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Quick Details

  • Type: Evacuated Tube
  • Pressure: Pressurized
  • Circulation Type: Indirect / Closed Loop (Active)
  • Connection Type: Heat Pipe Solar Collector
  • Installation: Freestanding
  • Housing Material: Aluminum
  • Certification: Solar Keymark, SRCC,En12975, OG100,CE,ISO9001:2008
  • Capacity: 500
  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: Sunwe/OEM
  • Model Number: S01
  • Separate Pressurized Solar Water Heater: ( with heat pipe solar collector)
  • Solar collector tube size: 58/1800
  • Solar tank capacity: 150L - 1000L

Packaging & Delivery

Packaging Details Cartons with OEM logo
Delivery Time 7 to 10 days

 

 

TypeVertical Pressurized Solar Water Heater Tank
Capacity150L200L250L300L400L500L700L1000L
Inner tankSUS304 2B
δ1.2φ360
SUS304 2B
δ1.5φ450
SUS304 2B
δ1.5φ480
SUS304 2B
δ1.5φ480
SUS304 2B
δ2.0φ580
SUS304 2B
δ2.0φ580
SUS304 2B
δ2.0φ580
SUS304 2B
δ2.5φ800
Outer tankColor Steel
δ0.5φ470
Color Steel
δ0.5φ550
Color Steel
δ0.5φ580
Color Steel
δ0.5φ580
Color Steel
δ0.5φ700
Color Steel
δ0.5φ700
Color Steel
δ0.5φ700
Color Steel
δ0.5φ1000
PU Foam Insulation55mm50mm50mm50mm60mm60mm60mm100mm
Coil heat exchangerCopper coil φ12/Stainless steel φ15.88/Flexible pipe φ19
Working PressureSuggest 2bars to 6bars
P/T ValveRelease when pressure is over 7bars or tempertuare is over 95 °C
Electric booster1.5KW 220V or 2KW 220V normally
Suitable people3persons4persons5persons6persons8persons10persons14persons20persons

  

 

Type

C01-10

C01-15

C01-20

C01-25

C01-30

C01-15B

C01-30B

Number of tubes

10

15

20

25

30

15

30

Gross area (m²)

1.63

2.40

3.17

3.93

4.70

1.33

2.42

Aperture area (m²)

0.94

1.41

1.88

2.35

2.82

0.63

1.30

Absorber area (m²)

0.805

1.24

1.65

2.06

2.48

0.54

1.08

Peak power (W / Collector)

659

900

1199

1499

1799

450

900

Allowable operating pressure (bar)

6

6

6

6

6

6

6

Test pressure (bar)

10

10

10

10

10

10

10

Max. stagnation temperature

232°C

200°C

200°C

200°C

200°C

200°C

200°C

Max. operating temperature

95°C

95°C

95°C

95°C

95°C

95°C

95°C

Flow rate (l / m2h)

50-150

50-150

50-150

50-150

50-150

50-150

50-150

Absorber material

CU/AI/SS/N2 Borosilicate glass

Coating

ALN/SS-ALN/CU

Absorption coefficient

 94%

 94%

 94%

 94%

 94%

 94%

 94%

Emission coefficient

 7%

 7%

 7%

 7%

 7%

 7%

 7%

Weight (kg)

36.4

55

77

96

116

32

65

Liquid content

0.62L

0.93L

1.24L

1.55L

1.82L

0.93L

1.82L

Mounting angle

15 - 75°

15 - 75°

15 - 75°

15 - 75°

15 - 75°

15 - 75°

15 - 75°

Frame

2mm Aluminum Alloy

Heat pipe

8mm red copper

Long-term stable vacuum (Pa)

<5*10-3

<5*10-3

<5*10-3

<5*10-3

<5*10-3

<5*10-3

<5*10-3

Glass tube diameter

58mm

58mm

58mm

58mm

58mm

58mm

58mm

Vacuum tube wall thickness

1.6mm

1.6mm

1.6mm

1.6mm

1.6mm

1.6mm

1.6mm

Insulation

Compressed Rockwool

Collector width

800mm

1175mm

1550mm

1925mm

2300mm

1175mm

2300mm

Collector length

2043mm

1200mm

Manifold

38mm red copper

Tube length

1800mm

850mm

Pressure drop

<5mbar(80L/h), 12mbar (150L/h)

 

 

 

 Sunwe Solar water heating (SWH) or solar hot water (SHW) systems comprise several innovations and many mature renewable energy technologies that have been well established for many years. Solar water heater has been widely used in Germany, Austria, France, Poland, Finland, Russia, America, South Africa, Greece, Turkey, Australia, and China.

 

In a Separate Pressurized Solar Water Heater system the storage tank is ground or floor mounted and is below the level of the collectors; A circulating pump moves water or heat transfer fluid between the tank and the collectors.

