Solar Water Heater Vacuum Tube
Product Details
(1) Inner glass tube diameter is 37mm, Outer glass tube diameter is 47mm.
(2) Tubes length is 1.5m.
(3) The material used for the all-glass evacuated tubes is borosilicate glass 3.3, which has a thermal expansion coefficient of 3.3 0-6 K-1.
(4) The selective absorbing surface is graded aluminum-nitrogen-carbon on an aluminum base layer (Al-N-C). The absorbance is up to 0.94(M1.5), and the emittance is around 0.07-0.08(at 80oC).
(5) The 5x10-3 Pa vacuum effectively inhibits out-gassing from the glass, and provides a high degree of insulation preventing convective heat loss from the inner tube.
Vacuum Tube Specifications:
- Country:China (Mainland)
- telephone:86-518-85311117,85310699
| Payment Terms: | T/T |
| Port: | lianyungang |
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