Some comments
Here are some of my questions and comments on this page:
- The background seems to have an inappropriate amount of opinion.
- Should the page name be changed to Solar hot water basics, and Solar hot water just link to Template:Tlc.
- User:Chriswaterguy and other admins are currently working on this policy.
- The photovoltaic references in the Energy From The Sun part seem very out of place.
- How is this Appropedia value added over a purely encyclopedic article that would be better placed at Wikipedia? This article should probably focus more on making it happen.
Thank you, --Lonny 19:35, 2 September 2007 (PDT)
Hey, all:
Some notes from a newbie who is not yet BOLD, and doesn't have the HTML/formatting skills to make quick improvements. First, on the technical side, "solar THERMAL energy" is incorrect since it is all sunlight of all wavelengths, and it is converted to infra red heat in the collector and transferred to the water. Collectors are black to absorb as much light as possible for this very reason. A white hose on the lawn has less energy conversion than a black one for this reason. A solar water collector works at the same conversion rate in the coldest weather as it does in hot weather for the same reason. It is not "thermal" until it is converted.
Second, functionally solar water is efficient and easy not for the reasons stated, but because the solar energy is free, i.e., NO FUEL COST. System costs can be very reasonable as well, which leads to....
Third, from a practicality standpoint, it should be stated in an appropriate place that solar domestic water heating systems are among the most cost-effective means of reducing utility and energy costs, and if fossil fuels are otherwise involved, reducing GHG is also cost-effective and direct. For this reason, a solar hot water system is the first thing people should consider purchasing or building. Single-family residences and buildings with <2-3 floors can be fitted with roof-top systems with little complexity due to pipe runs. Moer floors gets more expensive due to piping costs. Properly sized for user demand and sunlight availability, a system can supplant practically 100% of conventional water heating needs.
Fourth, I noticed a batch heater (type with the horizontal tank above the collector) photo at the top of the page and the same one at the bottom.
Fifth, to illustrate the installed extent of solar water, there is a photo of a European apartment rooftop with dozens of collectors. If I can find it, I will see about providing it.
Sorry at this point to appear to be on the sidelines kibitzing, but as I learn I will be able to act more directly to improve things.
David Messages done with sustainable energy, with Wind and Sun! 20:02 9 Aug 2008 CDT