Freestanding Vacuum Tube Unpressurized Solar Hot Water Heater

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10 set
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10000 set/month

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Introduction of Non-Pressure Solar Water Heater:

Non-pressure Solar Heater is one of the most economical solar water heating device with pretty high efficiency at the same time. It consists of hot water storage tank, solar vacuum tubes with mouth plug in storage tank, and bracket supporting tank and tubes.When cold water in evacuated tubes is heated with solar irradiation, as the specific gravities of hot water and cold water are different, hotter water goes upward to storage tank and colder water goes downward to glass tubes. through this continuous circulation, the cold water in storage tank will be gradually heated till sunset.


Solar water heaters working principle
1. The solar collector absorbs solar energy and transmits it to the solar water heater tank through circulation 
2. When the temperature of the collector reaches the set value, the controller starts the circulation pump automatically
3. The circulation pump makes heat-conducting liquid circulate automatically
4. The heat-conducting liquid transfers heat to water by lower heat exchanger in the water tank. 
5. When the temperature difference between solar collector and heat pipe solar water heaters tank doesn't reach the set value, the circulation pump will be shut automatically 
6. In case the temperature of the water tank does not reach Tmax, Electric Heating Element will start to work automatically


Solar water heaters working station component:
1. Operating screen 
2. Manometer 
3. Pump speed adjust switches 
4. Temperature difference circulation pump 
5. Flow rate indicator 
6. Return circuit connector 
7. Safety valve 

Solar water heaters specification:


solar water heaters

Material of out manifold

0.55mm thickness color steel/ fluorine carbon steel

Material of inner tank

Food grade 2.0 mm thickness SUS304 stainless steel

Tank insulating layer

40mm 45kg/m³ high-density polyurethane foamed

Inlet and outlet hole

Male G1''

Max pressure

0.6 Mpa

Solar collector tube

3.3 Borosilicate glass with N/Al coating

Thickness of glass tube


Vacuum tube tightness

P≤0.005 Pa


as=0.93-0.96 (AM1.5)

Emission ratio

εh=0.04-0.06 (80C±5C)

Idle sunning property parameters


Average heat loss coefficient



2.0mm   thickness aluminum alloy

Tank   weight


Tank   size

560mm Dia   x 1810mm Height

Tank   capacity


Solar   collector

2pcs  58x1800x15tube   solar collector

Absorber   area

2.811 m²

Working   station

SP116 working   station

Heat   exchanger length

Upper:12m,        Underside:18m


Solar water heaters details show:


Freestanding Vacuum Tube Unpressurized Solar Hot Water Heater

Freestanding Vacuum Tube Unpressurized Solar Hot Water Heater

Freestanding Vacuum Tube Unpressurized Solar Hot Water Heater

Benefits of this kind of solar water heaters:

1. Prolong the life of your existing water heater

2.Costs less than an electric, gas or oil water heater

3.No maintenance required

4.Lasts longer than a traditional hot water heater

5.Reduce your water heating costs

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Remaining: 4000 characters

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Q:How to identify the solar water heater is good or bad?
At present, the market has at least 30 solar water heater brands, with the exception of domestic famous enterprises like Beijing Tsinghua Sunshine solar water heater production, there are some fish in the assembly of products and small factory crudely made products.
Q:Solar water heater for Hotel
The solar water heater in the sun but also saving energy, the problem is not the sun, cold weather, rain, is not to use electricity to heat, there is water, solar energy is the natural water pressure, and the pressure of tap water does not match to the addition of water pump
Q:How long do you need to deal with solar water heater in summer?
Because of the high temperature in summer, the vacuum tube solar water heater heat absorption efficiency is very high, if the weather has been very clear temperature is very high, the water heater in less than two days will reach boiling point temperature
Q:How to disassemble solar water heater
Two, the demolition of the best use of detergent or washing powder soaked in water to lubricate the vacuum tube, and the vacuum tube angle should be sent along, avoid cross angle shenglayingche to prevent the vacuum tube burst. After using special polyester foam installed grid vacuum tube removed, put in a special box, to prevent knock in transit. Note: the most important thing is the removal of the vacuum tube, because this step is the most difficult for non professionals who are most dangerous
Q:Solar water heater inside the sediment (stains) how to clean up
Sediment? Is it scale? If it is a scale plus a special scale in addition to the scale of solar scale static appearance like salt, plus after the water, about 1/3 of the water tank, let the water inside the boiling. To the evening to put out on the line, pay attention to put out the water is corrosive can not take a bath or wash your face! Hope to adopt, thank you
Q:Solar water heaters use solar energy or heat?
3, the use of photovoltaic is a photovoltaic power generation, mainly by the photoelectric board (monocrystalline silicon or silicon silicon) will be converted into electricity energy stored in the battery, or directly by the use of electrical appliances
Q:Solar water heater what tube?
The utility model relates to a solar water heater, which is a device for converting solar energy into heat energy, which is used for heating water from low temperature to high temperature, so as to meet the requirement of hot water use in people's life and production. According to the structure of the solar water heater is divided into vacuum tube solar water heater and flat type solar water heater, mainly vacuum tube solar water heater, occupy 95% of the domestic market share. Vacuum tube type solar water heater is composed of a heat collecting pipe, a water storage tank and bracket and other related parts, converting solar energy into heat energy mainly rely on vacuum tube, vacuum tube using the principle of cold water sinking floating, the water circulation and desired hot water.Aluminum plastic pipe is a kind of middle longitudinal welded aluminum pipe, the inner and outer layer of polyethylene plastic and between layers of hot melt adhesive
Q:What are the requirements of domestic solar water heater
Advantages and disadvantages of solar water heater:Advantage:1 high tech products, copper aluminum anode polarization composite plate core or all purple copper core, high surface treatment process, good heat transfer performance, strong absorption capacity, water production;2 the system has good heat preservation performance, large heat storage energy, and the heat preservation water tank has the function of water storage. The utility model can meet the requirement of large quantities of personnel to use hot water, and can also be used as an emergency water source for water supply without water supply;3 solar water heater system for automatic static operation, without special care, no noise, no pollution, no leakage, poisoning, fire danger, safety, environmental protection and energy saving benefits;4 with sewage purification function, clean water pollution;5 vacuum tube solar water heater with good thermal insulation performance, strong frost resistance.
Q:Solar water heater with too long how to clean?
4, and then into the water tank, when the water from the water tank to install a vacuum tube after the outflow of the hole, and then one by one to install the vacuum tube to the water tank, cleaning the scale of the work is completed.5, clean solar water heaters in the water tank should be carried out regularly, generally according to the local water quality situation, do not need frequent cleaning.6, usually should pay attention to the use of solar water heaters, water temperature inside the water tank below 75 degrees, is not easy to produce scale, so the summer or spring and autumn, add water according to the weather conditions, if the sun is good, the water in the water tank should be used with, this temperature will decrease with tap water to avoid filling. The generation of the scale.
Q:Buy solar water heater enough to wash five people how much money
Rainy weather heating and hot water utilization rate is fast, but also greatly reduced after-sales service, both time and energy saving. This type of solar energy than ordinary single warehouse in the absence of the sun heating time is only 20-30 minutes, and a single warehouse needs 2-3 hours!

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