Basic Info.
Collector Components
Glass Vacuum Tube
Certification
CE, ISO9001, CCC, RoHS, CB, SASO
Transport Package
Wooden Box
Product Description
The vacuum tube is the core of the solar water heater. Its structure is like an elongated thermos bile, with a vacuum between the inner and outer layers. The surface of the inner glass tube is coated with a spectrally selective absorption coating using a special process to absorb solar radiation energy to the maximum. After being irradiated by sunlight, photons hit the coating, and solar energy is converted into heat energy. Water absorbs heat from the outside of the coating, the temperature of the water increases, the density decreases, the hot water moves upward, and the specific cold water drops. Hot water is always located in the upper part, ie the water tank. The temperature rise of hot water in solar water heaters has little to do with the outside temperature, mainly depends on the light. When any faucet in the kitchen or bathroom is turned on, the hot water in the water heater will flow out depending on the natural drop. The larger the drop, the higher the water pressure. There are two main types, one is that water does not run in the tube, and the other is water that runs in the tube. Traditional vacuum tubes are all running in the tube. The introduction of double vacuum and the introduction of "heat pipe in-line" vacuum tubes make the glass tube not go. water. JDSOLAR in-line all-glass vacuum collector solar water heater uses vacuum collector, has high absorption rate and low emissivity, converts absorbed solar radiation into heat energy, utilizes the characteristics of large specific gravity of cold water and small specific gravity of hot water. There is a natural circulation of cold water from top to bottom and hot water from bottom to top, which gradually raises the temperature of the whole water to a certain temperature. Because the vacuum glass tube is round, with the characteristics of natural tracking of the sun's wide source, and the reflection principle of the reflector, the glass tube is fully exposed to light on all sides, the heat collection effect is longer, and the water temperature is higher, even in a cold area It can also operate normally throughout the year.
JDSOLAR balcony wall-mounted solar water heater has beautiful appearance, luxurious and reasonable layout, and is used to solve the problem that the solar water heater can not be stored on the top of the building.
JDSOLAR balcony wall-mounted solar water heater features:
1. Environmental protection automatic operation-good
2. Without any auxiliary water tank-really good
3. The installation is not restricted by the roof structure-really good
4. Visible stitch insertion, convenient and fast-really goodJDSOLAR heat pipe vacuum tube solar water heater is mainly composed of heat pipe, heat absorption plate, glass tube, metal end cover and getter, etc. The use is not restricted by the installation conditions, whether it is for bungalow users or high-rise building users, it can be installed and used .
The glass and metal sealing technology is adopted so that the tube does not run water and is in a completely vacuum state. The copper and aluminum composite strip in the tube is connected to the water tank of the water heater to achieve the purpose of thermal energy transmission.
The heat pipe vacuum tube is a metal heat absorber vacuum tube developed by JDSOLAR, which was put into the market in the mid-1990s. The heat pipe vacuum tube comprehensively applies vacuum technology, heat pipe technology, glass-metal sealing technology and magnetron sputtering coating technology, which not only enables the solar collector to run all year round, but also improves the working temperature, pressure bearing capacity and system reliability Nature, so that solar thermal utilization enters the high-temperature field.
JDSOLAR heat pipe vacuum tube solar water heaters are widely used and are not restricted by installation conditions. It can be installed and used for both bungalow users and high-rise buildings. Gradually become the main brand in the solar industry.
JDSOLAR heat pipe vacuum tube solar water heater structure composition
The external dimensions of JDSOLAR heat pipe vacuum tube are ф100mm × 2000mm, which is mainly composed of heat pipe, heat absorbing plate, glass tube, metal end cap and getter and other components.
