hidden "F=ma" if you will. Funny how that crops up to use more gas.
Clearly, other than reducing speed (say 100 instead of 120, you do the math, remember to square) a large improvement can come from improving the aerodynamics of the car, esp. by reducing the frontal area of the car and making the rear tapered so it doesn't pull a roiling mass of air behind it (notice that airliners have pointy tails?).
Next, consider rolling resistance. This is the tires against the road. Tires are soft compared to the road so energy is lost in continuously reshaping the tire as it rolls. (This is why the temperature of the tires rises as you drive). The faster you go, the more resistance. The softer the tire, the more resistance (as there is more deformation/reformation as well as more tire in contact with the road.) The larger the car, the larger the tires and even more is in contact with the road. (Trains are about 3x more fuel efficient than trucks in part because they have very high wheel pressure on the rail)
This is where things compound and make cars horribly inefficient.
As vehicles get larger they obviously get heavier. As cars get heavier, they need larger engines. Larger engines mean larger transmissions, drive trains and support structures. Larger cars have larger wheels, larger tires and larger brakes.
All of those "largers" also mean more weight. More "m" from the first equation above. And to make it worse, we seem to want a lot of "a" meaning bigger engines and the consequences of that.
Clearly it is past time to put childish things asside.
Smaller cars with moderate acceleration requirements mean a lot less surface area to resist the wind, a lot less rolling resistance against the road, a lot less weight to accelerate and stop and smaller engines that require less fuel to accelerate the above. It is a compounding effect.
The wrong use of recent engine efficiencies.
Ironically, engine efficiency has improved remarkably over the last 30 years. Electronic fuel injection, microprocessors, variable valve timing, aluminum block engines, advanced induction and exhaust systems and more have combined to get more power out of the same sized engine. However, while the power to weight ratio has improved, the consumption per hp has not improved as much.
Car makers have taken advantage of the higher power to weight ratios to push around heavier vehicles even while giving them the "desired" performance in acceleration.
One has to ask the question: since power to weight ratios have improved, why not keep power constant and make the engines smaller, lighter and cheaper? That would result in improved fuel efficiencies as it would contribute to lighter transmission and driver train, smaller wheels and brakes. Instead, led by the former "big 3", Mercedez and BMW, automobiles post records for more and more power every year with scant (if any) improvements in fuel efficiency.
Turbochargers.
Turbochargers could help, however they are most efficient as a function of exhaust gas flowing through them (called volumetric efficiency). This means that they are very good at increasing the horsepower of an engine, but that is only a benefit during acceleration. And during an acceleration the turbocharger only helps the engine use more fuel. (Note that on piston powered aircraft turbochargers have only a beneficial effect: they allow operation at high altitude where the density of the air is lower, hence less drag [same equation above applies]).
Next: let's discuss electric vehicles for Canada. It's not a clear cut case.
2008-12-22
Bank of Montreal cash grab on mortgages
2008-11-13
Kafka meets RBC insurance
2008-08-11
Deepest known vaccuum: Trudeau airport sucks
2008-06-12
I want to pay 33% on my mutual funds...
2008-05-23
Immigrant Accommodation - Immigrant first.
Chiefly among the things that immigrants should have to agree to, in writing, in their mother tongue before being accorded any right to live here, is:
-They must read (or have read to them) the complete Charter of Rights (Canada and Quebec), (in their own language if necessary) and sign a form saying they have read it (or had it read to them in their language) and understood it and understand that it applies to them and to their behavior with respect to the rest of their own family.
-agree to and commit to respect that the law here has precedence over the laws of the country they left, most especially laws enshrined in religion or in the traditions of where they left.
-that the above is perhaps much more protective of women's and children's rights than where they came from needs to be clearly understood.
-that the cost and effort of "preserving their original culture and heritage" is their own to bear and that no person, organization, company or government entity at any level is obliged, nor can be compelled to help them in these pursuits.
-that if they are not content to live by the law here, they are very welcome to exercise their absolutely unimpeded right to leave, including a return to wherever it was that they came from.
-that if they or their immigrating children are found guilty of committing a crime in the 5 years after they arrive, then they are collectively exposed to immediate expulsion to their country of origin regardless of "refugee" claims.
-that they must, at their own cost, all take French and optionally English lessons until reaching a functional reading, writing and oral proficiency allowing them to function autonomously within 2 years of their arrival. Failing which, they will be fined some amount monthly until reaching that level.
If they can't wholeheartedly agree to the above then please have great luck in finding somewhere else to live or in returning home. Next!
The above may sound unfair, tough and impractical, but the consequences over the long term are worse. I would guess that at least 75% of immigrants probably adapt well and willingly.
But they're not the ones who cause any issues or problems after they arrive.
