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non-pressurized erect-plug solar collector |
 freezing-resist,suitable for temperature from 0℃ to -20℃。 |
| non-pressurized,keep it with water to ensure the tubes can't be damaged. |
| It's with many models for optional.In sunny day,it can produce 55℃ water in 70－130kg/m2 |
| absorptance αs≥90％，low emittance：εh≤8％，daily average heat efficiencyηd≥50％ |
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non-pressurized level-plug solar collector |
| freezing-resist,suitable for temperature from 0℃ to -20℃。 |
| non-pressurized,keep it with water to ensure the tubes can't be damaged. |
| It's with many models for optional.In sunny day,it can produce 55℃ water in 70－130kg/m2 |
| absorptance αs≥90％，low emittance：εh≤8％，daily average heat efficiencyηd≥50％ |
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