Vacuum Tube Solar Water Heater (Compact Non Pressure System)

 Features:

1) Reliable and efficient with twin-glass solar tubes

2) Easy plug-in installation

3) Outer tank material: stainless steel plate or powder coated color steel sheet

4) Inner tank material: 0.4mm thick SUS304 food grade stainless steel plate

5) frame material: color steel .

6) Superior heat preservation ensured by 50 - 65mm polyurethane foam insulation layer

The Principle of Thermosyphon:

Because of the larger proportion of hot water than cold water, cold water flows downward and hot water goes upward. The water will be heated continuously between water tank and vacuum tube. In other words, hot water 3tubes. Because of the proportion, cold water flows to vacuum tubes from the water tank. The cold water is heated in vacuum tubes.After it becomes hot water, it flows to water tank again. The water circulates constantly between water tank and vacuum tubes; the cold water in water tank will be hotter and hotter. Finally, all cold water will be heated to be hot water. This is the heating course of cold water.

Vacuum Tube Solar Water Heater 

This type of system does not use heat pipes; instead the water is filled into the tubes, which in turn heat the header tank by convection.It has obvious advantages:with a tank itself and the fittings are very low-cost. However, it is less functional, too large to appear roof-integrated, cannot accept pressure system kits.This type is commonly employed in hot countries such as Turkey, Greece, Mediterranean, Africa etc.

The design of this type uses the Thermosyphon principle.

The SFA evacuated tube solar water heating panel is the simplest vacuum tube system available. The stainless steel cylinder at the top of the panel is the well-insulated hot water cylinder - it is double skinned and has two inches of polyurethane foam between the two skins. The stainless steel construction means that it will not corrode, and its simplicity requires no ancillary components. The vacuum tubes are double-skinned, with a vacuum between the two layers of glass. The water in the cylinder is able to enter the central section of each vacuum tube, where it is heated by the sun. The tubes themselves are 93% efficient - so they are able to heat water even in low sunshine or when ambient air temperatures are low. The warmer, less dense water rises into the storage cylinder, displacing cooler water which descends into the tube for heating. 

Solar water heater Feature: 

1)Beautiful in design and very convenient for family use 
2) Reliable and efficient with twin-glass solar tubes 
3) Easy plug-in installation 
4) Outer tank material: stainless steel plate or powder coated color steel sheet 
5) Inner tank material: 0.5mm thick SUS304 food grade stainless steel plate 
6) frame material: Stainless steel / Color steel 
7) Superior heat preservation ensured by 50 - 65mm polyurethane foam insulation layer. Enjoy the hot water in cold evening 
8) No corrosion: It can prevent corrosion lead from chorine ion, sea water, salt water or buck water 
9) No leakage: Apply for special anti-corrosin layer 
10)Sanitary water: The qualities showed above make it possible that water quality is pure and no twice pollution 
11)Designing the  immersion heater hole in advance for the cloudy, snowy, rainy days 

Tube & tank interaction during peak solar radiation conditions.

Scope of Application: 

SFA series Solar water heaters popular in Asia,Africa,torrid zone and warm area.

Notice : 

1) The angle of the frame can be changed in production as the local latitude condition of the customers. We can design the suitable angle for the customers 
2) We offer the spare accessories and tubes for your order for free 
3) We can offer the different material of water tank,frame anf tubes according to your request 
4) We offer the fittings of this system,like immersion heater,water supplier,magnesium and so on.You can buy according to your requirement 

SFA series Solar Water Heaters Package and Size: 

Package: Solar Water tank, Solar Standing frames, Solar tubes are separately packed in one carton. Cartons can be loaded into container directly.  
 

Optional Accessories for SFA series Solar Water Heaters:

Note: Voltage range 110 V ~ 240 V, frequency 50 Hz or 60 Hz, plug can be selected for the specifications of your country.

SFA series Solar water heaters Pictures:

Solar Water Heater for Project use

SFB205818

SFB305818

The advantages of heat pipe !!!

Solar hot water with heat pipe

1.Wash process:
They never have the chemic wash process.So the inside of heat pipe has impurity that will infulence the heat exchange.

2.Structure of the end:
The structure of our tube end is special taper, which can resist freezing. Their end of tube is quite different.

3.Welding method:
We use silver welding between the top and tube body, so the connection part is argent. As they use normal welding, this part is black. Silver welding can make sure the top won't leak air after long time thermal impact.

4.Special liquid:
The liquid inside of the tube is extremely different, but it's difficult to see. Our liquid is patent products, with high efficiency, without poison to people. It can keep the tube working with high efficiency for 15 years. But usually, their liquid has low efficiency and disappear very quick, usually one year later you will find the tube's efficiency has been reduced a lot!
 
5.The outlook:
The sharp of the whole tube(especially the top and the end) is quite different with ours. I will send a picture of heat pipe for you. With the picture, it's easy to express.

SFB series Solar hot water size:

Pressurized Solar hot water for progect use

Thermosyphon Solar Water Heaters are put into cartons firstly.
The samples are loaded into the plywood boxes.

For the FCL goods,cartons can be loaded into the container directly from solar water heater manufacturer.

Sunflower defines an OEM (Original Equipment Manufacturer) as an entity or organization that integrates a customized or embedded Sunflower product in its own unique solution for sale to its customers. The proof of this concept is that the Sunflower product must be significantly transformed. The OEM Partner primarily uses its own company logo and brand name on its solution and it markets, sells and provides technical and warranty support directly to its customers.

Sunflower Renewable Energy Co., Ltd. Buyers from many countries have already done like this. 1st Sunflower Renewable Energy Co., Ltd is a high-tech enterprise and is specializing in research and development of solar products. The company has realized the popularity of green energy and has been sparing no effort to explore the manufacturing and exporting of the green products: Solar water heater, Solar hot water, Solar collector, Flat-Plate Solar Collector, Solar Panel, LED Light,Solar Air conditioner, Solar Fan, Solar Water Pump, Solar Air Heating etc.

We have our own factory specialized in manufacturing Solar Water Heaters and solar renewable energy products. We have established the relationship with customers in different countries. With strong relationships and good credit, we cooperate closely to develop the global markets together.

Payment terms:  T/T, L/C, Paypal, Western union all support

Delivery time:  Sample order 3 working days, Container order 10 working days.

Minimum order quantity :  1 PC

Guarantee period:  3 years

OEM service:   Support (Print logo on carton for free)