2008-05-17
Bell Canada's last bill
2008-05-13
US Strategic Oil Reserve - Idiotic Senators and House members
2008-05-11
Canada in Afghanistan - stop the puffing
Afghanis have been the serfs of local warlords for millennia. Their hearts and minds are connected directly to their stomach and living for another day.
Canada and allies could build them anything required to cover basic needs, help them with water, farming, education, light industry, commerce and local government.
And a month after Canada and allies leave it will all fall to pieces again. Whatever of value is built up will be plundered or destroyed because the people of Afghanistan do not have the desire or courage as citizens to take and hold their own country.
The tribal mentality of these people is burned-in in a way that would take at least 3 generations to fade. To expect them to convert to a western democracy within 10 years or 20 is foolhardy, wasteful and dangerous.
The real mission in Afghanistan is only to find, arrest or kill Al Queda and then leave. The fate of Afghans is for Afghans to determine. And if they are not determined to take and hold their own government and to hold it against religious or tribal fanatics, then they do not deserve the fruit.
Canadian and allied countries should be burning the poppy fields that fund the Taliban and Al Queda. Every dollar earned for heroin and opium is a dollar being used to kill Canadian and allied soldiers. Put our underemployed CF-118's to work: napalm the poppy fields.
Al Queda is hiding in Pakistan. We need the Pakistanis to step up as well as allow Canadian, American and other allied troops to hunt there. And if they won't do that, they are not allies.
The Canadian military has done us extremely proud in their Afghani mission. The first time that Canadian soldiers have been engaged so hard, so deep, so long and so tough in combat since Korea. Some have paid the ultimate price and their families continue to pay the price.
It is sickening not because soldiers make sacrifices, but that they are doing it for the wrong ends. The goal is Al Queda. NOTHING ELSE.
And if the "average" Afghani won't fight for his own country why should Canadian soldiers?
Some will reply that the Afghan military is being trained and becoming effective in fighting its own battles with the Taliban and Al Queda. I've yet to see anything resembling concrete proof. (A little hint here: CDN or US military press officers are not purveyors of concrete proof).
2008-05-09
Toyota Canada's despicable pricing practices
Hydro-Quebec policy stunts home alternate energy
2008-05-07
Hydro-Quebec needs to do more for customers and itself
- A two-rate tarrif based on average daily consumption. This is aimed at the home with electric heating only. Below 30 kW-h / day, one rate, and for every kW-h/day (on a 2 month average) above that, a higher rate applies. (about 1 cent difference)
- For people with gas, oil or other non grid heating systems that use far less electricity. If the temperature is above -12 degrees, then a fairly low rate applies, and when the temperature is below -12 degrees, then a much higher rate (around 16 c per kW-h) applies. (A temperature sensor on the electric meter switches in the higher rate at lower temperatures).
- Implement time of day metering and billing rates
- Provide a cash incentive for existing oil, gas and electric furnaces to be replaced with thermal storage systems.
Finally! 100% satisfaction with Bell Canada
- $5.95 for "network access" - very creative, Bell.
- $ .19 for 911
- $ .47 for 911 (municipal charge)
- $2.80 for "touch tone" service - 1970 says "Hello"
- $19.28 for a residential line.
- The $5.95 is a simple money grab. I guess Bell copies this from the cell phone world. Frankly I just don't get this one and my only basis to complain about it is that it was never there before...
- The $2.80 for touch-tone services is an insulting profit pad. The days of mechanically switched dialing are long, long, long in the past. The equipment today is the same whether rotary dialed or tone. Bell should be ashamed of themselves for this petty thievery. How many people have rotary phones today? Bell has 13 M landline subscribers pretty much all using touch tone, so this equates to a stunning $500 M per year in profit for something that does not cost any more to operate than 'old' rotary dials.
Social lending in Canada - Cut out the middleman
I have been impatiently waiting for a peer to peer lending service in Canada that will provide person to person lending across Canada. Such services exist in the US, notably www.prosper.com which has many borrowers and lenders.
CBC "expert" and misleading reporting
The CBC had an expert weigh in on the death of a child last week that was due to a poorly handled 911 emergency call over Voice over IP (VOIP). The CBC article stated:
Calls made with VoIP cannot be automatically tracked because there is no physical address linked to the digital signal. As a result, call centre operators must manually reroute the calls to local 911 operators.
Voice over cable. Bye-bye Bell Canada.
(Originally posted 2008.05.04)
With bated breath I await Tuesday the appearance of the Videotron man to install my telephone over cable system. An early adopter of cable modem for the internet and generally pleased with Videotron (generally does not mean perfectly), I finally called them up for the telephone bit.
The Secret. Where credit is due.
Fooled ya. This is really about personal financial habits.
Quebec Anglo
Dear friends,