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Build Your Online Product Catalogs?
| Product Name: |
three target high vacuum tube
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| Supply Ability: |
360000pieces |
| Related proudcts |
vacuum tube, solar water heater, hot water heater, |
| Specifications |
47/58mm*1500/1800mm |
| Price Term: |
FOB,CIF |
| Port of loading: |
shanghai |
| Minimum Order |
10pieces |
| Unit Price: |
1.78-2.53USD/piece |
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Each evacuated tube consist of two glass tubes made from extremely strong borosilicate glass The outer tube is tran***rent allowing light rays to pass through with minimal reflection, The inner tube is coated with a special selective coating (AL-N/AL) which features excellent solar radiation absorption and minimal reflection properties, The top of the two tubes are fused together and the air contained in the ***ce between the two layer of glass is pumped out while exposing the tube to high temperatures, This "evacuation " of the gasses form a vacuum, which is an important factor in the performance of the evacueted tubes
Why a vacuum? As you would know if you have used a glas lined thermos flask, a vacuum is an excellent insulator, This is important because once the evacuated tube absorbs the radiation from the sun and converts it to heat, we don't want to lose it! The vacuum helps to achieve this, The insulation properties are so good that while the inside of the tube may be 150º C / 304oF, the outer tube is cold to touch, This means that evacuated tube water heaters can perform well even in cold weather when flat plate collectors perform poorly due to heat loss (during high Delta-Tconditions) .
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| Company: |
Haining Sanneng Solar Water Heater Co., Ltd
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| Contact: |
Mr. Wang Oswald |
| Address: |
Longlian Industrial Zone, Yuanhua, Haining, Zhejiang, China |
| Postcode: |
314416 |
| Tel: |
0086-573-87881860 |
| Fax: |
0086-573-87882198 |
| E-mail: |
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