[Greenbuilding] low flow shower heads

Richard Garbary richard6 at gmail.com
Thu May 19 08:45:23 PDT 2011


Back in 1985 (til 1996) I lived in a low-rise building with six apartments
and one office in downtown Toronto. It was common to run out of hot water. I
asked the owner if I could replace the shower heads with 2.5 gal. fixtures
and low flow aerators for the all the taps. Total investment was under $100.
We never ran out of hot water again. A few years later the water heater
started to leak. The gas company recommended that 2 100 gallon water heaters
replace the single 40 gallon tank. I told the owner not to go with their
recommendation; he sided with me. I did flow rate tests on the replaced
shower heads. They ranged from a low of 4 gal/min to 6 gal/min. It was an
incredible economic benefit for the landlord in water, energy and
infrastructure savings.



============================================================================================================
On Wed, May 18, 2011 at 4:15 PM, Reuben Deumling <9watts at gmail.com> wrote:

> http://hvo.wr.usgs.gov/volcanowatch/2007/07_02_15.html
>
> "Our studies show that globally, volcanoes on land and under the sea
> release a total of about 200 million tonnes of CO2 annually.
>
> This seems like a huge amount of CO2, but a visit to the U.S. Department
> of Energy's Carbon Dioxide Information Analysis Center (CDIAC) website (
> http://cdiac.ornl.gov/) helps anyone armed with a handheld calculator and
> a high school chemistry text put the volcanic CO2 tally into perspective.
> Because while 200 million tonnes of CO2 is large, the global fossil fuel
> CO2 emissions for 2003 tipped the scales at 26.8 billion tonnes. Thus, not
> only does volcanic CO2 not dwarf that of human activity, it actually
> comprises less than 1 percent of that value."
>
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