An Overview of One-Sun Solar Thermal Technology
An Overview of One-Sun Solar Thermal Technology
An Overview of One-Sun Solar Thermal Technology
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Passive Systems and Pipe Freeze<br />
Passive systems:<br />
– Currently: pipe freeze limits markets to mild climates<br />
• Cu piping with insulation<br />
– To extend market, must freeze protect piping<br />
• Circulate warm water through the piping<br />
– Heat from auxiliary tank or interior air heat exchanger<br />
• Circulate warm interior air in duct around piping<br />
• Circulate mains water through piping with Freeze Protection Valve (FPV)<br />
– To prevent catastrophe when freeze protection fails:<br />
• Must have freezable piping ⇒ failure/freeze is minor inconvenience<br />
SEET <strong>Solar</strong> <strong>Thermal</strong> Seminar 7/26/07
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