The sunlight passes through the glass tube and illuminates the heat-absorbing plate. The high-absorption rate solar selective absorption film converts solar radiation energy into heat energy. The heat absorbed by the heat absorption plate quickly vaporizes a small amount of working fluid in the heat pipe. In order to ensure that the vaporized working fluid quickly rises to the condensation end, the inclination of the vacuum tube and the ground should be greater than 15 degrees. The vaporized working fluid rises to the condensation end of the heat pipe. The heated working medium (water or air) releases the latent heat of vaporization, condenses into a liquid, and flows back to the evaporation end of the heat pipe under the action of gravity. The vapor-liquid phase change circulation process of a small amount of working medium in the heat pipe continuously absorbs the absorbed solar radiation It can be transferred to the condensing end to heat the working medium.The heat pipe as a high-efficiency heat transfer element is composed of an evaporation section and a condensation section. The evaporation section is closely connected with the heat absorption plate. The surface of the heat-absorbing plate is magnetron sputtered with AL-N-AL selective absorption coating, the absorption ratio is greater than 0.93, and the emissivity is less than 0.08. Advanced hot-pressing technology is used for sealing between glass and metal. The borosilicate glass is used for the glass tube, and the transmittance is greater than 0.90. The condensing end of each heat pipe vacuum tube transfers heat to the header through the heat conduction of the heat conduction block. When the heated working medium (water) passes through the header, the heat is taken away. In this working process, the condensing end of the vacuum tube and the heat conduction block are rigidly connected. The heated working fluid does not flow through the vacuum tube, so the installation of the vacuum tube is very simple, and the tube does not interfere with the medium. Even if the vacuum tube is damaged, the work of the solar collector is not interrupted by this. Effectively control the heat loss during operation.JDSOLAR heat pipe vacuum tube solar water heater classification
JDSOLAR heat pipe vacuum tube solar water heater is a new type of solar water heater, and also a solar water heater with the highest thermal efficiency and the most promising. The most important feature of this form of water heater is to install the heat collecting part of sunlight in a vacuum glass tube. The vacuum degree in the glass tube is about 1% Pa, so the vacuum heat insulation can be used to effectively reduce the heat loss of the heat pipe evaporation section to the outside. The scorching temperature in the vacuum tube can reach 250 ºC, and it will not be frozen under the ambient temperature of -25 ºC. Heat pipe vacuum tube solar water heaters can be divided into two types: concentrating and non-concentrating.
Non-concentrating
The non-concentrating type includes two layers of single-layer glass sleeve and double-layer glass vacuum tube:
1. The heat pipe of the single-layer glass sleeve heat pipe collector is located in the heat pipe glass vacuum tube and the heat pipe of the flat type heat pipe solar water heater is similar. There are two ribs welded on both sides of the heat pipe. It is coated with high absorption rate and low infrared emissivity. Selective absorption coating.
2. Double-layer glass vacuum tube heat pipe collector heat pipe is welded with arc-shaped fins, the heat pipe evaporation section is covered with double-layer glass vacuum tube. The outer surface of the inner glass tube is coated with a selective absorption coating as the absorption surface.Spotlight
Compared with the non-concentrating heat pipe vacuum tube solar water heater, the concentrating heat pipe vacuum tube solar water heater adds a concentrator, so its heat collection temperature is higher than the non-concentrating heat pipe vacuum tube solar water heater. The concentrating heat pipe vacuum tube solar water heater Divided into two kinds of outer spotlight and inner spotlight. The external concentrating heat pipe vacuum tube type solar water heater compound parabolic surface light (CPC) is located outside the vacuum glass tube. The sunlight is reflected on the CPC reflective plate and is reflected to converge to the surface of the selective absorption coating. The coating converts the light energy into heat energy It is transferred to the heat pipe, and the heat transfer fluid flows through the water jacket in the condensation section of the heat pipe to take away the heat. The external concentrating heat pipe vacuum tube solar water heater has a higher convergence ratio (the ratio of the area of the opening of the concentrator to the surface area of the heat absorption tube), and the temperature range of the heat collection is 100 ºC -200 ºC. The inner concentrating heat pipe vacuum tube solar water heater is equipped with a compound parabolic reflector in the glass vacuum tube. The concentrating heat pipe vacuum tube solar water heater has a relatively low convergence, and the heat collection temperature range is 80 ° C-120 ° C. Sunlight incident at any angle can be collected on the heat pipe. Therefore, its heat collection temperature is higher than the non-concentrating heat pipe vacuum tube solar water heater.
As the heart of solar water heaters, vacuum tubes will continue to change as the environment changes, because regional differences, differences in target consumer groups, and architectural differences all require solar water heaters to adapt to local conditions, and effectively integrate with buildings.
