SFVB4715 All glass Evacuated Solar Collector Tube with Heat Pipe (SOLAR WATER HEATER,ISO9001,SOLAR KEYMARK,CE,SRCC,EN12975)

1.1 Overview

SFVB vaccum tube with heat pipe uses the phase change of the working fluid (the main component is high-purity water) to quickly transfer the heat absorbed by the vacuum tube.

Sunflower's heat pipe(copper) is made of high-purity hollow copper tubes,at one end of the tube is a heat pipe bulb with larger diameter.First seal one end of the copper tube and inject a proper amount of high purity water into the tube.The copper tube is heated at a high temperature, and the air in the copper tube is discharged and sealed, and a vacuum is formed inside the copper tube.The purpose of creating a vacuum in the heat pipe(copper) is to lower the boiling point of the water.At standard atmospheric pressure, the boiling point of water is 100 ° C,but inside the heat pipe(copper) that has been drained, the boiling point of the water will drop to 30 °C.The starting temperature of the heat pipe(copper) is greatly reduced.

1.2 Structure

SFVB consists of a heat pipe(copper), a vacuum tube, aluminum fins and a silicone plug.

1.3 Working Principle

The temperature of the selective absorption layer of the vacuum tube gradually rises under the sunlight, and the heat is quickly transmitted to the heat pipe(copper) through the aluminum fins.When the temperature of the heat pipe(copper) reaches 30 ° C, so when the heat pipe is heated above this temperature the water begins to vaporize (turn to steam). This vapour rapidly rises to the top of the heat pipe and carries with it large amounts of heat,As the heat is off-loaded to the to the cooler liquid circulating through the solar collector header pipe at the bulb (top), the vapour condenses to form a liquid (water) and returns to the bottom of the heat pipe relying on gravity to once again repeat the cycle. like this,the heat absorbed by the vacuum tube is quickly transferred.

2.1 Features

1, high speed and high efficiency on heat transfer 

2, low start-up temperature on heat energy and better resistance against lower temperature ,obvious advantages on performance in low temperature and cold regions

3, the round structure automatically tracks the sunlight, maintains high efficiency throughout the day with stable heat supply

4, no water inside, no scale, which maintains efficient heat exchange for a long time.

5, pressurized type, independent design,the disassembly and assembly does not affect the system operation.

2.2 Specifications

2.3 Size

3.1 Efficiency decay

The non-condensable gas generated at the bulb(top) of heat pipe(copper), will prevent the heat transfer from occurring, thereby attenuating the heat transfer efficiency of the heat pipe(copper).

We use high-purity red copper, together with ultrasonic&high-temperature degreasing cleaning method in the manufacturing process to avoid impurities from being mixed and decomposed to generate non-condensable gases.

Excellent welding and sealing process to maintain long-term high vacuum.

3.2 Working Fluid

The performance of water is stable so water does not decompose under high temperature and high pressure, does not produce non-condensable gases.

High-purity water can prevent the decomposition of impurities and produces non-condensable gases.

3.3 Installation angle

During the heat pipe operation cycle the flow of condensed liquid (water) to the bottom relies on gravity and for this reason heat pipes of this design do not work when horizontal

The installation angle and efficiency of the heat pipe are shown in the figure below. The best installation angle is 30°-60°.

3.4 Antifreeze design

Taper design at the end of the heat pipe(copper), which plays a good role on antifreeze effect on physical structure. The heat pipe will not get failed at a -35 °C ambient temperature.

If the temperature is lower than -35 ° C, we can use a special antifreeze design.Please explain before buying.

Who We are?

Welcome to the website of Jiangsu 1st Sunflower Intelligence Technology Co., Ltd

Since entering the field of manufacture of solar products in 1998, 1st sunflower has accumulated deep expertise, good R&D and production skills in solar products and green environmental friendly products. Therefore, we have excellent product design capabilities to provide customers with fast solutions and after-sale support.

The predecessor of Jiangsu 1st Sunflower Intelligence Technology Co., Ltd is 1st Sunflower Renewable Energy Co., Ltd. We are committed to promoting a low-carbon, natural and healthy lifestyle, and we are committed to providing the most advanced green and sustainable products to our customers around the world.

In the process of continuous development of the company, 1st sunflower continuously improves products according to the regional characteristics and living habits of different countries in order to make the product more concise, more convenient to use, more efficient and less maintenance. At last but not least, reduce energy costs while maintaining comfort and protecting the environment.

Our customers are around the world. In order to adapt our products to different scenes, we have also visited many regions over these years. Our long-term experience has taught us the industry habits and international trade policies of many countries. In addition, we have excellent technical staff and experienced international trade service team, who can provide the quickest response and the most powerful support for the problems you face in the process of our cooperation.

The new 1st sunflower (Jiangsu 1st Sunflower Intelligence Technology Co., Ltd.) aims to provide comprehensive, innovative and sustainable solutions for pollution-free solar products, solar energy utilization, and health & sports, including design, manufacturing and delivery. In addition to our main products, like solar water heaters, solar power systems, solar fans, solar air conditioners etc, we are further extend to the health & sports field, to actively pursue our corporate mission – providing customers with comfortable low-carbon natural health lifestyle.

Our new 1st Sunflower will continue to provide a full range of low carbon, environmentally friendly and natural

products&solutions for individuals, families, businesses and public projects to further meet the market's functional and price needs. We strictly follow international practices and quality standards in product development, design, manufacturing, improvement, product trace ability and service procedures. In addition to providing you with high quality with reasonable price products and solutions, we further provide you with fast and active after-sales support and service.

Feel free to contact us for further cooperation.

Attn: Deo Xu

Https://www.sunflower-solar.com//www.1stsunflower.com
Company: JIANGSU 1ST SUNFLOWER INTELLIGENCE TECHNOLOGY CO., LTD.
Add:NO.1, HONGXI ROAD, NIUTANG INDUSTRIAL DISTRICT, CHANGZHOU, JIANGSU, CHINA
Phone: +008613775232023/+008613584366733
WhatsApp: +8613584366733
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