Non-pressurized solar water heater


Preheated solar water heater

SP-C
1.It takes the advantage of the tap water’s pressure.
2.Completely automatic operation.
3.The water can be heated rapidly.
4.Use the copper coil as the heat exchanger, simply install and use.
5.No risk for corrosion or scale deposit, best option for inferiority water area.
6.Easy to install for flat roof and pitched roof, auxiliary heating by electrical heater.
7.High pressure polyurethane foaming with thickness 55mm.

Working principle:
The vacuum tubes absorb the sunlight and turn it into the heat energy, heating the water in the tubes. Depend on the thermosiphon principle, the hot water from the tubes goes into water tank, while the cold water from the tank goes down to the tubes.
People do not use the water from the water tank directly. The cold water comes into the copper exchanger, be heated, then goes out from other side for people use.
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Description

 

1:Water inlet
2:Water outlet
3:Air vent
4:Electrical heater
5:Drain vent
6:Over flow vent
 
 
Feature:
 
1.Glass vacuum tube solar collector, high temperature,antifreeze,vacuum insulation.
2.Food-grade stainless-steel SUS304 2B inner tank,full-automatic welding technology,under the protection of magnesium rod,it can increase of service life.
3.High pressure polyurethane foaming insulation,as the prefect density and the thermal conductivity coefficient is small, so it can provide effective heat preservation
4.The outer tank adopt color steel plate,and it has good double anti-corrosion function.
5.The assistant tank can supply water automatically so that the water in the tank can always be full, it not only can save time but also very convenience.

Item Technical Data

Specification & model
SP-C-15
SP-C-18
SP-C-20
SP-C-24
SP-C-25
SP-C-30
Full system parameter
 
Tube QTY(pcs)
15
18
20
24
25
30
Tube spacing㎜)
75
75
75
75
75
75
Water tank
 
 
 
 
Net Volume of Storage Tank(L)
120
140
155
185
195
230
Gross Capacity(L)
155
185
205
245
255
305
Diamater of inner/outer Tank(㎜)
φ360/φ470
φ360/φ470
φ360/φ470
φ360/φ470
φ360/φ470
φ360/φ470
length of outer tank L1(㎜)
1310
1535
1685
1985
2060
2435
length of inner tank L(㎜)
1170
1395
1545
1845
1920
2295
material and thickness of inner tank(㎜)
SUS304 /t0.41
SUS304 /t0.41
SUS304 /t0.41
SUS304 /t0.41
SUS304 /t0.41
SUS304 /t0.41
material of outer tank
color steel plate t0.45
color steel plate t0.45
color steel plate t0.45
color steel plate t0.45
color steel plate t0.45
color steel plate t0.45
material of insulation
polyurethane
polyurethane
polyurethane
polyurethane
polyurethane
polyurethane
Size of electrical heater hole
11/4″
11/4″
11/4″
11/4″
11/4″
11/4″
Cold water inlet hole
1/2″
1/2″
1/2″
1/2″
1/2″
1/2″
Hot water outlet hole
1/2″
1/2″
1/2″
1/2″
1/2″
1/2″
Assistant tank hole
1/2″
1/2″
1/2″
1/2″
1/2″
1/2″
Air vent hole
1/2″
1/2″
1/2″
1/2″
1/2″
1/2″
Drain vent hole
1/2″
1/2″
1/2″
1/2″
1/2″
1/2″
Sensor hole
1/2″
1/2″
1/2″
1/2″
1/2″
1/2″
Heat-transferring coil
 
Coil material
TP2/SUS304 stainless steel
TP2/SUS304 stainless steel
TP2/SUS304 stainless steel
TP2/SUS304 stainless steel
TP2/SUS304 stainless steel
TP2/SUS304 stainless steel
Coil diameter(㎜)
φ12/φ20
φ12/φ20
φ12/φ20
φ12/φ20
φ12/φ20
φ12/φ20
Coil length(㎜)
20
30
30
35
35
35
Heat transfer area(㎡)
0.75/1.50
1.13/2.26
1.13/2.26
1.32/2.64
1.32/2.64
1.32/2.64
Vacuum Tube
 
 
 
 
Diameter/Length(㎜)
φ58/1800
φ58/1800
φ58/1800
φ58/1800
φ58/1800
φ58/1800
Material
High boron and silicon glass 3.3
High boron and silicon glass 3.3
High boron and silicon glass 3.3
High boron and silicon glass 3.3
High boron and silicon glass 3.3
High boron and silicon glass 3.3
Outside thickness(㎜)
1.8
1.8
1.8
1.8
1.8
1.8
Inside thickness(㎜)
1.6
1.8
1.8
1.6
1.8
1.8
Light transmission rate
≥0.90
≥0.90
≥0.90
≥0.90
≥0.90
≥0.90
Vacuum degree (Pa)
<10^-2
<10^-2
<10^-2
<10^-2
<10^-2
<10^-2
Coating absorption
≥0.90
≥0.90
≥0.90
≥0.90
≥0.90
≥0.90
Coating emittance
≤0.07
≤0.07
≤0.07
≤0.07
≤0.07
≤0.07
Average heat waste coefficient
≤0.75W/(㎡·℃)
≤0.75W/(㎡·℃)
≤0.75W/(㎡·℃)
≤0.75W/(㎡·℃)
≤0.75W/(㎡·℃)
≤0.75W/(㎡·℃)
Frame
2 feets ( left-to-right )
3 feets ( left-middle-right )
Material
Galvanized steel t1.2
Galvanized steel t1.2
Galvanized steel t1.2
Galvanized steel t1.2
Galvanized steel t1.2
Galvanized steel t1.2
Angle
45°
45°
45°
45°
45°
45°
Tube support Specification/hole distance(㎜)
φ58/75
φ58/75
φ58/75
φ58/75
φ58/75
φ58/75
Accessories
 
 
 
 
Tube sealing ring
Silicon rubber/φ58
Silicon rubber/φ58
Silicon rubber/φ58
Silicon rubber/φ58
Silicon rubber/φ58
Silicon rubber/φ58
Tube dusting rings
Silicon rubber/φ58
Silicon rubber/φ58
Silicon rubber/φ58
Silicon rubber/φ58
Silicon rubber/φ58
Silicon rubber/φ58
Tube holder
ABS/φ58
ABS/φ58
ABS/φ58
ABS/φ58
ABS/φ58
ABS/φ58
Item Size:
 
a   (㎜)
1310
1535
1685
1985
2060
2435
b   (㎜)
1110
1335
1485
1785
1860
2235
c   (㎜)
1700
1700
1700
1700
1700
1700
c/2 (㎜)
——
——
——
892.5
930
1255
d   (㎜)
1430
1430
1430
1430
1430
1430