Structure of JDSOLAR vacuum tube solar water heater
The structure of the all-glass vacuum tube is composed of an inner glass tube, a solar selective absorption coating, a vacuum interlayer, a cover glass tube, a support (spring clip), a getter, and the like.
1. The inner glass tube is used as a water flow pipe;
2. Solar selective absorption coatings such as copper oxide, black nickel, black chromium, black zinc, black copper, etc., are uniformly coated on the outer surface of the inner glass tube by using vacuum deposition, sputtering technology, electrochemical treatment and other processes. To absorb solar radiation energy;
3. Seal the inner glass tube coated with selective coating into the cover glass, and then evacuate the inner and outer glass tubes to form a vacuum interlayer with a vacuum of 0.05Pa to reduce the heat caused by air convection and conduction Loss, which is similar to the principle of thermos;4. The all-glass vacuum heat collecting tube adopts a single-end opening design, which is sealed by an inner and outer tube at one end, and the other end of the inner tube is a closed hemispherical round head, and the spring clip is used to support the round head on the cover glass tube. The inner end of the inner glass tube makes the inner glass tube absorb solar radiation and the temperature rises, the glass round head forms a free end of thermal expansion, thereby buffering the thermal stress caused by the open end of the vacuum collector tube when the water heater is working;
5. After the vacuum tube is heated, the trace gas (mainly water vapor) originally adsorbed on the wall of the tube will be released, which affects the degree of vacuum. The getter and the getter film are used to absorb these released gases. Maintain a high vacuum in the collector tube.
JDSOLAR vacuum tube solar water heater vacuum tube composition
The ordinary all-glass vacuum tube is composed of seven parts:
Outer glass tube, inner glass tube, selective absorption coating. Vacuum interlayer, getter. Suction film, spring clip
JDSOLAR vacuum tube solar water heater vacuum tube product classification
(1) The solar vacuum tubes used in household solar water heaters are divided into 37, 47, 58, 70mm, etc. according to the pipe diameter, and 1.2, 1.5, 1.6, 1.8, 2.1, 2.3m, etc. according to the length
(2) According to the production process, it is divided into: ordinary solar black tube, ordinary blue tube; three high blue tube, three high purple gold tubeJDSOLAR vacuum tube solar water heater vacuum tube product difference
The difference between the three-high "solar core" vacuum tube and the ordinary tube is that the endothermic film layer is different (the endothermic film layer is the key part of the vacuum tube). The third executive tube is an interference film, and the ordinary tube is a graded film. The difference between them is mainly manifested as the difference between an interference film and a graded film.
1. Fundamental difference: The film structure is different, resulting in different principles of absorbing solar rays. The gradient film is a multi-layer film, and its absorption layer is generally 9 layers. It absorbs the solar light layer by layer, and its light absorption performance gradually becomes higher. Due to this gradual structure, the emission ratio increases continuously with the temperature rise, so that when the working temperature is 300 ~ 500 ºC, the emission ratio increases greatly. Moreover, the aluminum ion in the absorption layer is greatly enhanced in activity at high temperature and drifts. In this way, the internal structure of the film layer is disturbed, causing the film layer to begin to age. Under such a high temperature state for a long time, the film layer will fall off, thereby affecting the heat collection efficiency and life of the vacuum tube.
The interference film has a total of two absorption layers. Between the two films, due to the different proportions of metal components, interference occurs, which increases the absorption ratio and decreases the emission ratio. Coupled with the anti-reflection layer to reduce the effect of reflection, thereby achieving a higher absorption ratio and lower emission ratio, greatly improving the heat collection efficiency.
2. Features: The absorption ratio of the three senior executives has been increased by 12%, and the emission ratio has been reduced by 30% -40%. It has superabsorption, less heat loss, and rapid heating. High-efficiency tube, super absorption, high thermal efficiency, rapid heating, under the same light conditions, can produce more hot water with higher water temperature than ordinary tube; Alpine tube, because the emission of copper ions is 0.2% lower than aluminum ions, Therefore, there is very little heat loss, and it can still work normally in the cold environment. The hot water is still available at -30 ºC; the high-temperature special effect tube, because the stainless steel ions in the film layer are resistant to high temperature and resistant to sun, the film layer does not age at 400 ºC. , No attenuation, no color change.
