Excerpt from: Velux Solar Water Heating Systems
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| October 16, 2008 | | Energy savings from Solar water heating can be dramatic. | In a previous blog article, we stated that equating the application of solar energy to water heating to increased gas mileage can provide some perspective on the benefits. Recent data on Velux Solar water heaters indicate installations in Denver Colorado can reduce annual energy usage by an average of 79.1 % by utilizing the free energy fom the sun. Applying that savings pecentage to a 22 mpg vehicle, the result would be like getting 105 MPG ! By the way, much discussion has been heard on tankless water heaters as an attrctive energy technology. In fact, tankless heaters still use electricity or fossil fuels and only save the standby losses of existing water heaters, typically saving approximately 20% overall. You can think of eliminating standby losses as shutting off your car when it's idling, but you still need gas to drive with the tankless system. Applying a 20% savings to your same 22 MPG vehicle equates to about 27 MPG. Which would you prefer... 27 MPG or 105 MPG ? | | |
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