if you know that, this would be great as well:
% of coal power plant emissions that is unburnt fuel
very little, less than 0.1%. That’s what the catalytic converter does.
I’d guess at a coal plant number of less than 1%, any more and it hurts the profits.
Tighten your gas cap.
on my 2 tank 95 f150, i failed the fuel pressure something emission test.
Due to previous owner and the fuel filter, I had to cut the line and stop using the front tank; could that be what causes this? Plus, do they sell or check for this at normal garages or stores, so I don’t waste my one more free test.
http://www.youtube.com/watch?v=Yu_moia-oVI
The youtube video shows you on how to use the gauge on the Schedar valve. Really good watch.
And how expensive is this going to be?
It’s a 2000 Chevy Cavalier
And, yes, engine light is on.
needs a tune up. plugs, wires,cap and rotor. fuel injection or carb? if carb it could need adjustment. if fuel injection pobably the o2 sensor,but could also be, map sensor, maf sensor or egr valve. what kind of car will help me answer better.
How is this calculated and why is bio diesel so popular?
CO2 emissions are very similar to emissions from petrodiesel. The difference is, this is carbon that’s extracted from something that was alive recently, generally a plant (it is possible to make biodiesel from animal fat, but that is not done). Plants absorb CO2 from the air, so when you burn biodiesel you are re-releasing CO2 that was in the air during the plant’s life. The long term effects on CO2 are very different from petrodiesel, which releases CO2 that was in the atmosphere millions of years ago.
The #1 adjustment anyone can make to a car to reduce fossil fuel use is to have it transport vegetables only from the supermarket and no meat or dairy, both of which are responsible for 51% of all greenhouse gases, according to the WorldWatch Institute.
Apart from this one very significant adjustment, you can keep tires inflated, make sure a car is washed and waxed, accelerate and decelerate slowly, use cruise control on the highway, and drive at or under the speed limit, all of which will reduce fuel use.
My van failed emissions today, says that the fuel tank is losing pressure. EVAP test over cutpoint is what it says. measured .67 limit is .40. What causes this?
The fuel cap was tested on and off. Fuel cap is not problem. This is CALIFORNIA By the way. lol
there is a line that runs from the fuel tank to the engine bay that goes to the charcoal canister, it may be severed this is where the pressure comes from.
a. The process which provides electrical current in a fuel cell is the direct combining of a molecule of oxygen and two molecules of hydrogen to form two molecules of water.
b. A fuel cell is very like a lead-acid battery: energy is stored initially as chemical energy; and the total electrical energy able to be generated depends on the size of the electrodes.
c. fuel cells have no greenhouse gas emissions or other pollutants in their operation, and they are highly reliable.
d. Fuel cells are only able to operate on small scales; it is not practical to make large-scale fuel cells capable of generating tens of kW.
e. The fuel cell can only be charged by running electricity through it in the opposite direction in order to form hydrogen and oxygen; then hydrogen and oxygen provide fuel for the cell to produce electricity.
I would decide between ans b) and d) but if you need to choose one, I would think that it’ll be b) because you were asked about the features and solution b) has provided many features of a fuel cell in the answer.
I’m not really sure but you can take this answer as a reference…I’m kinda sucky at Chemistry. sorry:(
According to Wikipedia, Jevons Paradox states that "as technological improvements increase the efficiency with which a resource is used, total consumption of that resource tends to increase, rather than decrease." From what I read, the Paradox does not apply to all resources, but I was wondering if it applies to gasoline (especially in developing countries where the price elasticity of fuel tends to be higher). Also, if fuel efficient cars increase fuel consumption, is there a pro-environment justification for increasing fuel efficiency without curbing emissions per gallon of gasoline?
Correction: I meant to say that in developing countries the price elasticity of personal transportation (cars, motorcycles, etc.) tends to be higher.
If you make cars and you indroduce a technological improvement to one process, this department will get a cheaper output and the price of the product will eventually decrease. The consumption of that resource will be limited by other inputs and Jevons Paradox will not apply.
It´s true that general technological improvements decrease costs and prices and if elasticity is greater that 1, people will buy more goods. A general technological improvement involves all parts of the car, not only engines or wheels or electronic systems and from a social, mankind point of view, the way roads are made can be also considered. An improvement in roads engineering will eventually decrease total social costs of transportation.
What governments do to avoid an increase in consumption is to charge taxes on petrols and cars. The difference between prices of cars and fuel in different countries obey to different taxes charged. In some countries highways are private and you have to pay an amount of money to use them.
An environmental reason is always present to discourage the use of cars.
if you know that, this would be great as well:
% of coal power plant emissions that is unburnt fuel
It really depends upon whether the engine is burning a ‘rich’ or a ‘weak’ mixture of petrol and air. A mixture about 10% rich in fuel gives the most power, whilst the most efficient running occurs with a weak mixture. Unburnt fuel in the form of carbon monoxide occurs in either case but with a weak mixture there is very little CO; a rich mixture, on the other hand, can give rise to as much as 3% unburnt CO.