Solar water heater for low latitudes

A solar water heater and low-latitude technology, applied in the field of solar energy utilization, can solve the problems of low utilization efficiency, achieve the effects of convenient processing, improve thermal cycle efficiency, and avoid low-temperature dead zones

Inactive Publication Date: 2013-03-13
NATURAL ENERGY INST GANSU ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a solar water heater used in low latitude areas to solve the problem of low utilization efficiency of existing solar water heaters in low latitude areas

Method used

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  • Solar water heater for low latitudes

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown, the present invention is used for solar water heaters in low-latitude regions, including a heat collecting tube 1 and a water tank 2, and the inlet of the heat collecting tube 1 and the water tank 2 is arranged below the center line of the water tank 2, that is, the extension of the center line of the heat collecting tube 1 The line is below the center of the circle of the water tank 2.

[0026] The distance h between the extension line L of the central line of the heat collecting tube 1 and the center O of the water tank 2 is 5-10 cm.

[0027] The included angle between the heat collecting tube 1 and the ground plane is 20°-25°.

[0028] The junction of the heat collecting tube 1 and the water tank 2 is provided with an asymmetric sealing silicone ring 3 .

[0029] In the present invention, the internal structure of the water tank ...

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Abstract

The invention provides a solar water heater for low latitudes, which aims to solve the problem that the current solar water heater at low latitudes has low utilization efficiency. The solar water heater comprises a heat collecting pipe and a water tank, wherein the access entries of the heat collecting pipe and the water tank are arranged under the central line of the water tank. According to the invention, the requirement of a low angle of tilt at low latitudes and the relation between the angle of tilt and the gravity pressure difference required by heat exchange between a vacuum heat-absorbing tube and the water tank are integrated, the design of the angles of tilt and related supports is reasonably optimized, and the combination structure of the vacuum heat-absorbing tube and the water tank is optimally designed, so that the water flow resistance between a vacuum tube and the water tank is reduced, and the heat exchange efficiency between the vacuum-absorbing tube and the water tank is improved.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, and in particular relates to a solar water heater used in low latitude regions. Background technique [0002] The inclination angle of the solar water heater has a great relationship with the local latitude. In order to obtain the average maximum energy throughout the year, it is generally recommended to design the inclination angle of the solar water heater to be equal to the local latitude angle. Since domestic solar water heaters usually use the principle of changing the heating specific gravity of water to perform natural circulation heat exchange between the heat collecting tube and the hot water in the water tank, the heat exchange efficiency has a lot to do with the height difference between the water tank and the heat collecting tube. If the inclination angle of solar water heaters in low latitude areas is designed to be too gentle, it will have a great impact on the ther...

Claims

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Application Information

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IPC IPC(8): F24J2/24F24J2/46F24S10/70
CPCY02E10/44
Inventor 李世民田凌喜文华
Owner NATURAL ENERGY INST GANSU ACAD OF SCI
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