Super Solar Water Heater
Principle:
The evacuated tube collectors seen below are an entirely different approach to solar water heating. Instead of many water filled copper pipes, these collectors use multiple vacuum filled glass tubes, each with a tiny amount of antifreeze hermetically sealed within a small central copper pipe. When heated by the sun, this antifreeze converts to steam, rises to the top of the tube, transfers its heat to a collector header, then condenses back into liquid and repeats the process.
Because heat doesn't easily transfer through a vacuum, 92% of the thermal energy hitting the absorber plate stays within the evacuated tube and passes to the collector header. This is a huge advantage because a standard flat plate collector radiates much of its accumulated heat to the surrounding atmosphere like any other hot object.
The evacuated tubes are also completely modular. Although rarely necessary, one or more tubes can be removed and replaced without affecting the other tubes in the array. There is no actual liquid transferred from the evacuated tube to the collector header...just heat. Evacuated tubes also start absorbing heat earlier in the day than flat plates due to their convex design and the tiny amount of antifreeze within the tube is freeze protected down to -50 degrees below zero.
Specification
|
Manifold material and thickness
|
A: Black or Sliver aluminum alloy ,thickness 2.0mm
B: Stainless steel 304 2B, thickness 0.8mm |
|
Header pipe material and thickness |
Diameter: 32mm, thickness 1.0mm copper pipe |
|
Heat pipe material and thickness |
Diameter:14mm, thickness 0.5mm copper pipe |
|
Insulation |
Polyurethane foam 50mm or rock wool |
|
Test pressure and work pressure |
Test pressure 9Bar, work pressure 6bar to 8bar |
|
Frame material and thickness |
A:Aluminum alloy , thickness 2.0mm
B: Stainless steel, thickness 1.2mm |
|
Collector mounting |
Flat roof/Slope roof |
|
Inlet and outlet |
1/2’’ OR 3/4’’ |
Features：
1. Reliable, efficient, Super metal heat pipes for rapid heat transfer, no water enter into the tube, Freezing resistance: -35℃, it can be used in special cold area.
2. Highest stagnation temperature can reach 250℃
3. With small thermal capacity, it can output power in 5 seconds when temperature up to 25℃
4. High efficiency, at least 10% higher than normal tubes
5. Easy plug-in installation and maintenance.
6. Suitable for mains pressure water (up to 8 bar/116psi)
7. Stable solar conversion throughout the day (tubes passively track the sun)
8. Perfect solar collector for domestic solar water heater systems.
9. Ideal for Large-sized hot water project like swimming pool, school, hotel….
The operation of the solar collector is very simple.
1. Solar Absorption: Solar radiation is absorbed by the evacuated tubes and converted into heat.
2. Solar Heat Transfer: Heat pipes conduct the heat from within the solar tube up to the header.
3. Solar Energy Storage: Water is circulated through the header, via intermittent pump cycling. Each time the water circulates through the header the temperatures is raised by 5-10oC / 9-18oF. Throughout the day, the water in the storage tank is gradually heated.
Super Solar Water Heater tube
Technical Data:
|
Model |
CD70/1700 or CD70/1900 |
|
Length |
1696mm or 1826mm |
Absorption coefficient |
>92% |
|
Glass tube diameter |
70mm |
Emission coefficient |
<10% |
|
Glass thickness |
2.0mm |
Vacuum |
<5x10-3 Pa |
|
Glass Material |
Borosilicate Glass 3.3 |
Wind resistance |
30m/s |
|
Absorptive Coating |
AL/N/AL |
Freezing resistance |
-35℃ |
|
Absorber material |
Aluminum |
Stagnation Temperature |
>250oC |
|
Condenser size |
14x75mm |
Net weight |
2.21kg |
|
MODEL |
Absorb area(m2) |
Vacuum tube |
Heat fluid content(L) |
Qty.per20'/40'
Container |
|
Diameter |
Length |
No. |
|
WCD-70/1700-A12 |
1.242 |
φ70mm |
1700mm |
12 |
2.28 |
76/161 |
|
WCD-70/1700-A16 |
1.656 |
φ70mm |
1700mm |
15 |
3.04 |
57/121 |
|
WCD-70/1700-A18 |
1.863 |
φ70mm |
1700mm |
18 |
3.42 |
51/108 |
|
WCD-70/1700-A20 |
2.07 |
φ70mm |
1700mm |
20 |
3.80 |
46/97 |
|
|
|
WCD-70/1900-A12 |
1.387 |
φ70mm |
1900mm |
12 |
2.28 |
69/145 |
|
WCD-70/1900-A16 |
1.849 |
φ70mm |
1900mm |
15 |
3.04 |
52/109 |
|
WCD-70/1900-A18 |
2.08 |
φ70mm |
1900mm |
18 |
3.42 |
46/97 |
|
WCD-70/1900-A20 |
2.31 |
φ70mm |
1900mm |
20 |
3.8 |
42/88 |
|
smartclima
615536939 