 

Solar water heater systems are designed to deliver hot water for most of the year. However, in winter there sometimes may not be sufficient solar heat gain to deliver sufficient hot water. In this case a gas or electric booster is normally used to heat the water.

 

 

 

FAQ                                                                                                                 

 

QuestionWhat is solar water heater?
AnswerSolar water heater or solar hot water systems comprise several innovations and many mature renewable energy technologies that have been well established for many years. Solar water heater has been widely used in Australia, Austria, China, Cyprus, Greece, India, Israel, Japan, Jordan, Spain and Turkey.
QuestionWhat is separate pressurized solar water heater?
AnswerIn a Sunwe "separate pressurized solar water heater" system the storage tank is ground- or floor-mounted and is below the level of the collectors; a circulating pump moves water or heat transfer fluid between the tank and the collectors.
QuestionIs Sunwe solar water heater usable in winter?
AnswerSunwe solar water heater systems are designed to deliver hot water for most of the year. However, in winter there sometimes may not be sufficient solar heat gain to deliver sufficient hot water. In this case a gas or electric booster is used to heat the water.
QuestionWhat is a heat-pipe?
AnswerHeat Pipe: An evacuated rod or pipe used for heat transfer.
QuestionWhat is Insolation?
AnswerInsolation: Don't confuse this with insulation - the one letter change makes a big difference. Insolation refers to the amount of sunlight falling on the earth.
QuestionWhat is Insulation?
AnswerInsulation: The ability to protect against transfer of heat/cold. Solar collectors use compressed glass wool or polyurethane insulation to insulate the header from heat loss. Glass wool has excellent insulation properties, is very light and can withstand high temperatures, making it an ideal choice for a solar collector. It is made from a least 80% old glass bottles and can be recycled so is very environmentally friendly.
QuestionWhat is Irradance?
AnswerIrridance, Irridation: Basically the same as Insolation
QuestionWhat is IAM?
AnswerIncidence Angle Modifier (IAM): refers to the change in performance as the sun's angle in relation to the collector surface changes. Perpendicular to the collector (usually midday) is expressed as 0', with negative and positive angles in the morning and afternoon respectively. Collectors with a flat absorber surface, only have 100% efficiency at midday (0'), whereas solar tubes provide peak efficiency mid morning and mid afternoon, at around 40' from perpendicular. This results in good stable heat output for most of the day. What is the Aperture? The part of the collector through which light enters. For evacuated tubes this refers to the cross-sectional surface area of the outer clear glass tube measured using the internal diameter, not the outside diameter.(Eg. 0.0548m x 1.72m = 0.094m2). 1.72m is the exposed length of the evacuated tube.
QuestionWhat is Absorber?
AnswerAbsorber: The part of the collector that actively absorbs the light rays. For solar tubes this is defined as the cross-sectional area of the inner tube (selective coated) measured using the outside diameter. (Eg. 0.047 x 1.72m = 0.08m2) This value is used when calculating efficiency values. For solar tube collectors with reflective panels, the entire circumferential surface area of the inner tube is often used when calculating absorber area, as the reflective panel is supposed to reflect light onto underside of the evacuated tube.
QuestionAre Vacuum Tube Collectors Better than Flat Plate?
AnswerFlat plate thermal solar collectors have been in use for several decades, but only in relatively small numbers, particularly in Western countries. Evacuated tubes have also been in use for more than 20 years, but have been much more expensive than flat plate, and therefore only chosen for high temperature applications or by those with money.In recent years the production volume of evacuated tubes has exploded, resulting in greatly lower manufacturing and material costs. The result is that evacuated tubes are now similar in price to flat plate, but with the insulating benefits of the evacuated tube, they are set to become the default choice for thermal solar applications worldwide.
QuestionIs solar water heating a viable alternative to gas or electricity?
AnswerSolar should not be seen as an alternative to gas or electricity, but rather a supplement. Solar cannot totally replace the need for gas or electric heating as there are sometimes days when there is little sunlight. When averaged over a year, a correctly sized solar system can provide 60%-70% of a household's hot water needs. Providing more than this is unadvisable, as too much heat will be produced in the summer. The hot water system can easily be automated, so hot water is guaranteed regardless of sunlight levels.
QuestionHow long will it take to recoup my investment?
AnswerSolar collectors are much more affordable than many other solar hot water heaters. For a household of 4, the price of a full system may not be too much more than a new electric or gas system. Depending on your location (solar levels) and current hot water usage the annual electricity or gas saving will differ. However in a normal household that spends 25% of its electricity bill on hot water heating, the full cost of the purchase may be recouped as quickly as 4-5 years in reduced bills. You will definitely make considerable savings during the life of the solar hot water heater.
QuestionCan solar collectors be used in cold conditions?
AnswerYes. collectors can be used in temperatures as low as -30'C, although performance is greatly reduced in such extreme conditions. Good heat output is still achieved in mild sub-zero conditions.
