Water heater details:
Model: FD-NP58-10
How water heater works
1. Water heater of all glass evacuated tube collector integrated with storage tank, are ideal for use in houses and other applications where cheap, reliable hot water supply is required. They are simple, economic and practical.
2. As the specific gravities of hot water and cold water are different, cold water goes downward and hot water goes upward.
3. When cold water in evacuated tubes is heated, it becaomes lighter and goes to the water tank, while cold water in the tank goes down to the evacuated tubes
4. Through this circulation, the cold water in the water tank will be gradually heated.
Water heater features
1. Cheap and reliable solution, Simple structure, Easy installation
2. High efficiency
3. Withstands water pressure no more than 0.1MPa
4. Operated without any power supplying
5. Electric heater can be used as back up in rainy days
6. Hot water can be used directly, or can be used as a pre-heated
Water heater optional accessories
1. Assistant tank: 3/5/8/10/12/15/20L
2. Controller
3. Electrical heater: 1.5/2/2.5kw
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Water heater specification |
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Description |
Water heater FD-NP-58-10 |
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Material of out tank |
0.4mm thickness color steel/ fluorine carbon steel |
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Material of inner tank |
Food grade 0.4mm thickness SUS304 stainless steel |
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Tank insulating layer |
55mm 45kg/m³ high-density polyurethane foamed |
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Inlet and outlet hole |
Male G 1/2, 3/4 |
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Max pressure |
0.05 Mpa |
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Solar collector tube |
3.3 Borosilicate glass with N/Al coating |
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Thickness of glass tube |
1.6mm |
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Vacuum tube tightness |
P≤0.005 Pa |
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Absorption |
as=0.93-0.96 (AM1.5) |
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Emission ratio |
εh=0.04-0.06 (80C±5C) |
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Idle sunning property parameters |
Y=220~260m2.C/KW |
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Average heat loss coefficient |
ULT=0.6~0.7W/(m2.C) |
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Bracket: |
1.5mm thickness Galvanized Steel |
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Structure of tank: |
4 holes for air vent,overflow,water inlet and outlet,electric heater |
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Welding: |
Argon arc welding |
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Fastening pieces: |
Made of stainless steel screw |
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Absorber area |
0.937m² |
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Tube quantity |
10 tube 58x1,800mm |
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Tank capacity |
90 Liter |
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