Power Tower

Power Towers use a number of heliostats (large sun tracking flat plane mirrors) to focus sunlight onto a central receiver situated on a tower, hence the name. In these systems, a working fluid (generally a high temperature synthetic oil or molten salt) is pumped through the receiver where it is heated to around 550oC. The heated fluid can then be used to generate steam for electricity generation.

Figure 6 Schematic of a power tower Image adapted from Energy Efficiency Renewable Energy Network.
Figure 7 Solar Two, power tower Image courtesy of NREL's Photographic Information Exchange.

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Getting Started With Solar

Getting Started With Solar

Do we really want the one thing that gives us its resources unconditionally to suffer even more than it is suffering now? Nature, is a part of our being from the earliest human days. We respect Nature and it gives us its bounty, but in the recent past greedy money hungry corporations have made us all so destructive, so wasteful.

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