QuestionWhat is Flow Rate?
AnswerFlow Rate: The volume of water flowing through plumbing in a given period of time. Usually measured in volume/minute or volume/hour. 1 Litre/min
QuestionWhat is the gross area of a solar collector?
AnswerThe total surface area of the collector including the frame, manifold and absorber. This area is often used when comparing collectors, but a better comparison to use is value for money. Roof size is not usually a limiting factor for domestic solar water heating installations, so the size of the collector is not really that important.
QuestionWhat happens if one of the solar tubes is broken?
AnswerFirstly, tubes are very strong and not easily broken, but if the worst should happen, solar tubes can be replaced very easily. They are inexpensive and available though The Solar Shop. The solar collectors can operate with several broken tubes, but the efficiency will be reduced, so it is recommended that broken tubes be replaced immediately.
QuestionWill water be heated on a cloudy day?
AnswerAlthough the heat output of the solar collector is reduced on overcast days, it will still be able to provide heating. If it is a heavily clouded day or raining, then more gas or electric boosting may be required to maintain water at the required temperature. This system will be automated so you don't have to worry about running out of hot water on a rainy day.
QuestionCan I use a solar collector with my existing hot water system?
AnswerNormally yes. But it depends on your existing system.
QuestionAre the solar collectors noticeable on the roof?
AnswerIf only the collector is mounted on the roof it should blend into the roof design quite well. Our solar collectors are very thin and can be flush mounted on a roof. From a distance they look somewhat like a skylight. You may have to check with your local council regarding building restrictions when installing your solar collector. Can solar collectors be mounted on a flat surface
QuestionWhat is the benefits of solar water heating?
AnswerHot water throughout the year: the system works all year round, though you'll need to heat the water further with a boiler or immersion heater during the winter months. Cut your bills: sunlight is free, so once you've paid for the initial installation your hot water costs will be reduced. Cut your carbon footprint: solar hot water is a green, renewable heating system and can reduce your carbon dioxide emissions.
QuestionWhat is solar water heaters?
AnswerSolar water heaters—also called solar domestic hot water systems—can be a cost-effective way to generate hot water for your home. They can be used in any climate, and the fuel they use—sunshine—is free.
QuestionWhat is indirect or closed loop solar water heater systems?
AnswerIndirect or closed loop solar water heater systems use a heat exchanger that separates the potable water from the fluid, known as the "heat-transfer fluid" (HTF), that circulates through the collector. The two most common HTFs are water and an antifreeze/water mix that typically uses non-toxic propylene glycol. After being heated in the panels, the HTF travels to the heat exchanger, where its heat is transferred to the potable water. Though slightly more expensive, indirect systems offer freeze protection and typically offer overheat protection as well
QuestionOverheat protection?
AnswerWhen no hot water has been used for a day or two, the fluid in the collectors and storage can reach very high temperatures in all systems except for those of the drainback variety. When the storage tank in a drainback system reaches its desired temperature, the pumps are shut off, putting an end to the heating process and thus preventing the storage tank from overheating. One method of providing over heat protection is to dump the heat into a hot tub. Some active systems deliberately cool the water in the storage tank by circulating hot water through the collector at times when there is little sunlight or at night, causing increased heat loss. This is particularly ineffective in systems that use evacuated tube collectors, due to their superior insulation. No matter the collector type, however, they can still overheat and ultimately rely on the operation of temperature and pressure relief valves.
QuestionFreeze protection?
AnswerFreeze protection measures prevent damage to the system due to the expansion of freezing transfer fluid. Drainback systems drain the transfer fluid from the system when the pump stops. Many indirect systems use antifreeze (e.g. propylene glycol) in the heat transfer fluid. In some direct systems, the collectors can be manually drained when freezing is expected. This approach is common in climates where freezing temperatures do not occur often, but is somewhat unreliable since the operator can forget to drain the system. Other direct systems use freeze-tolerant collectors made with flexible polymers such as silicone rubber
QuestionSolar water heating?
AnswerSolar water heating (SWH) or solar hot water (SHW) systems comprise several innovations and many mature renewable energy technologies that have been well established for many years. SWH has been widely used in Greece, Turkey, Israel, Australia, Japan, Austria and China. In a "close-coupled" SWH system the storage tank is horizontally mounted immediately above the solar collectors on the roof. No pumping is required as the hot water naturally rises into the tank through thermosiphon flow. In a "pump-circulated" system the storage tank is ground or floor mounted and is below the level of the collectors; a circulating pump moves water or heat transfer fluid between the tank and the collectors. SWH systems are designed to deliver hot water for most of the year. However, in winter there sometimes may not be sufficient solar heat gain to deliver sufficient hot water. In this case a gas or electric booster is normally used to heat the water.
