Product Details

Super heat pipe vacuum tube for solar water heater

standard :47*1500mm ,58*1800mm,47*1800mm,70*2100mm

Tube structure	All-glass double-tube co-axial structure
Glass material	High borosilicate 3.3 glass
Outer tube size	Φ=47±0.7mm &=1.6±0.15mm, Φ=58±0.7mm &=1.6±0.15mm, Φ=70±0.7mm &=2.0±0.15mm
Inner tube size	Φ=37±0.7mm &=1.6±0.15mm, Φ=47±0.7mm &=1.6±0.15mm, Φ=58±0.7mm &=2.0±0.15mm
Tube length	800mm, 1200mm, 1500mm, 1600mm, 1800mm, 1900mm, 2000mm, 2100mm, etc.
Absorber coating	Coating material	Cu/SS-ALN(H)/SS-ALN(L)/ALN
	Sediment method	Three target magnetron sputtering plating
	Absorptivity	as=0.93 ~ 0.96 (AM1.5)
	Emission ratio	Eh=0.04 ~ 0.06 (80±5 oC)
Vacuum degree	P≤5.0X10-3 Pa
Stagnation temperature	260 ~ 300 oC
Average heat loss	ULT=0.4 ~ 0.6 W/(m2* oC)
Pressure-endure	1.0 Mpa
Hail Resistance	Φ25 mm
Model Number	Tube Size/ MM	Container Loading Quantity (PCS)
		20GP	40GP	40HQ
SN-47/1500	Φ47*1500	4444	8889	10794
SN-47/1800	Φ47*1800	3733	7467	9067
SN-58/1800	Φ58*1800	2625	5250	6375

1 Features

Strong Glass

The tubes are made from a type of glass called Borosilicate, the same base material as used in many Pyrex glass products used in kitchens around the world. Borosilicate glass has the characteristic of being very strong and also has excellent light transparency (>94% ) .

The wall thickness of the glass greatly impacts the strength, longevity and naturally also the cost. Zegna vacuum tubes are custom made to strict requirements that exceed the industry standards, including a 1.6mm thick wall ensuring excellent strength and resilience to hail impact.

To confirm the strength of the tubes, each batch of evacuated tubes assembled in the Zegna factory have randomly selected samples tested by dropping a 30mm / 1.2" diameter steel ball onto the tube from various heights.

Vacuum Insulation

The name "evacuated" is used to describe the process that expels the air from within the space between the tube tubes, forming a vacuum. A vacuum is an excellent insulator against heat loss, and so evacuated tubes are able to operate very efficiently when there is a big difference between the inside of the tube and the outside ambient air. For this reason vacuum tubes are the ideal choice for high temperature hot water applications or locations that get cold in the winter.

Barium Getter

In order to help maintain the vacuum over the 15-20 years life of the vacuum tube, a barium getter "soaks up" any remaining gases in the evacuated chamber plus any fresh gases such as Nitrogen that can slowly permeate through the glass over time, a process known as outgassing. This barium layer also provides a clear visual indication of the vacuum status; the silvercolored barium layer turns white if the vacuum is lost making it easy to identify a fault tube.

Solar Absorber

The absorber coating comprises a base layer of Aluminum on the outside of the inner glass tube followed by thin layer of the dark colored AL/N material. These coatings are applied using a method called DC reactive sputtering which is extremely reliable after having been finetuned over the past 20 years since it was developed, three target selective coating with its special elements and coating method enables high temperature resistance up to 380 °C.

2 Advantages

Comparing with flat panel collector

1. Much more economical for solar water heating application;

2. Higher efficiency with much less heat loss in glass tube;

3. Working all year round even in subzero temperatures;

4. Inexpensive tube and easy to maintenance;

5.More convenient in parts carrying and installation;

3 Our Services

Fast response: Your inquiry will be replied within 24 hours via e-mail or online messenger;

Technical support: You have more than 10 years experience from SANENG SOLAR for product suggestion, installation guidance, market analysis, etc.

OEM & ODM: We welcome OEM & ODM requirements for solar collector, storage tank, installation frame, and even for some outsourcing equipments;

Sample checking: In spite of quality control in production, samples will be selected and installed to check prior to delivery;

Minimum order quantity: We offer sample sample manufacturing for customers to check quality and service;

Shipping service: SANENG company offers to arrange goods shipment to abroad ocean port or inland site, and if necessary to make goods insurance, customs clearance, etc;

Import certificates: SANENG company offers to make Certificate Origin CO, FORM A, FORM E, FORM F, customs certification, etc.

4 Remarks

1.Lead-time: 7-15 working days after receiving payment

2.Payment Term: T/T, L/C, Western Union

3. Warranty: 5 Years for the full system, 15 Years for the vacuum tube, and 1 year for accessories

4. Trade Term: FOB, CFR and CIF

5. Contact: eva he Mobile: (00)86-13511390503 Skype: eva201423