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Spare Vaccum Tube for Solar Water Heater

Item condition:New
Quantity:
3 available
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Price:AU $50.00Buy It NowBuy It NowBuy It Now
Postage:AU $30.00CourierSee more services 

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AU $30.00
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Seller info
macroscience ( 87)
100% Positive feedback
Other item info
Item number:320334202460
Item location:Melbourne, Victoria, Australia
Posts to:Australia
History:2 sold
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 Description Postage and payments
Last updated on 13:00:33 AEST, 04 Jul, 2009 View all revisions
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Spare High Quality Glass Vaccum Tube for Solar Water Heater.

Can be used for small projects and solar energy experiments.

-Diameter 45mm   (4.5cm)
-Lenght 1500 mm  (150 cm)

A、collector

1、Vacuum tube：All-glass evacuated solar collector tubes

⊙ High heat-collecting effciency:The vacuum magnetic- controlled sputtered aluminum-nitrogenaluminum selective absorption coating has a solar absorptance≥0.93,a heat emittance≤6%,a low heat loss,and a good thermal-retention effect.
⊙ Good weather-resistance:It has a good all-year  

 thermal efficiency and is able to withstand the

 front impact by the hail of a diameter below

25mm and a pressure 0.6MPa.
⊙ Long service life:ensures a service life of

 15 years for the evacuated tube.         

◆  Properties of all-glass evacuated solar collector tubes

Item

 

Measured value

 

Specification in Chinese state standard

ptance of the solar selective absorbing coatings

α≥0.931

α≥0.86(AM1.5)

Hemisphere emittance

ε≤0.06

ε≤0.09(80±5℃)

Solar radiance exposure using sun as medium

H≤ 2.639MJ/m2

H≤ 3.8MJ/m2

ation parameter using air as medium

Y≥240m2.℃ /Kw

Y≥175m2.℃ /Kw

Average heat loss coefficient

ULT≤ 0.78W/m2.℃

ULT≤ 0.9W/m2.℃

Inspection welcome

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Questions and answers about this item
 Q: Hi do you have a datasheet for this item Thanks, Andy
A: Hi Andy I have some technical information available under this listing, and that is all I have. I have two tubes to choose 150 cm and 180cm long. Regards Peter
23 Nov, 2009 
Postage and handling
Item location: Melbourne, Victoria, Australia
Posting to: Australia
Quantity:
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Postage and handling
To
Service
Estimated delivery*
AU $30.00
Australia
Courier
Varies
Delivers within 1-3 days after seller ships item
*The estimated delivery time is based on the seller's handling time, the shipping service selected, and when the seller receives cleared payment. Sellers are not responsible for postage service transit times. Transit times may vary, particularly during peak periods.
Postal insurance
Not offered
Return policy
Item must be returned within
Refund will be given as
Return policy details
7 days after the buyer receives it
Money Back
Only if  unused
The buyer is responsible for return shipping costs.

Refunds by law: In Australia, consumers have a legal right to obtain a refund from a business for goods purchased (but not at auction) if the goods are faulty, not fit for purpose or don't match description. More information at returns.

Payment details
Payment methodPreferred/AcceptedBuyer protection on eBay
Credit or debit card through PayPal
Accepted
Personal cheque
Accepted
Bank Deposit
Accepted
Not Available
Seller's payment instructions
Can send anywhere in Australia at buyer expense. You are free to collect from Malvern East, Melbourne.
Seller assumes all responsibility for this listing.
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