<html>
<body>
I think Jevon's Paradox gets overquoted and overestimated as an
anti-efficiency tactic. While there's no doubt it exists to a degree, I
believe most studies have shown that the increases in usage are not
larger than the gains in efficiency.<br><br>
I know I've read several such articles recently, but can't put my finger
on them. Anyone recall?<br><br>
And I think a major exception cited is televisions, where they've become
more energy-efficient but they've also gotten much larger. But you can
argue that there are two separate factors at work there. Similarly for
refrigerators.<br><br>
David<br>
David Bergman RA LEED AP<br>
<font size=2 color="#808080"><b>DAVID BERGMAN</b> ARCHITECT / <b>FIRE
& WATER</b> LIGHTING + FURNITURE<br>
</font><font color="#808080">architecture . interiors .
</font><font color="#008080">ecodesign</font><font color="#808080"> .
lighting . furniture<br>
</font><font size=2 color="#808080">bergman@cyberg.com
<a href="http://www.cyberg.com/" eudora="autourl"><u>www.cyberg.com</a>
</u></font><font color="#808080"> <br>
</font><font size=2 color="#808080">241 Eldridge Street #3R, New York, NY
10002<br>
</font><font color="#808080">t </font><font size=2 color="#808080">212
475 3106 f 212 677 7291</font><font color="#808080">
<br><br>
author - Sustainable Design: A Critical Guide<br>
blog -
<a href="http://www.ecooptimism.com/" eudora="autourl"><u>
www.EcoOptimism.com</a></u> <br>
adjunct faculty - Parsons The New School for Design</font> <br><br>
<blockquote type=cite class=cite cite="">Time again to remember Jevon's
Paradox: the more efficiently something is used, the more we will
use.<br><br>
Clarke Olsen<br>
clarkeolsendesign.com<br>
373 route 203<br>
Spencertown, NY 12165 <br>
USA<br>
518-392-4640<br>
colsen@taconic.net<br><br>
<br><br>
<br>
On Jul 30, 2012, at 2:07 PM, Paul M. Eldridge wrote:<br><br>
> Hi Reuben,<br>
> <br>
> A few examples come to mind. The tube wireless set that sat on
my<br>
> grandmother's kitchen table would have consumed roughly 50
watts,<br>
> whereas the portable radio on my kitchen counter uses just
1-watt.<br>
> <br>
> My induction hobs are likely twice as efficient in terms of their
heat<br>
> transfer as the coil-type heating elements that would have been used
in<br>
> electric cookers back in the '30s or '40s.<br>
> <br>
> With regards to refrigeration, a 17-cubic foot GE GTH17BBC
refrigerator<br>
> has an EnerGuide rating of 300 kWh per annum. In one of your
papers,<br>
> you tell us that the average refrigerator sold in 1941 (with an
interior<br>
> volume of 6.3 cubic feet), tested according to today's procedures,
would<br>
> consume 350 kWh/year.<br>
> <br>
> The Philips LED lamps in my kitchen produce more light than the
60-watt<br>
> incandescents used by my grandparents and consume just
9.7-watts.<br>
> <br>
> Lastly, I don't know the operating efficiency of my grandparent's
coal<br>
> burning fireplaces, but I can only assume it was extremely low; my
two<br>
> ductless heat pumps have a seasonal operating efficiency of 270 per
cent.<br>
> <br>
> Cheers,<br>
> Paul<br>
> <br>
>> / Reuben Deumling <9watts at gmail.com >
writes:<br>
> />/<br>
> />/ The fact is that in the 1930s and 40s many of our
(US) household<br>
> />>/ appliances were very efficient: water heaters,
refrigerators, kitchen<br>
> />>/ stoves, toilets, etc.<br>
> />>/<br>
> />/<br>
> />/ A lot of appliances are more efficient today.<br>
> /><br>
>> <br>
>> O.K. I'll bite.<br>
>> Name one or two or three.<br>
> <br>
> Sent from my BlackBerry® PlayBook™<br>
>
<a href="http://www.blackberry.com/" eudora="autourl">
www.blackberry.com</a><br>
> <br>
> <br>
> _______________________________________________<br>
> Greenbuilding mailing list<br>
> to Send a Message to the list, use the email address<br>
> Greenbuilding@bioenergylists.org<br>
> <br>
> to UNSUBSCRIBE or Change your List Settings use the web page<br>
>
<a href="http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org" eudora="autourl">
http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org</a>
<br><br>
<br>
_______________________________________________<br>
Greenbuilding mailing list<br>
to Send a Message to the list, use the email address<br>
Greenbuilding@bioenergylists.org<br><br>
to UNSUBSCRIBE or Change your List Settings use the web page<br>
<a href="http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org" eudora="autourl">
http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org</a>
</blockquote></body>
</html>