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    pressurized solar water heater

    pressurized solar water heater



    Pressured solar water heater system also known as a whole unify system.Typically these systems will function by natural convection or heat pipes to transfer the heat energy from the collector to the tank,there will be no water going through the vacuum tubes,and if one tube broken, it will not affect the whole system, this system has a much better water pressure than the compact non-pressured one.


    Solar water heater is water heated by the use of solar energy. Its system may use electricity for pumping the fluid, and have a reservoir or tank for heat storage and subsequent use.


    Solar collector is a solar collector designed to collect heat by absorbing sunlight. The term is applied to solar hot water panels, but may also be used to denote more complex installations such as solar parabolic, solar trough and solar towers.




    Type Evacuated Tube
    Pressure pressurized
    Circulation Type Indirect / Open Loop (Active)
    Heating System Thermosyphon (Passive)
    Connection Type Direct-Plug
    Certification CE, Solar Keymark
    Model Number TZ58/1800-15E,20E,24E,30E
    Recommend region Asia, Africa, Latin America, South Europe


    Key Points:


    good water quality
    It use tap water directly, live water but not sedimentary water.   


    pressure endurance
    The thick of coil is 0.8mm, which can withstand 6-12 bar.



    working automatically
    A feed tank on the top, it will supply water automatically. What you need is just to open tap and have a wash.


    no scale, high efficiency
    Water in the tank wouldn't be used just to heat the coil, the water in the tank will keep hot and no scale. The vacuum tubes will be kept clean, and system has a higher efficiency than normal system.


    simple structure                                                                                                                                                    
    Total 3 valves in whole system only, very simple and safety, maintenance free.



    anti-freezing
    Because of all hot water in main tank, the feed tank won't be frozen. It can be working well in -10deg.C. - good performance in rainy & cloudy days
    When tap water comes in and out, it will be just 3deg.C less than water in tank. Viz. if 90deg.C in tank, the outlet water will be at 87deg.C after exchanging.
    If tank water is 90deg.C, and you catch rainy days, no problem, if you use 50L 40deg.C water per day, you can keep getting such hot water for 15 days!!
    The electric heater is only backup, we don't use it anytime practically, except in winter.


    more capacity    




    Because the water in tank doesn't be used, in fact the circulation is not only water in the tank but also water in the tube. So for example 300L, actually it has 400L in whole system.

                            

    Principle


    The vacuum tubes absorb the sun’s rays and turn the rays into energy, heating the water in the tubes. As the temperature of the water is rising, The density turns slightly, then the hot water in the tubes floats into the tank, and the cold water in the tank goes down to the tubes. Keeping natural cycling like this, the water in the tank will be heated.
    The vacuum tubes heat the water in the tank, but the users do not use the water in it directly. The cold water comes into the exchanger from one side and the hot water heated by the exchanger, and then the hot water comes out from the other side for use.                                



    The Solar Water heater tank is a non-pressurized tank, and has an opening to the ambient atmosphere. Solar water heater tank should always be filled with water to avoid damage caused by dry high temperature working conditions. The stainless steel our use belong to food grade, and SUS 304 & SUS 316 have better corrosion resistance.    




    Thermal Performance


    The system passes over thermal performance test according to EN12976-2:2006-chapter 5.8, parts of the test conditions are listed below:


                              

                                                                                                                                    



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