By Johnny Lupsha, current events writer
Automotive companies such as GM and Volvo plan to simplify gas-powered vehicles by 2036. Meanwhile, Tesla cars have always been electric and startups like Rivian are supplying power to Amazon. Electric vehicles are more energy efficient.
It took a while for them to catch the electric vehicles or EVs. The 2010 Nissan Leaf was the first, if not the first, electric car. Since then, success stories such as the Tesla have given birth to snowstorms, ensuring that there is enough room in the market for gas-powered cars. Many major car manufacturers are now completely excluding gas-powered vehicles. Jaguar recently announced a complete switch to the EV lineup in five years.
Electric cars are often designed to reduce emissions, low carbon footprint and other environmentally friendly uses. However, what about their batteries? In terms of energy efficiency, how does EV accumulate into a fuel engine?
To be continued, and to be continued, and to be continued…
In the video series Energy Science-Resources and Power Explained, Dr. Michael E. Wisssem, Professor of Earth and Planetary Sciences at the University of Washington, St. Louis, explains the interior of electric vehicles.
“The low power demand of electric cars is largely due to the high efficiency of rechargeable batteries,” says Dr. WCC. “For example, lithium-ion batteries have very high power densities. They are more expensive than other batteries, but they can be discharged and recharged thousands of times with just a little efficiency.
According to Dr. Weisses, the Tesla Model S battery pack contains more than 7,000 lithium-ion batteries. It can store 806 megawatts of power and drive more than 250 miles per charge. On the other hand, some EVs are intended for driving around the city. The 2015 Nissan Leaf was released with the same purpose. It can only drive 75 miles per charge.
Word of effectiveness
“By examining the energy efficiency of an electric car, you need to consider not only the efficiency of the batteries but also the source of power,” said Dr. Weiss. “If it supplies coal or nuclear power, you have to reduce the overall efficiency by two-thirds, since coal and nuclear efficiency are only about 35%.
But once you get electricity, the grid for electric cars is about 75% engine efficiency, which is really great.
When it comes to different components, the engine and the car are 90% efficient, the inverter and the charger are 95% each and the battery is 93%. Multiplying them together reaches 75% or more. Is this more efficient than gas-powered cars?
“Electricity is about 93% on average,” says Dr. Weissation. “The efficiency of power plants ranges from about 35% for coal and nuclear to 60% of the combined natural gas cycle. Combined with 75% for an electric car, this gives a total energy efficiency of 24% to 42% or more.
A typical car, on the other hand, consumes about 15% of the fuel in a car.
Even on the worst day of EV, it is more energy efficient than a gas-powered car. This is just one of the many reasons why electric car manufacturers are increasing their products on gas-powered cars. Ordinary cars may be a thing of the past.
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