Non-Pressurized Heat Pipe Solar Water Heater System

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China main port
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Min Order Qty:
1 set
Supply Capability:
6000 set/month

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Product Description:

Introduction of Non-Pressure Solar Water Heater:

Non-pressure Solar Heater is one of the most economical solar water heating device with pretty high efficiency at the same time. It consists of hot water storage tank, solar vacuum tubes with mouth plug in storage tank, and bracket supporting tank and tubes.When cold water in evacuated tubes is heated with solar irradiation, as the specific gravities of hot water and cold water are different, hotter water goes upward to storage tank and colder water goes downward to glass tubes. through this continuous circulation, the cold water in storage tank will be gradually heated till sunset.



1.    High thermal performance and working temperature: the heat exchanging rate even in winter can up above 55%.

2.    Heat collecting efficiency is at least 20% above common solar systems.

3.    Work in all day and all season: no matter any corner of the world, this system can work well even -40 to avoid the tube freezing problem.

4.    Reliability: No water following through the tube, so water scale can not generate and tube cracks could be avoided, the system still can keep working even with some damaged tubes.

5.    It can connect with water tap and work automatically with pressure0.6Mpa, bring enjoyable washing experience.

6.    Safety: P/T valve would release pressure and temperature to protect tank..


 Technical Specification:

1.    Outer tank material: SUS304 stainless steel or powder coated color steel

2.    Inner tank material: 1.2mm thick SUS304 food grade stainless steel  ( Optional material SUS316L)

3.    Vacuum tube material: borosilicate glass 3.3; AL-SS-CU absorb coating, with copper heat   pipe inside

4.    Frame material: 1.2mm thickness stainless steel

5.    Insulation material: 55mm thickness polyurethane

6.    Suitable for mains pressure water(up to 8 bar/116psi)

7.    Easy plug-in installation

8.    Install the T/P valve on the pressurized tank

9.    Seal material: Stabilized High Temperature Silicon

  1. Outer tank material: SUS304 stainless steel or powder      coated color steel

  2. Inner tank material: 1.2mm thick SUS304      food grade stainless steel  (      Optional material SUS316L)

  3. Vacuum tube material: borosilicate glass 3.3; AL-SS-CU absorb      coating, with copper heat   pipe inside

  4. Frame      material: 1.2mm thickness stainless steel

  5. Insulation      material: 55mm thickness polyurethane

  6. Suitable for mains pressure water(up to 8 bar/116psi)

  7. Easy      plug-in installation

  8. Install      the T/P valve on the pressurized tank

  9. Seal material: Stabilized High Temperature Silicon


19. Vacuum Tube

20.  Size (mm)

21.   Φ47*1500 / Φ58*1800 / Φ70*2100   

22.  Tube (pcs)

23.   10 / 12 / 15 / 18 / 20 / 22 / 24 / 30 / 36 / 42

24.  Material

25.   Borosilicate 3.3 glass, magnetron spluttering selective coating

26.  Coating

27.   Single-target   AL-N/AL or Three-target AL/N-Cu-SS

28. Water Tank

29.  Capacity

30.   80L ~ 500L for hot water storage tank

31.  Inner tank

32.   Food-grade stainless steel SUS304-2B / SUS316

33.  Insulation

34.   High-density polyurethane foam with 70~80 hour heat preservation

35.  Tank shell

36.   Food-grade   stainless steel SUS304-2B

37. Bracket

38.  Shaped strong   aluminum alloy structure adaptable for flat or slope roof

39. Accessories

40.  Anti-aging silicon seals, Dustproof seals, Air-vent cap, Stainless screws

41. Auxiliary   Devices

42.  Assistant tankIntelligent controllerElectrical heaterMagnesium   anodes

43. Tilt Angle

44.  25 ~ 50°

45. Water Output

46.  45 - 95°C

47. Hail Resistance

48.  Φ25mm diameter

49. Model Number

50. Solar Vacuum Tube

51. Tank 

52. Liter

53. System

54. Liter

55. Container Loading Qty /sets

56. Size /mm

57. Qty /pcs

58. 20GP

59. 40GP

60. 40HQ

61. VNS-58SA12-100

62. Φ58*1800

63. 12

64. 100

65. 132

66. 58

67. 119

68. 140

69. VNS-58SA15-130

70. 15

71. 130

72. 170

73. 54

74. 108

75. 131

76. VNS-58SA18-150

77. 18

78. 150

79. 198

80. 43

81. 86

82. 105

83. VNS-58SA20-170

84. 20

85. 170

86. 223

87. 40

88. 80

89. 97























Product Show

Non-Pressurized Heat Pipe Solar Water Heater System

Non-Pressurized Heat Pipe Solar Water Heater System

Non-Pressurized Heat Pipe Solar Water Heater System


Our Services

1.  OEM service

2. Warranty: 5 years

3. Considerable after sale service

Color steel Compact pressure Thermal solar heater


1.    What’s the delivery time?

10 days after receiving deposit.

2.    How long is the warranty?

5 years for whole system, 1 year for accessory

3.    What’s your production capacity?


4.    What’s the MOQ?

1 set.

5.    What’s your payment term?

Container: 30% T/T in advance for deposit, 70% T/T before shipment for fist order.

70% T/T after seeing copy of B/L from second order

Sample: 100% T/T in advance

Other choices: L/C at sight.

6.    What certifications do you have?


Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:What is a trough solar collector?
As a high-temperature collector, can get a higher collector temperature, can be used for power generation, refrigeration and air conditioning, heating, desalination and other production and living areas.
Q:What is the principle of thermal conversion of solar collectors?
According to heat transfer media classification: can be divided into liquid collector and air collector two categories, of which the liquid for the heat medium for most of the water as a medium, that constitutes a variety of solar water heaters; air for the heat transfer medium, It constitutes a variety of solar dryers. The core of the solar collector is the heat sink, which functions to absorb the radiant energy of the sun and transfer heat to the heat transfer medium. In the liquid as the medium, the heat-absorbing plate tube plate, wing tube, flat box, snake tube, etc., can be made of metal materials and non-metallic materials. The sunscreen surface of the heat-absorbing panel is coated with a black endothermic coating. The structure of the solar collectors for the heat transfer medium is often in the form of mesh, honeycomb and porous beds.
Q:The characteristics of flat solar collectors
Flat solar water heater advantages: First, particularly suitable for integration with the building requirements. Flat solar water heater because of its structural characteristics of the plane, in the integration of solar energy applications, the shape of flexible structure, the design is not subject to the shape or size of the constraints,
Q:What is the solar collector
Because of the different use, the collector and its matching system type is divided into many kinds, the name is also different, such as cooking for the solar cooker, used to generate hot water solar water heater, dry items for the solar dryer, for Melting metal solar furnace, as well as solar houses, solar thermal power plants, solar desalination and so on.
Q:Is solar collector directly using solar energy?
Most of the solar water heaters are equipped with electric auxiliary heating function, when the rainy weather will automatically start when the electric heating function.
Q:Flat solar collector how, flat solar collector working principle introduced
Set up reliable lightning protection measures. 5) The storage tank base must be located on the load-bearing wall (beam) of the building and reserved for fixing parts. The gap between the embedded part and the base, the application of fine stone concrete filling dense. 6) storage tank application anchor bolts and foundation connection firmly.
Q:Flat solar collector is a good blue film, or good black chrome? It is best to specify.
Black nickel coating is mostly nickel alloy coating, its composition with the plating solution composition and deposition conditions change. Black nickel plating solution is divided into two categories, namely zinc sulfate plating solution and molybdenum-containing plating solution. The black nickel coating obtained from the first type of bath contains 40% to 60% nickel and about 20% to 30% zinc.
Q:What is the working principle of flat solar collectors?
In this way, the cold working fluid from the bottom of the collector is heated by the solar energy in the fluid channel, the temperature is gradually increased, the heat after heating, with the heat from the top of the collector, Water tank stand-by, that is useful energy income.
Q:About centralized solar water heater
passes through the solenoid valve or the collecting system circulating water pump under the control of the control system to run automatically, The hot water in the collector will be transferred to the
Q:How can solar collector system prevent wind?
should be added appropriate protective measures. Solar hot water engineering system installed in the outdoor part should be able to withstand not less than 10 wind load; if the local history of the maximum wind

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