Shifting Solutions

Renewable Energy Information

September 3, 2006:  Comparing propane consupmtion to solar gain.

Below is an 8 day plot that compares propane consumption to solar gain.  You can see s slight decrease in the frequency of the propane heater’s run time when the solar storage tank is hottest on 8/31.  It is interesting to see the sudden drop in the temperature of the bottom of the tank (red line) when water is used and cold water is drawn in.  The biggest drops are from showers which consume 10-20 gallons, and the propane kicks in right away for 5 to 10 minutes.  The hotter the solar heated water is the less time the propane runs .  Smaller drops are from the clothes washer and dishwasher etc.

See the entire article at SHIFTING SOLUTIONS LLC , at this site you’ll also find other articles of interest, guides for tax rebates and Government grants, books on sustainable living, green construction and more. Other fun home solar system projects and kits that teach how to build your own solar panels or wind power generators too.

Home solar power for a renewable energy system is a must these days for every home owner, who knows his or hers energy bills are too high and are looking for a means to reduce or even eliminate them.

Tomorrow we continue!


One Response to “Installation of a solar assisted water heating system – part 22”


  1. solar panels Says:

    This can be good information. You need to post it to Reddit.



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