The vacuum tube is the core of solar water heater,its structure is similar to an elongated thermos bottle which has vacuum space between inner and outer glass.On the surface of inner glass is coated with spectral selective absorbing painting using a special process for maximum absorption of the solar radiant energy .When the sunshines on the heater,the photons hit the coatings making the solar energy transform into the heat energy.The water absorbs heat from the outer coating to make the water temperature increase and the water density decrease.Hot water moves upward while the proportion of cold water drops.Hot water is always at the top.
Principle of vacuum heating tube
Zijin efficient instant heating tube
A variety of rare material and coating technology (copper target ,stainless steel target , aluminum target ,argon , nitrogen ) are adopted ,Zijin two-way absorbing coatings are applied to the inner tube to improve thermal efficiency through two-way heating .Heat-absorbing efficiency becomes better than ordinary vacuum tubes .The aborption rate of unique second-generation coating Cr-AL-N/Cu is averaged 0.95 plus.
Technology upgrading: the performance is further upgraded by adopting materials of high deposition rate and advanced design techniques.Consequently , the overall performance is significantly enhanced:more high temperature(up to 300℃) , more efficient (heat absorption ratio of 0.95),lower heat loss (as low as 0.04).
Optimized coating design:to absorb multi-band solar radiation by optimizing coating structure to improve integrated absorption of collector tube ; to change the physical structure of the traditional infrared reflective layer by careful design so as to effectively reduce the vacuum radiation heat loss.As a result, the coating adhesion becomes stronger and the density becomes even higher,which improves the anti attenuation effectively of vacuum light.
Please refer to structure of vacuum heating tube as shown.The sun shines through the glass on the heat-absorbing unit.The solar selective absorbing film turns the solar radiation into heat energy.The endothermic heat will quickly vaporize the small amount of mediums and quickly drive them to the end of condensation,which will become condensed fluid after the release of latent heat of vaporization .Then the condensed fluid will flow back into the evaporating part of the heating tube under gravity.In this way ,more and more water is produced under the circulation of vapor-liquid phase change due to less mediums in the heat tube.The vacuum heating tube should be placed at an angle more than 10°with the ground to ensure the condensed fluid can flow back into the evaporating part of the heating tube.
Principle of Solar collector
Technical specification
Manifold casing material
Aluminum/SUS304 stainless steel
Frame material
Aluminum/SUS304 stainless steel
Header pipe material
Copper
Heat pipe material
Copper
Insulation
Rock wool
Rubber seals and rings
UV stabilized high temperature silicone rubber
Test pressure
9 bar
Collector mounting
Flat roof / inclined roof
Mounting angle
15-50
Inlet outlet
3/4”
The heat pipe series of solar collectors are always connected with existing heating supply device . The selective coating on the inner glass of the evacuated tubes converts solar energy into heat energy and transfers heat to the heat pipes by aluminium fins. The liquid in the heat pipe changes into vapour and rises to the condensation end . The heat passes through the heat exchanger into the inner wall of the vacuum tube and then transfers through the copper pipes into the liquid. The transference of heat into the liquid creates a continuous circulation as long as the collector is heated by the sun.
Feature: 1.Workable at water pressure up to 0.6Mpa 2.Possible to be connected with existing energy source. 3.Water tank may not be installed together with the collector. 4.The pipeline is made of copper and conducted by heat transfer medium liquid .The vacuum tube does not take water . The coating is a high strength stainless steel with air flow design, which is furnished in good style. 5.It's possible to withstand high pressure in working condition. 6.Module design ,free combination to meet the demand of large water consumption.
Introduction to pressurized tank
With high pressure resistant design , the water tank adopts SUS304-2B or SUS316L stainless steel and special welding technology ,its thickness is 1.2mm-2.0mm,and directly connected to pressurized water supply is permitted.
Press resistance capability is 6bar , if the pressure exceeds,the exclusively-used P/T valve will be released.
The outer tank material is imported from Korea which is high quality and its thickness is 0.55mm.
The super long and big magnesium stick can protect the tank free of scale.
The long enough exchange stainless steel pipe (16m) assures very high exchanging efficiency in solar system .The outlet of copper adopts special copper, good in sealing performance and easy to install.
Working principles of Split pressurized system
The split pressurized solar water heater is a kind of split pressurized hot-water system of indirect heat exchange and forced bi-circulation. It can be installed on the roofs, walls, balconies and other locations, so as to achieve the perfect combination of solar heat collectors and buildings. The storage tank can be fixed in many places and the insulating tank is equipped with the standard heating device and automatic thermostat.In addition,it is also provided with the enlarged anode magnesium rod.The vacuum tube doesn’t foul and explode,but it can resist pressure, supply hot water in all weathers and automatically run, which represents the development orientation of solar water heater and of which application becomes wider and wider.
When the temperature reaches the set volume,the pump automatically starts to work in circulation.
The circulation pump makes heat-conducting liquid circulate automatically.
The heat-conducting liquid transfers heat to water by the heat exchanger. Structure :
The circulation pump will automatically stop working whenever water temperature is below the set volume.
The electrical heater is standby in case the temperature of the water tank is low.
Collector and storage tank may be placed in separate places . The tank can be placed in any places indoor. And the collector can be put on the inclined roof or flat place !
Module design , free combination , perfectly matches with the building plus automatic digital operation control.