Under the same light conditions, the heat absorption of ordinary tubes is not as high as that of three high tubes, and it can not even meet the requirements of bathing. When the temperature is lower, the heat loss is greater and the heat collection efficiency is reduced, which affects normal use; especially when the air exposure exceeds 270 ºC. The film layer begins to age and fall off, the absorption rate decreases rapidly, and the service life is greatly shortened.
3. Process: high-temperature special effect tube, alpine tube, and high-efficiency tube adopt three-target, double-target, and single-target magnetron sputtering process respectively; ordinary tubes generally adopt single-target magnetron sputtering process.
4. Appearance: A. Nozzle. Here, when the film is sealed at a high temperature above 800 ° C, a part of it is inevitable. The high-temperature special effect tube is only about 1 cm long without a film layer due to high temperature resistance, while the other tube is not resistant to high temperature, and the film layer is about 2.5 cm long. B. Inner tube color: Observed with naked eyes, the inner tube color of high temperature and cold tube is dark red (because the bottom layer of the film is copper); and the high-efficiency tube and ordinary tube are white (because the bottom layer of the film is aluminum).
Many customers are more entangled when purchasing vacuum tube solar water heaters. I do n't know how to buy them. Good quality, especially engineering, because commercial solar water heaters are not only designed to product quality, but also have to consider the future After-sales issues, whether the project is reasonable or not, etc. Today, engineers at Shanghai Jiaogu Solar Technology Co., Ltd. tell you about the major issues that the vacuum tube solar water heater project pays attention to, so that everyone can make a reference for future purchase:
First, the product quality of vacuum tube solar water heaters
The vacuum tube is one of the important parts of the solar water heater. It converts the solar water heater into heat. Therefore, the quality of the solar water heater directly affects the performance of the solar water heater. A good vacuum tube is generally a coating on the glass tube in the vacuum tube. , The color of the coating is generally black, dark blue or dark gray, the color of the good quality coating is uniform, the film layer has no marks, peeling or shedding, and there are no stones or nodules on the glass. The support is placed properly , Not loose.Second, heat collection effect
The high and low heat collection of the vacuum tube solar water heater is an important indicator to measure the performance of the water heater, and also an important factor affecting the heat gain of the water heater. Under the same external conditions, the heat collection of the solar water heater directly affects the water temperature.
Third, after-sales service quality
As we all know, the service life of vacuum tube solar water heaters is more than ten years, and the vacuum tube solar water heaters are exposed to the wind and rain all year round in the open sun and in good conditions, and require professional repair and maintenance. Therefore, we need to find a company that has good product quality and timely after-sales service.
Fourth, thermal insulation effect of thermal insulation water tank
The thermal insulation water tank is the "hot water warehouse" of the vacuum tube solar water heater project. Its quality is directly reflected in the length of the thermal insulation time. A good thermal insulation water tank depends not only on the thickness of the insulation layer but also on the insulation material and process.
Precautions for installation and use of solar water heaters
1. It is recommended that professionals install the water heater installation work;
2. The installation location of the water heater should be flat and there is no obstruction in front;
3. All vacuum tube axes must be kept horizontal on the same plane;
4. The water heater must be installed firmly and stably to avoid the bad phenomena caused by it;
5. The outdoor water pipe should be insulated during installation to prevent the pipeline from freezing in winter and affecting normal use.
Normal use
It is best to clean the vacuum heat collecting tube and the reflecting plate before entering the winter to keep the surface clean to ensure high quality heat collecting effect.
When using the water heater, adjust the water temperature at any time to avoid scalding the skin if the water temperature is too high.
