Posted by: Johnny P
January 1, 2013 will mark the end of the manufacturing of the 75W incandescent light bulb in the United States as prescribed by The Energy Independence and Security Act of 2007. A year ago, the same law ended the manufacturing of 100W Incandescent light bulbs. If you’d like to read the act entire act, you can find it at Energy Independence and Security Act of 2007, but be warned, it’s over 300 pages of complex language ...
Continue Reading →Posted by: Johnny P
What’s a lumen? A lumen is a measure of the brightness of light given off by a bulb or any other glowing object. I know what your thinking, isn’t a Watt a measure of the brightness of a bulb. We’ll in a round about way it provides us a scale to understand brightness but in fact it’s really the amount of energy that a bulb consumes in an hour. For more on watts and energy check out What is ...
Continue Reading →Posted by: Johnny P
Could a smartphone energy audit help homeowners to reduce their power consumption? This was the focus of a recent International Journal of Sustainable Energy article titled: The application of smartphone technology to economic and environmental analysis of building energy conservation strategies. Wow, that is an amazingly complex way of saying the use of smartphones to perform home energy audits and will it be effective at reducing costs and environmental impacts of energy use. Software apps will be able to look ...
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The Johnny on Energy site contains articles and videos explaingin how solar hot water systems work but when I came across this one, created by Pacific Gas & Electric (PG&E) I thought it was worth sharing. They do a nice job of explaining how solar hot water works and they do it in less than 5 minutes:
For more on solar hot water: Hot Water Solar Heater – details or how they work including videos showing evaculated tubes and ...
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