Non-pressurized solar water heater


Non-pressurized stainless steel solar water heater

SD-S
1.With intelligent controller.
2.Easy to install for flat roof and pitched roof, auxiliary heating by electrical heater.
3.High pressure polyurethane foaming with thickness 55mm.
4.Stable and reliable performance, well wind resistance.
5.SUS304-2B inner tank, sillicon seals.
6.SUS304-2B/BA outer tank, against rust and corrosion.
7.Eco and economical, improves the environment and save your fuel cost.

Working principle:
This model operates to feed water automatically. Using thermosiphon system- depending on the different density between solar hot water heater and cold water, a water flowing cycle is created in the tubes. Hot water flows antomatically upwards while the cold water flows down. The water in the storage tank will be heated from this nautal circulation.
Send Inquiry
Share to:

solar water heater, solar vacuum tube, non-pressurized water heater


Description

 

Structure:
1.Water inlet
2.Water outlet
3.Air vent
4.Electrical heater
5.Sensor hole
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.

 

Item technical data:

Specification & model
SD-G2-15
SD-G2-18
SD-G2-20
SD-G2-24
SD-G2-25
SD-G2-30
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
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Stainless steel
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″
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