Innovative solutions for creating healthy, efficient, eco-friendly homes

November 2003

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California Energy Commission Here you'll find A Guide to Photovoltaic System Design and Installation, containing guidelines for residential PV-system installers. Although written for California installers, much of the information is relevant to installers across the United States. Energy Star Suggestions to make homes and business more energy efficient with a list of energy-efficient products.

Optimum Thickness Corrected

Topt = (24 x HDD x F x PWF) Rin x 105(a1 + a2 + a3) and Ropt = Topt x Rin + R0

How Insulation Works

There are three mechanisms by which this heat transport occurs: conduction, convection and radiation (Illustration 1).Conduction is the reason a frying-pan handle gets hot. The handle is not in the flame, but it is attached to the pan, which is in the flame, and the heat is transferred from molecule to molecule up the handle.Convection is the transport of heat by the molecules of a fluid.

Put a Nail in That Window Leak

Did you know a single window can leak $20+ a year in energy costs? It's sad but true. One way to block that leak is with nails. Let me be more specific -- Liquid Nails. The makers of this powerful adhesive now have a new product called Windjammer. Just apply a clear bead between the window frame and the glass for a draft-tight, waterproof seal that doesn't take away from the look of your window like bulky plastic films. After the season, it just peels away without a trace. No caulk gun is needed, and because it peels up, you can also use it to keep doormats or even Christmas lights in place.

The Un-Wired Lifestyle

Multiple computers sharing one printer, family photos stored on a PC shown on a large-screen TV, music files stored on a computer but played through a stereo system, no more waiting to go online until someone else finishes, digital images displayed on any PC in the house showing the view from a wireless camera aimed at the baby's crib or the front door - the possibilities for work, play and security that are offered by wireless networking at home are extensive and expanding rapidly.

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