The heat collectors and the water tanks are connected perfectly, the heat which the panels collected will be stored in the water tank, it guarantees 24 hours per day to provide the hot water, and the system can work even under the -30 degrees. It can supply with a few tons even more water, is an ideal hot water supply system. It is applied to the big hotels, restaurants and other large places.
1: The water tank should be placed higher than the heat collectors, while the models are isolated types and the heat collectors are not pressure-enduring; The water recycled freely by the height difference between the water tank and the heat collectors.
2: The water tank should be placed lower than the heat collectors, while the models are isolated types and the heat collectors are pressure-enduring, the water is recycled by the water pump between the water tank and the heat collectors, the specific pressure-enduring models, please see the information of the pressure-enduring models on the web.
Compact pressurized solar water heater work with heat pipe:
1. The material of inner tank is SUS304 2B (food grade) with 1.2mm thickness. All machine welding.
2. The material of outer tank is SUS304 2B with 0.4mm thickness.
4. The material of stand frame is stainless steel with 1.2mm thickness or Aluminum alloy with 2.0 thickness.
5. The thickness of polyurethane foam is 55-60mm.
6. It uses heat pipe to transfer heat energy, there is no water in the vacuum tubes, and it can be used in all climates.
7. Automatic water supply, could supply water self-acting without any other installation and could able to be pressured.
Thermo siphon solar collectors provides mains pressure pre-heating via a high efficiency copper coil heat exchanger located within the solar collector tank. The way in which the Mains Pressure solar collector heats water is the same as the Non pressure solar collector. Rather than using the water in the tank directly, as the Non pressure does, the type uses a 45óª60 copper coil heat exchanger inside the tank which provides more than 1.2m2 of heat transfer area. When water flows though the coil it absorbs heat from the water inside the solar collector tank. The solar collector tank is therefore a thermal store. One advantage of this system is that almost no water is introduced into the tank apart from occasional topping up), so corrosion and scale buildup are almost totally eliminated. Tanks are designed for low to medium pressure applications using a gravity feed tank or pressure reduction valve. Direct connection to mains pressure water supply is not permitted.
MODEL Lighting
(m¬˜) Vacuum Tube Cubage
(L) GW
(kg) Qty.per20úº/40úº
Container
diameter Length No.
LQ470-1800/58-20 2.99 ¼¦58mm 1800mm 20 165 120 37/74
LQ470-1800/58-30 4.42 ¼¦58mm 1800mm 30 250 160 25/51.
MODEL Lighting
(m¬˜) Vacuum Tube Cubage
(L) GW
(kg) Qty.per20úº/40úº
Container
diameter Length No.
LQ470-H1800/58-20 2.99 ¼¦58mm 1800mm 20 165 120 36/73
LQ470-H1800/58-30 4.42 ¼¦58mm 1800mm 30 250 160 24/49.
1.All Glass Vacuated Tube
All glass evacuated tubes are the key component of solar collectors. The evacuated tube is similar to a conventional Dewar flask and consists of two borosilicate glass tubes, a glass with high chemical and thermal shock resistance. The outer side of the inner tube is coated with a sputtered solar selective surface. This coated inner tube is closed at one end and sealed at the other end to the outer tube. The annular space between the outer tube and inner tube is evacuated to virtually eliminate heat loss by conduction and convection.
We use the tubes which use the successfully developed innovative Advanced Solar Selective Coatings in commercial scale, which achieve the highest thermal efficiency and good thermal stability. Solar selective coatings absorb most solar radiation while simultaneously suppressing the thermal emittance loss from coating surfaces. They vary mainly in their optical property and thermal stability.
Excellent results have been obtained by using DC magnetron sputtering technology. A solar absorbance of 0.94 - 0.96 with an emittance of 0.04 - 0.06 at 100 centigrade has been achieved.
Models º¦47í-150 º¦58í-180
Weight 1.35í+0.12kg 2.29í+0.18kg
Structure All glass coaxial double-layer tubes All glass coaxial double-layer tubes
Outer tube diameter º¦47í+0.7mm º¦58í+0.7mm
Inner tube diameter º¦37í+0.7mm º¦47í+0.7mm
Outer Tube thickness 1.6í+0.15mm 1.8í+0.15mm
Inner tube thickness 1.6í+0.15mm 1.6í+0.15mm
Tubes length 1542í+4mm 1812í+4mm
Material of coating AlN/AIN-SS/Cu AlN/AIN-SS/CU
Absorptance 0.94~0.96 0.94~0.96
Emittance 0.04~0.06 0.04~0.06
Vacuum Pí_5í-10-3pa Pí_5í-10-3pa
Transmittance of Outer Tube 0.91 0.91
Stagnation temperature (height) 270~300íµ 270~300íµ
Heat-loss coefficient í_0.6w/ m2*íµ) í_0.6 w/ (m2*íµ).
Bearing hailstone ability hailstone diameterº¦25mm hailstone diameterº¦25mm.
Pressure-endure ability 1MPa 1MPa.
Super Heat-Conducting Tube is consists of the glass tube and copper pipe. The temperature can be more 300 in the tube.
Features:
1) High heat effectiveness: higher than all glass evacuated solar collector tube by 15%.
2) heat pipes conduction: successfully prevents the defects of tube breakage and low power output caused by water fouling and deposits or dust and sand.
3) Prevents the tube from being easily broken caused by volume expansion when water freezes in the frigid season.
4) Low thermal capacity makes the tube start up quickly.
5) Energy output of sunshine within only 2 minutes.
6) Insulation temperature can reach 250, average heat efficiency can still be more than 50%; even under -50.
7) High efficient selective absorptive coatings and vacuum heat insulation technology ensure the tube has higher heat output in cloudy weather and in moist areas, especially in winter.
8) Solar collecting plate is sealed inside a high quality borosilicate glass tube with 5 x 10 - 3Pa of vacuum, to stop corrosion; even in moist conditions.
Metal-glass evacuated solar collector tube consists of a single glass tube and a flat or curved aluminum plate inside attached to a copper heat pipe.
