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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Is there a Freeze-tolerant Piping?<br />
• Polybutylene:<br />
• PEX?<br />
• Great freeze tolerance (withstood >700 freeze-thaw cycles)<br />
• Withdrawn from market ~1992<br />
Probable reason: Brass/copper fittings attack the material<br />
• Some manufactures/web sites claim “freeze tolerance”<br />
• No documentation<br />
Goal: determine freeze-tolerance <strong>of</strong> PEX<br />
SEET <strong>Solar</strong> <strong>Thermal</strong> Seminar 7/26/07