Failure analysis of water heater
Without water, outside water stops
Water pressure is not enough
Pipe joint rupture and fall off
Winter water pipes freeze
No water, no water in the tank
Outflow of water from the nozzle
Winter water pipes freeze
Water pressure is too low when using top water
Sheung Shui for a long time
There is no water in the overflow pipe, the pipeline is leaking
Vacuum tube broken water outflow
The water temperature of the water heater is not high, the weather is not good, and the light is insufficient
· Before and after heat collecting tube
Address:
No. 600, Meiyu Road, Nanxiang Town, Jiading District, Shanghai
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Agriculture & Food, Apparel & Accessories, Arts & Crafts, Auto, Motorcycle Parts & Accessories, Bags, Cases & Boxes, Chemicals, Computer Products, Construction & Decoration, Consumer Electronics, Electrical & Electronics
Management System Certification:
ISO 9001, ISO 9000, ISO 14001, ISO 14000, ISO 20000, OHSAS/ OHSMS 18001, IATF16949, HSE, ISO 14064, QC 080000, GMP, BSCI, BRC, SA 8000, QHSE, HACCP, BS 25999-2, ISO 13485, EICC, ANSI/ESD, SEDEX, ISO 22000, AIB, WRAP, GAP, ASME, ISO 29001, BREEAM, HQE, SHE Audits, IFS, QSR, ISO 50001, LEED, PAS 28000, FSC, ISO 10012, ISO 17025
Company Introduction:
JDSOLAR is mainly engaged in the research and development, production and sales of solar cells, monocrystalline modules, polycrystalline components, double glass components, thin film modules, solar tiles, distributed photovoltaic power generation systems, and independent photovoltaic power generation systems.
JDSOLAR is the world′s leading manufacturer of high performance photovoltaic products for residential, commercial and terrestrial photovoltaic power generation systems. JDSOLAR Jiangsu production base is mainly engaged in research and development, production and sales of solar cells, monocrystalline modules, polycrystalline components, double glass components, thin film modules, solar tiles, distributed photovoltaic power generation systems, and independent photovoltaic power generation systems.
JDSOLAR is the world′s leading manufacturer of high performance photovoltaic products for residential, commercial and terrestrial photovoltaic power generation systems. Utilizing the advantages of existing photovoltaic cell technology, JDSOLAR is committed to providing superior PV modules with high conversion efficiency, high power generation efficiency and high reliability, maximizing the benefits of customers in photovoltaic projects. JDSOLAR has grown into a vertically integrated global photovoltaic leader in silicon, battery, component and power station business. Currently, it has a silicon wafer production capacity of 1.2GW, a battery capacity of 3.5GW and a component capacity of 3.0GW. First-class industry experience, unremitting R&D innovation, dedicated customer service and stable financial position - JDSOLAR is your most reliable long-term partner.
As a photovoltaic high-tech enterprise, JDSOLAR Jiangsu production base has more than 45 core technologies of its main business, and has established an independent national-level photovoltaic laboratory. The laboratory has obtained international CNAS certification and can be carried out according to IEC61215, IEC61730-2 and UL1703. Project testing provides strong support for JDSOLAR design and development and quality control. JDSOLAR products are exported to more than 30 countries and regions in Europe, America, Middle East and Southeast Asia, providing professional and convenient photovoltaic products and technical support for customers.
JDSOLAR related products have passed international certifications such as Tü V, CE, CEC, MCS, RoHS, CQC, PAHs, etc., and have passed ISO14001 environmental management system, ISO9001 quality management system and GB/T28000 occupational health and safety management system certification.
JDSOLAR is based on a systematic and international strategy, from the United Kingdom, Italy to Japan, from Australia to Brazil, in Europe, America, Australia, the Middle East, Africa and other regions have established a comprehensive marketing service network. A passionate sales and technical service team provides solar energy users with comprehensive solutions for clean energy and photovoltaic systems worldwide.
JDSOLAR provides comprehensive energy management and investment services from system design, installation and financing, construction supervision. Photoelectric light and heat products are exported to Vietnam, Myanmar, Thailand, Bangladesh, Singapore, Malaysia, Africa, Middle East and Europe.
JDSOLAR has a special component developed by the company to continuously break through and maintain a world record of 20% photoelectric conversion rate of solar photovoltaic cells; JDSOLAR′s efficient grid-connected inverter and BIPV dedicated inverter application have significantly improved power generation efficiency in industrial and commercial photovoltaic power plants. JDSOLAR′s technical engineers take into account the local climate and geographical conditions in the design and installation process, so that the system has the highest conversion efficiency and maximizes the system′s power generation.
