Parrot Safe Driving

Okay, the oil will run out over the years and is very expensive, but certainly an electric vehicle uses less fuel than a heat engine? Not the first time I hear some people asking this question. And I have heard that the electricity is very expensive and therefore make an electric car miles has to be more expensive than with a diesel or gasoline. I'm afraid they are not well informed. The engine performance is the ratio of useful energy (which is transformed into movement and transmitted to the wheels) and the energy supplied (which has been consumed to operate). Energy remains the same magnitude (and is measured in the same units, for example, in the International System, in Joules) comes this to a gallon of gasoline or electricity from an outlet. The performance of an internal combustion engine is between 20% and 45% (20% – 30% if an Otto gasoline engine type, 30% – 45% if a diesel engine). The performance of an electric motor is usually above 75% and it is not unusual electric motors in vehicles that skim 90%. Let's put it another way, when a gasoline-powered car has consumed 8 l/100 km, is only 2 liters (25%) have been used to move the wheels and the other 6 liters have been wasted. This is because in an internal combustion engine is friction losses between components (eg pistons within the cylinders) and generates much heat (which is nothing more than that wasted energy). Instead an electric motor is between twice and three times as efficient as internal combustion engines, ie if extrapolásemos gasoline, that same car would have consumed only 2.67 l/100 km (75% yield). I think it's clear: no color, an electric vehicle consumes less and saves energy. But what about the cost of that energy?, Can I make cheaper electric vehicle kilometers?, We shall see, approximately, with two examples. The Think City is a small urban electric utility, which has a range of between 160 and 200 km. I consider the worst case, that autonomy is left at 160 km, which leaves an approximate consumption of 14.4 kWh/100 km. With the price of kWh to 0.14 euros (I just checked in my latest electricity bill, this year) comes at a cost of 2.38 euro/100 km (and I forgot to add the 18% VAT). A similar car could be a Renault Twingo dCi 75, this is also a small utility, but with a diesel engine, which consumes 3.6 l/100 km (combined consumption). As in the Think City have taken the worst case, to compare on equal terms, let me take the Twingo also the worst case, ie, consumption in city, 4.4 l/100 km. With the current oil price of about 1.31 euros / liter, comes at a cost of 5.76 euro/100 km. It goes considerably more expensive than diesel (something like twice as expensive). But what if instead of charging the electric car for the day, I had recharged at night, on schedule valley (between 22 and 12 hours)? In fact it is best to recharge electric vehicles at night, and slow recharge (for low power demand). Well, the off-peak rate (formerly known as night rate) the price per kWh of 0.061 euros would then and the cost of electricity would euro/100 1.04 km (not I forget the VAT). That is, the fifth (almost one-sixth) than they spend with diesel. Although electricity go up considerably, it is still more economical power [is true that I have not compared the different purchase price of each, much cheaper diesel small utility, in this article talk about amount of energy consumed and cost of that energy]. It is noteworthy that the Government of Spain is considering adopting a new electricity tariff supervalle, on-peak electricity at night (which would be third time slot), which would be the price per kWh somewhat lower rate than the current valley. Let's wait for confirmation. Also do not forget that oil producing countries are having problems to meet global demand and the price per barrel, up $ 100 (USA), seems to have overtones down over the years, if not kept very high, which will drive the price of gasoline and diesel prices will stay high (when they do not rise more). Please enter the code shown in the picture. If next time you want to avoid this control, login above or, if you have not registered, register. I agree with everything you say 'The problem is that we get energy by burning oil, coal .. I would like to know is the performance of these plants to compare and I mean,. Well the answer you in that other post that talks about the different forms of power generation and efficiency. In fact it is always more efficient energy production on a large scale (a central example) that the level of a single vehicle. The plants have large expensive systems to increase performance and special filters to electric bicycle parts minimize contamination, an individual can not afford your car. Therefore, it is cleaner and more efficient to obtain the sum of electricity in a central (fairly efficient) and use an electric motor (very efficient) to obtain energy from petroleum refining (highly inefficient and more polluting). A graphic illustration is to compare the energy obtained from a coal power plant with a steam vehicle traveling (with the same coal). the final touch to convert slow but clear at the source energy (power and transport) to make them more efficient and cleaner, as well as less impact on the environment. perhaps on a smaller scale production, but more localized would be a good starting point, with small plants and adapted to the environment. sounds utopian, but start to consider abandoning the use of fossil fuels. For example, anyone who has a house, you could install photovoltaic solar panels on your roof (and a storage battery) to recharge your electric car (for the day or night) with electricity generated at home so clean. And speaking of collective residential buildings, could also implement renewable energy systems, although it certainly would be a little more complex to implement, but not impossible. Since then new construction, integrated into the building project, it would be feasible. If the thermal power plant has an efficiency of 70% and 80% electric motor (for example) 0.7×0.8 = 56% performance much better than THE BURNING CAR. In fact most modern power plants working with combined power cycle gas-steam has