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Archive for January, 2010

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How long will does it take to make a solar hot water heater?

By on Thursday, January 28th, 2010 | 3 Comments

We’re trying to build a solar hot water heater for a project for our school. We need a rough estimate as to how long it will take to build it. I recently built a Solar Water Heater and can give you some advice. A few hours to 1 day to build an inefficient heater You [...]

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What are the drawbacks to using wind turbines or solar panels for providing all power to a home?

By on Thursday, January 28th, 2010 | 6 Comments

What are the drawbacks to using wind turbines or solar panels for providing all power to a home? A. The wind and sun are not constant, so there would be times when no electricity would be generated. B. The wind and sun are constant, so there would be plenty of electricity for the home. C. [...]

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How can I engineer a system to power an air pump without home electricity available?

By on Friday, January 22nd, 2010 | 2 Comments

I need to run an air pump where there is no electricity from an outlet available… what can i use to power a simple fish tank air pump for about 2 months? a car battery? Solar Power? ect… and how do i set these systems up? If the pump runs on 12V, a car battery [...]

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