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Re: Gas or Electric



Thomas,

How about using native landscaping and not mowing (plus conserving water)? 

More directly to your question I urge you to read an article in Environmental Science and Technology, Vol. 34, No. 22, pp. 4789 -4796 by Micheal Overcash, et. al. in which they compare the underlying data and assumptions used in different life cycle assessment models.   They did not look at mowers but did look at power generation by various energy sources.  The papers gives an idea of the tradeoffs and the limitations to our understanding and basic data.  Everyone dealing with LCA type issues should be required to read this article.  You might be able to get the article at:

Link to issue table of contents: http://pubs.acs.org/subscribe/journals/esthag/jtoc.cgi?esthag/34/22
Link to abstract: http://pubs.acs.org/isubscribe/journals/alljournals/jtext.cgi?esthag/34/i22/abs/es991140f
Link to full-text PDF: http://pubs.acs.org/isubscribe/journals/esthag/jtext.cgi?esthag/34/i22/pdf/es991140f
Link to supporting information: http://pubs.acs.org/subscribe/journals/esthag/suppinfo/es991140f/es991140f_s.pdf

These URLs are for subscribers to that Journal.

Gary Miller  

At 11:14 AM 1/9/02 -0600, Thomas Vinson wrote:
Which do you think is better for the environment overall.  A gas mower, or an electric mower. 

While I believe it is electric, a colleague of mine believes that the loss in efficiency due to transfer means that the electric utility company has to burn more fuel to power the mower.  This loss in efficiency could offset the benefit of having a controlled emission.

I suppose it also depends on the fuel at the plant, and wether the mower has a catalytic converter. 

We both agree a push mower is a great alternative, though neither of us will actually get out and use it.   Push mowers also have a "waist" minimization effect.


Tomas Vinson
www.srwm.org

Fax: 512/239-3165
Phone: 512/239-3182

Engineering Specialist
TNRCC - Pollution Prevention
MC112
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tvinson@tnrcc.state.tx.us

Gary D. Miller, Ph.D.
Assistant Director
Waste Management and Research Center
Illinois Department of Natural Resources
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217/333-8942 (phone)
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