thermal efficiencies of 42% just over 50% in the more more modern, 0.8 x 0.42 = 33.6%, that puts only 3% above gasoline engines more efficient and below nearly all diesel, now need to multiply the above equation for the transport efficiency (hint: in electricity bills when detailing the value of the kilowatt-hour is a little part called TR transport means, there is an idea of ​​the transport losses) for electrical networks is a factor which further reduces the efficiency of electric, well the diesel and gasoline must be transported but also as tanker trucks carry many gallons bn this process is close to unity in terms of efficiency. I really thought and electric vehicles become more efficient only when the power plant that feeds a dam or something that uses the potential energy of water polluter 0, of course only if the dam did not buy thousands of acres filled of trees that clean the atmosphere of greenhouse gases like CO2 (the dam of the Grand Canyon in the USA is an Example for a dam that was not carried hectares of plant and animal life, one of the last in China do not remember the name of the case otherwise), Good for buying an electric if my goals are helping the environment would be doing just what if the power plant provides energy I do not work with fossil fuels, if not then it would pollute more than a vehicle diesel fuel or gasoline. if my goals are to save money on fuel if it is safe because there saving as explained in the post, well that if in contrast to the initial price of the vehicle and if in his life time I return in fuel savings the initial premium. Without going any further, and memory (sorry can not be more specific) a Mitsubishi i-MiEV and costs about 4000-5000 euros less than the Think City, which was one of the pioneers. So between that consume three to four times less energy than conventional cars and electric power is mostly "clean" electric car pollutes less. In this other post I talked about the pollution of electric vehicles, and explain the differences between the various forms of generating electricity. a) cycle charge / discharge: depends on the technology. In the supercapacitors is high. But in the famous lithium batteries, has an output load approx. 80%, discharge the same, leading us to a final yield of 64%. Luckily, instead of comparing the theoretical techniques we can compare the "reality": how many miles I get a car with x liters of diesel, and many other similar causes x kWh. @ Buruburu fully agree to what the article says is true, we would have to go as trams or trolleybuses, ie, engaged at all times to the power grid. Since it is not so, it must take into account the performance of batteries, so they had understood it was about 60%, yes do not know that technology. So electric cars are not as wonderful as the paint. In fact Victor, most unfortunately no technology as wonderful as the paint. Come on, that nothing is perfect, nothing infallible. Neither electric vehicles, or any other technological field. But we can not continue to rely on oil forever to consider, research and development of all other alternatives for mobility and efficiency savings, and among them, electric vehicles. Do not forget also that in a car with internal combustion engine real consumption (in practice) is slightly larger than the approved (the theory). I'm pretty sure that when Javier Costas, an expert in consumer tests, have occasionally carried out in a comparison with Autoblog Future real data (both spent it, while the other spent so many miles on the same road) between a thermal and a electric. The engine performance is not the same at a rate to another. For what I have understood, an electric motor is extremely efficient at low speeds. It has more torque, it has to move gears from 0, when it is still not consume anything, recharged by the brakes (which in a normal car only makes you lose efficiency) .. But at high speeds (and also taking advantage of the inertia of the gears and such) tends to be more efficient an engine, whether diesel or gasoline. In fact this is the reason we are hybrids (plus they have more autonomy). On the road pulling heat in the electric city. Indeed. An electric vehicle has more autonomy in town (slower speeds and more possibility of charging the withholding) and has less autonomy on the road (at high speeds demand more power and the engine uses more energy). Not that I want to loop the loop, but if tubieramos in mind that the government manipulates the prices of what we eat, the price difference would be so great. And finally, it is said that public transport only pay 60%, go for every journey you make with the taxes you pay 40% of the rest of the ticket. Conclusions arrived, if tubieramos to pay what it really public transport worldwide would take the car to be much cheaper. With the theme of electricity I would stay quite the same but with the additional costs of electric vehicles nobody buy it. That if the price is worth one thing has nothing to do with the power consumption of this as public transport or the electric car is several times more effective, because otherwise as are the taxes / subsidies society changes its customs for a greener world, and especially more efficient. Whatever taxes or subsidies may alter the price of a product, in the case of petrol and diesel the main culprit that they are now so expensive is that oil has risen to about $ 124 (which is a price very high). Ideally, to quantify the energy losses of the well to the car, that is, what is lost in refining, storing and distributing gasoline, and what is lost in generating electricity from various sources, taking into account the Spanish electricity mix, the losses distribution, the battery charge, and losses of these. I left wondering how you will see joint (I mean our efforts both supply company, as with the work required in buildings) which users can rate with time-apply for registration of the rate super-valley . Who will be responsible for leaving the plug in your garage? Who will take care of maintenance? Does the company put another counter at home? Will the new digital one wish the same for the other two charges? I have been told that these digital counters fail more than a gun fair.