Comments on: Your Car Would Have to Get 70 MPG to Be as Clean as an Electric Car, Study Finds http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/ Clean Tech News & Views: Solar Energy News. Wind Energy News. EV News. & More. Mon, 29 Dec 2014 10:14:00 +0000 hourly 1 http://wordpress.org/?v=4.0.1 By: Justin http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-145786 Thu, 03 Jan 2013 03:00:00 +0000 http://cleantechnica.com/?p=14710#comment-145786 I thank all power should come from coal, or as much as possible.

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]]> By: Edwin Swanson http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-14182 Tue, 31 Aug 2010 19:25:36 +0000 http://cleantechnica.com/?p=14710#comment-14182 The projected MPG could be drastically different if battery charging could be from other energy sources and conversion technologies.

Example is for a fuel cell with CO or CO2 on one electrode and another electrochemically-appropriate material on the other electrode.

The Hydrogen-Oxygen fuel cell used in the 1970s Apollo space missions had better than 90% electrochemical efficiency, which is far better than the best IC engine with 25% Carnot thermal efficiency. Other electrochemical combinations (either with or without Li-Ion batteries) will have differing chemical efficiency and weight/storage characteristics.

I recommend that readers download the ES&T and further discussed both here and with the authors.

This is great stuff for studying a topic, and promote opportunities for factual dialogue in this often-misused medium.

Again, many thanks to Susan for getting this out to CT readers.

]]> By: Edwin Swanson http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-14181 Tue, 31 Aug 2010 19:03:45 +0000 http://cleantechnica.com/?p=14710#comment-14181 Susan,

Thanks for providing links to the source material for your article.

]]> By: Jon http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-14179 Tue, 31 Aug 2010 17:55:18 +0000 http://cleantechnica.com/?p=14710#comment-14179 Khurt,

No your car can’t get 300 miles on ten gallons. Gasoline is extremely inefficient to refine. You have to deduct the energy required to pull it from the ground, ship it to the refinery, refine it and ship it to the gas station. Hopefully you don’t live by the refinery, as it is most likely the biggest polluter in your town.

You can plug electric cars into outlets and charge them. Soon you will have quick charge stations everywhere and the Tesla Sedan, out in 2012, will get 300 miles on a charge. Bye, bye, ICE! May you rest in peace. Change is always difficult for people…but it is constant and you should accept it.

]]> By: Dirty Sanchez http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-14178 Tue, 31 Aug 2010 17:15:33 +0000 http://cleantechnica.com/?p=14710#comment-14178 My Jetta TDI runs on bio-d I get in the city 42 mpg on average and 52 mpg freeway on average. I can use the oil from the fryers after it has been filtered. And i can fill the air with teh smell of tacos and french fries.

]]> By: Khürt http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-14172 Tue, 31 Aug 2010 12:09:27 +0000 http://cleantechnica.com/?p=14710#comment-14172 Oops. The was supposed to be “my car can go about 300 miles on 10 gallons of gasoline”

]]> By: Khürt http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-14171 Tue, 31 Aug 2010 12:08:00 +0000 http://cleantechnica.com/?p=14710#comment-14171 I want to make sure I understand this. Am I to believe that if we all sucked it up and payed the extra cost for 100% carbon free electricity generation, sucked it up and bought a more expensive electric vehicle (limiting ourselves to short distance driving) – that things would all be much better with the climate?

Perhaps, my “Car Would Have to Get 70 MPG to Be as Clean as an Electric Car”, but my car can almost 400 miles on a 10 gallons of gasoline and I can re-fuel at will.

]]> By: Ben http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-14168 Tue, 31 Aug 2010 05:06:09 +0000 http://cleantechnica.com/?p=14710#comment-14168 I agree with Paul, I think the 70 mpg is a conservative number.

My question is, where do you get the oil to make the gasoline? All the easy oil has been found and now extracting oil is a much more energy intensive process. For example, if your oil comes from Saudi Arabia, Shipped to Texas, then refined, and then shipped back to NY as gasoline, then even before you put that gas into your tank it already has a pretty big carbon footprint.

]]> By: Christof Demont-Heinrich http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-14163 Tue, 31 Aug 2010 02:36:47 +0000 http://cleantechnica.com/?p=14710#comment-14163 And, on top of it all, there’s the beauty of the 100-percent renewable energy powered EV — a reality that more people than you think can realize, including, very soon, yours truly :-)

]]> By: Paul http://cleantechnica.com/2010/08/30/your-car-would-have-to-get-70-mpg-to-be-as-clean-as-an-electric-car-study-finds/#comment-14159 Tue, 31 Aug 2010 00:44:03 +0000 http://cleantechnica.com/?p=14710#comment-14159 Even 70 MPG sounds EXTREMELY conservative. The regular equivalency factor is around 170 MPG

The amount of energy in gasoline that is wasted in an ICE car is staggering. If an EV could carry the same amount of energy contained in a single 20 gallon fuel tank, it could travel over 3400 miles.

For an EV to store as much energy as a 20 Gallon fuel tank it would need a 674 kWh battery, that’s over 12x the size of the battery in the Tesla Roadster and almost 27x that in the Nissan Leaf.

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