ALL CATEGORIES

Seller Center
- Product Management
  
  Post Product
  
  Manage Products
  
  Featured Products
- Blog Management
  
  Post Blog Article
  
  Manage Blog Articles
  
  Manage Blog Categories
- Inquiry Management
  
  My Inquiries
  
  Buying Requests
- Analytics Center
  
  Performance Dashboard
  
  Product Analytics
  
  Visitor Analytics
Connect Your Store to WeChat

Follow Our Official Service Account
Manage Products & Inquiries Anywhere
Seller Services

Seller Services

Goldsupplier.com: 20 years of Global Trade Expertise, Empowering Your Business to Go Global!

Join GoldSupplier.com

Free & Instant Registration

Showcase Company & Products

Access Global Buying Requests

Register Now

Activate Verified Supplier Membership

Priority Verified Visibility

Claim Exclusive Buying Requests

Automated Multi-language Store

Verified Now

Launch Your EasyOcean Website

Full-Service Website Management

Google Page 1 Guarantee

Enhanced Brand Credibility

Launch Now
Buyer Services
Post Buying Request

Browse Product Categories

Featured Suppliers
Contact Platform Support

Help Center

Home > Metallurgy, Mineral & Energy > Solar & Renewable Energy > Solar Brackets > Vacuum Tube

Vacuum Tube

Negotiable MOQ: 100000 Pieces (Price negotiable depending on order volume and customization)

Key Specifications

Get Latest Price

Place of Origin:

Beijing, China

Brand Name:

DTL

Type:

Other, Vacuum Solar Collector

Contact Supplier Request Quote Chat Now

Beijing Logon Sci. & Tech. Deve. Co., Ltd.

Payment & Shipping

Payment Methods:

Port of Shipment:

tianjin

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
Contact Us

Place of Origin Beijing, China

Brand Name DTL

Type Other, Vacuum Solar Collector

Specifications

solar vacuum tube is inosculated by two glass tube at one end.inner tube with a selective coating,it can absorb the solar energy

Vacuum tube is inosculated by two glass tube at one end.inner tube with a selective coating, it can absorb the solar energy, prevent heat loss.Underpressure the air to form vacuum between the two tubes , prevent the conduction and convection heat loss.These tubes have high efficiency in the cloudy weather and low temperature conditions.This is because the tube material is glass, therefore the possibility of leakage be reduced to a minimum. Glass vacuum tube have a wide range of uses, including the DC or mixed with the heat pipe. Although the efficiency of the vacuum tube is lower than cryotron, but cheaper.

technical parameter:

Model type	TG47	TG58
Length	1500mm	1800
Outer tube diameter	47mm	58mm
Inner tube diameter	37mm	47mm
Glass thickness	1.5mm	1.5mm
Thermal expansion	3.3x10^-6	3.3x10^-6
Material	3.3	3.3
Absorptive Coating	AL/N/AL	AL/N/AL
Absorption coefficient	>90%	>90%
Emission coefficient	<10%	<10%
Vacuum	P<5x10^-2Pa	P<5x10^-2Pa
Stagnation Temperature	>200oC	>200oC
Net weight	1.20kg	2.23kg