Mini Diagram of Installation
Compact pressurized solar water heater
Audary CPS system model is a new type of pressurized water heater using advanced heat pipe and all glass vauum tube technology. The efficient collector tube heat from sunlight and delivers heat to the condenser . Condenser does not contact water directly . It is through the copper cap to release the vacuum tube and then to make water hot . The available size of the tank ranges from 100L to 300L . It has the following features. 1) High pressured water tank (Testing pressure=9 bar),using SUS304-2B,1.2mm–2.0mm. 2) No outlet is arranged and less heat loss as compared to the non pressured model. 3) Highly efficient heat pipe technology. 4)Vacuum tube does not take water. 5) No sealing rubber is needed and hence no leaking worries. 6) Easy plug-in installation. 7) Freezing resistance. Quality from the details The choice products come from the zero-defect manufacturing processes and the actions of starting from the parts.
Parts are machined with imported CNC lathe to the high precision to ensure product quality.
The materials of the inner tank receive the spectral analysis and test to guarantee the quality of the stainless steel material.
Schematic diagram of Compact pressurized solar heater
Applications: 1.It is applicable in cold climate as it has perfect anti-freezing function. 2.Being pressurized , the unit can be freely installed. 3.It can be installed with the existing heating system such as
gas heater ,oil heater.
Flat type solar water heater
Flat plate solar collector can be applied to split pressure type,compact pressure,non pressure type and also solar project, arbitrary combination.
Technical Specifications: ◎ High quality Copper and Aluminum plate,heater pipe diameter up to 22mm,no welding seam, high intension,and strong pressure resistance.
◎ Coating:black chrome or selective absorption coating , long life,high temperature.
◎ Tempered glass:high thermal conductivity,high insulation ,long life, the thickness of 4mm or 5mm.
◎ Working pressure:≦0.6Mpa.
◎ Aluminum frame : beautiful appearance and corrosion resistance.
◎ Special insulation layer:low heat consumption,high efficiency and nice looks.
Characteristic: 1). The Flat Type Solar Collector is in structure of metal tube plate and features high heat efficiency,high hot water production capacity,
pressurization , anti-insolation , water heated in the copper pipe ,reliable quality,maintenance-free,15-year life.
2). Specification:1 × 2m2 ,1×1.5m2 ,the water temperature rises to 55℃ in cloudless sunny days. Hot water capacity:75-140kg/sqm.
3). Absolute safety and health , no worry of pollution,poisoning,electric shock,explosion and other dangers.
4). Free solar generated hot water brings us significant economic benefits.
5). Automatic unattended operation,stable performance , little maintenance ,long life of up to 20 years.
6). Specifications vary for different size families.
7). To make hot water supply possible on occasions of rain,night and winter.
8). The insulated water tank has a water-storage function for use of water shortage.
9). The solar generated hot water can also be used to do cooking ,drinking water , washing dishes etc, and saves energy and fuel.
Preheat compact pressurized solar water heater
Heat exchanger by copper coil
ModleNo:200L,240L,300L,360L
Working Principle
One copper coil is installed inside the tank as the heat exchanger . When water flows into the
copper coil,it absorbs the heat of the water in the tank via the copper coil therefore the water tank
serves as heat storage tank.
Feature:
1)All time available if need for hot water : The advanced design integrated with high efficiency
preheating patented technique makes water warm up quickly when flowing through special
pipes.Itovercomes the shortcomings of traditional SWH,such as slow heating,long waiting time.
2)Enlarged Capacity : We use a special heat exchanging model to avoid mixing water,so water can
be heated at any time.
3)Strong water pressure: The water pressure from the heater is as strong as tap water and is very
suitable for tired person.
4)Economical and Environmental protecting:clean energy plus green energy.
5)Easy operation: Automatic replenishment and easy operation.
6)Fashionable looks:Fashionable looks and workable with existing equipment.
7)No corrosion or scaling.
Updated version of full-automatic intelligent solar heat -storage tank
Patent Number:ZL 2009 2 0231581.4Imitation is not permitted
It is unnecessary to water repeatedly after the tank is filled up with for the first time
10 advantages of full -automatic intelligent solar heat-storage tank
Patent Number:ZL 2007 2 0182239.0Imitation is not permitted
The hot water comes out when the heater is started.
The tank is always full, completely solving the problem of tube
explosion due to sudden input of cold water.
The hot water is separated from the cold water . In addition to
the hot water in the tank , that in the vacuum tube can be
extruded for use , which can increase hot water by 35% in
comparison with the common heater.
It is equipped with water level gauge of water temperature as
well as the heating function.
Tank A, B and C are integrated to facilitate installation.
Tank C at the end can electrically be heated.It only needs local
heating in the successive rainy days , which can reduce
consumption of power and time.
Heat is collected in different tanks , which can speed up heat collection.
Avoid to be unavailable when the pressure is too low for one more water tank than the common heaters.
Because the water tank and the compensating tank are full all the time, it can resist typhoon up to 10 grade.
It is unnecessary to water repeatedly after the tank is filled up for the first time. As a standard full-automatic machine, it is unnecessarily
controlled.
The usual jointing rossete will easily destroyed because of the oxygenation of the stainless steel material, the damage of the tissue layers. But our technology without jointing , provide the tissue layers from breakage , the life will be longer . The output and input rossete adopt the way of direct plug-in, easier to be installed and maintained, need not be worried after installation.
Artwork of secondary flanging for inner holes
Patent Number: ZL 200620057091.3 Imitation is not permitted
