PV Gap

Claude Said:

What is the difference between radiant heat energy and solar energy, i sit the same thing?

We Answered:

I think you certainly can compare and contrast fully between solar and radiant heat energy. However, both radiant and solar energy can work together and separately, depending the needs and the application of each system or both at the same time. The following article has provided the clear explanation of how each system works or both systems applied for convenience and efficiency.
http://www.solaradiant.com/thermal/

Dwayne Said:

How did Bedouins use solar energy and other souses of heat energy ?

We Answered:

Actually dried camel dung burns very well.

Gail Said:

Is it feasible to use solar energy to heat up water to power a steam engine, then to produce electricity?

We Answered:

Yes, there are commercial-scale "solar thermal" power plants in operation, that essentially use this principle.

One difference is that an intermediate fluid (not water) is heated by concentrated sunlight, and then this fluid heats water to power a steam engine, to produce electricity.

----.