Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 5 / 5
Duane Benson
User Rank
Blogger
It's never easy
Duane Benson   8/20/2013 1:51:02 PM
Unfortunately, any advantages of one approach over the other are subtle enough to be difficult to discern. Add that the issue is highly politicized and it becomes even more difficult to tell.

The real issue, in my opinion, is that gasoline holds quite a lot of potential energy by weight and volume. It's got a very high energy density. It's very easy to extract a significant amount of that energy as well. Until there is some way of collecting, storing and using clean and inexpensive energy with roughly the same potential by weight and volume, the economics will be very difficult to justify.

The problem, of course, is that, while it's easy to extract the energy from gasoline, it's not possible to put it back. It's a one way trip into the atmosphere.

As a society, I think we need to be exploring all electric and hybrid vehicles as well as other types of vehicles, but I don't see a solid answer until we can solve the energy density challenge.

chanj0
User Rank
Manager
Green?
chanj0   8/20/2013 1:34:37 PM
NO RATINGS
Green sounds compelling. We assimilate green to vegetable, trees and forest. I can understand "Green" is chosen to be one of the market terms in promoting hybrid and EV. IMO, the movement indeed protect the environment regionally. To be precise, it lows the carbon dioxide emission in your neighborhood. You may feel the air around you fresher if there are enough people driving in your community.

Unfortunately, the reality is we have to see a bigger picture when we are trying to tackle a global situation. Just as the article said, we could make a zero emission vehicle; yet, the manufacturing process emits higher amount of CO2. The report even suggests, in some models, the CO2 emission from operation may not offset that from manufacturing.

What's a better measure to the environment friendliess of any vehicle? Carbon footprint has been one of the most talkable measures. How do we quantify it? What can be done to inform consumers how much carbon footprint the vehicle is?

pinhead1
User Rank
Rookie
Re: State-by-state analysis
pinhead1   8/20/2013 1:33:16 PM
NO RATINGS
It's pretty interesting, but doesn't really lead to a clear conclusion.  It does seem like a conventional hybrid is a safe bet in any state, although it may not be optimal in every state.

junko.yoshida
User Rank
Blogger
State-by-state analysis
junko.yoshida   8/20/2013 1:09:50 PM
NO RATINGS
I think many of us might have already known the answer...but Climate Centra's state-by-state analysis gives us a clear picture on the degree of greenenss of your EV depends on the electricity grid in you state -- how the energy is generated...it's all interconnected.

<<   <   Page 5 / 5


Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Engineer's Bookshelf
Caleb Kraft

The Martian: A Delightful Exploration of Math, Mars & Feces
Caleb Kraft
3 comments
To say that Andy Weir's The Martian is an exploration of math, Mars, and feces is a slight simplification. I doubt that the author would have any complaints, though.

The Engineering Life - Around the Web
Caleb Kraft

Surprise TOQ Teardown at EELive!
Caleb Kraft
Post a comment
This year, for EELive! I had a little surprise that I was quite eager to share. Qualcomm had given us a TOQ smart watch in order to award someone a prize. We were given complete freedom to ...

Design Contests & Competitions
Caleb Kraft

Join The Balancing Act With April's Caption Contest
Caleb Kraft
54 comments
Sometimes it can feel like you're really performing in the big tent when presenting your hardware. This month's caption contest exemplifies this wonderfully.

Engineering Investigations
Caleb Kraft

Frankenstein's Fix: The Winners Announced!
Caleb Kraft
8 comments
The Frankenstein's Fix contest for the Tektronix Scope has finally officially come to an end. We had an incredibly amusing live chat earlier today to announce the winners. However, we ...

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)