QuestionEvacuated tube collectors?
AnswerMost (if not all) vacuum tube collectors use heat pipes for their core instead of passing liquid directly through them. Evacuated heat pipe tubes (EHPTs) are composed of multiple evacuated glass tubes each containing an absorber plate fused to a heat pipe.[4] The heat from the hot end of the heat pipes is transferred to the transfer fluid (water or an antifreeze mix—typically propylene glycol) of a domestic hot water or hydronic space heating system in a heat exchanger called a "manifold". The manifold is wrapped in insulation and covered by a sheet metal or plastic case to protect it from the elements. The vacuum that surrounds the outside of the tube greatly reduces convection and conduction heat loss to the outside, therefore achieving greater efficiency than flat-plate collectors, especially in colder conditions. This advantage is largely lost in warmer climates, except in those cases where very hot water is desirable, for example commercial process water. The high temperatures that can occur may require special system design to avoid or mitigate overheating conditions. Glass-glass evacuated tube Some evacuated tubes (glass-metal) are made with one layer of glass that fuses to the heat pipe at the upper end and encloses the heat pipe and absorber in the vacuum. Others (glass-glass) are made with a double layer of glass fused together at one or both ends with a vacuum between the layers (like a vacuum bottle or flask) with the absorber and heat pipe contained at normal atmospheric pressure. Glass-glass tubes have a highly reliable vacuum seal but the two layers of glass reduce the light that reaches the absorber and there is some possibility that moisture will enter the non-evacuated area of the tube and cause absorber corrosion. Glass-metal tubes allow more light to reach the absorber and protect the absorber and heat pipe (contained in the vacuum) from corrosion even if they are made from dissimilar materials (see galvanic corrosion). The gaps between the tubes may allow for snow to fall through the collector, minimizing the loss of production in some snowy conditions, though the lack of radiated heat from the tubes can also prevent effective shedding of accumulated snow
Questionypes of solar collectors for heat?
AnswerSolar collectors fall into two general categories: non-concentrating and concentrating. In the non-concentrating type, the collector area (i.e. the area that intercepts the solar radiation) is the same as the absorber area (i.e., the area absorbing the radiation). In these types the whole solar panel absorbs the light. Flat plate and evacuated tube solar collectors are used to collect heat for space heating, domestic hot water or cooling with an absorption chiller.
QuestionWhat is Solar Thermal Collector?
AnswerA solar thermal 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 or simpler installations such as solar air heat. The more complex collectors are generally used in solar power plants where solar heat is used to generate electricity by heating water to produce steam which drives a turbine connected to an electrical generator. The simpler collectors are typically used for supplemental space heating in residential and commercial buildings. A collector is a device for converting the energy in solar radiation into a more usable or storable form. The energy in sunlight is in the form of electromagnetic radiation from the infrared (long) to the ultraviolet (short) wavelengths. The solar energy striking the Earth's surface depends on weather conditions, as well as location and orientation of the surface, but overall, it averages about 1,000 watts per square meter under clear skies with the surface directly perpendicular to the sun's rays.
QuestionSolar Thermal Introduction?
AnswerSolar thermal systems are based on a simple principle known for centuries: the sun heats up water contained in a dark vessel. Solar thermal technologies are efficient and highly reliable, providing solar energy for a wide range of applications like domestic hot water and space heating in residential and commercial buildings, support to district heating, solar assisted cooling, industrial process heat, desalination and swimming pools.
QuestionSolar Domestic Hot Water and Space Heating
AnswerEven the simplest solar thermal systems can provide a large part of the domestic hot water needs. With some more initial investment, 100% of the hot water demand and a substantial share of the space heating needs can be covered with solar energy. Natural flow systems work without any need for pumps or control stations. They are widely used in Southern Europe. Forced circulation systems are more complex and can cover also space heating. They are more and more common in Central and Northern Europe.

 

 

   

 

 
Working Principle of Sunwe Solar Water Heater

1) Vacuum tube is composed of inner and outer glass pipe, inspiratory layer, vacuum space, inspriatory membrane. The surface of inner and outer glass tube is plated with selective absorption layer. The layer absorb the solar energy and turn it into heat energy, aluminum fins pass the heat energy to the heat pipe, the liquid medium in the heat pipe is heated by the heat energy, then turns into the gas medium, the gas medium flows up to the top of the heat pipe (condenser) and transfer the energy to the copper manifold header heat pipe. At the same time the gas medium turns into the liquid when cooled, then flows down. Keep recycling.


2) An electronic controoler measures the temperature of the solar collector and the water in the bottom of the storage tank. If the collector is hotter, meaning there is heat available. The controller supplies power to a circulation pump which pushes liquid which in circulation system circulating. The heat will transferred to storage tank via the liquid.

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