WO2017054232A1

WO2017054232A1 - Solar-powered water heater

Info

Publication number: WO2017054232A1
Application number: PCT/CN2015/091401
Authority: WO
Inventors: 魏晓敏
Original assignee: 魏晓敏
Priority date: 2015-10-02
Filing date: 2015-10-02
Publication date: 2017-04-06
Also published as: CN205579998U

Abstract

Provided is a solar-powered water heater, comprising: a water storage container (1), a solar panel (2) used for converting solar energy to electrical energy, and a heating assembly (3) connected to the solar panel (2) so as to convert electrical energy to heat energy and heat the water in the water storage container (1); the solar-powered water heater also comprises: a preheating pipe (5) connected to a water inlet (4) and used for preheating the water in the water inlet (4); in the solar panel (2), a transparent plastic layer (21) is wrapped around and placed in the preheating pipe (5); the light incident on the preheating pipe (5) reaches the solar panel (2). Thus while the solar panel (2) converts solar energy to electrical energy, the heat energy produced by same also preheats the water in the preheating pipe (5) by means of the transparent plastic layer (21); the temperature of the preheated water is raised, and said preheated water is then introduced into the water storage container (1) and is heated to a preset temperature; thus the heat energy produced by the solar panel (2) is effectively utilized and energy utilization is improved.

Description

solar water heaters

Technical field

The present application relates to the field of solar energy, and in particular to a solar water heater.

Background technique

In the process of converting light energy into electrical energy, solar cells do not convert all light energy into electrical energy. Theoretical studies have shown that the theoretical physical limit of the conversion efficiency of a solar cell of a monopolar single crystal silicon material at 0 degrees Celsius is 30%. Under certain conditions of light intensity, the output power decreases when the temperature of the silicon cell itself rises. In practical applications, the average efficiency of crystalline silicon is about 15% under standard conditions. That is to say, solar cells convert 15% of light energy into electricity, and the remaining 85% are converted into heat. Even the most efficient multi-junction semiconductor compound solar cells are currently less than 45% efficient. The energy lost is also greater than the electrical energy produced. In the conversion process, as the heat energy increases, the battery temperature continues to increase. In addition to the continuous decline in photoelectric conversion efficiency, the life of the solar cell itself will be greatly shortened. In order to make solar cells work properly and extend their life, heat sinks for solar cells are widely used. However, the lost heat energy is also a part of the solar radiation energy absorbed by the solar cell module. If the part of the heat energy is taken out and collected and used instead of being regarded as the harmful heat that needs to be lost, the purpose of fully utilizing the energy can be achieved and widened. The function of using solar cells.

Summary of the invention

The present application aims to solve at least one of the above technical problems to some extent.

The present application provides a solar water heater comprising: a water storage container, a solar panel for converting light energy into electrical energy, and being connected to the solar panel to convert electrical energy into thermal energy to water in the water storage container a heating assembly for heating, the solar water heater further comprising: a preheating pipe connected to the water inlet to preheat the water of the water inlet, the solar panel is covered with a transparent rubber layer and placed in the preheating In the heat pipe, the preheating pipe introduces light energy to the solar panel.

Further, the preheating duct has an opening to introduce light energy to the solar panel.

Further, the preheating duct is provided with a transparent protective cover at the opening.

Further, above the solar cell panel, a concentrating lens group that collects light energy onto the solar cell panel is disposed.

Further, the concentrating lens group is a Fresnel lens group.

Further, a secondary prism is further disposed between the solar panel and the collecting lens group.

Further, the solar panel is further provided with a heat sink, and the heat sink extends into the preheating pipeline in.

The beneficial effects of the application are:

By providing a solar water heater comprising: a water storage container, a solar panel for converting light energy into electrical energy, and being connected to the solar panel to convert electrical energy into thermal energy for water in the water storage container a heated heating assembly, the solar water heater further comprising: a preheating pipe connected to the water inlet to preheat the water of the water inlet, the solar panel being covered with a transparent rubber layer and placed in the preheating In the duct, the preheating duct introduces light energy to the solar panel. In this way, the solar panel converts the light energy into electrical energy, and the heat generated by the solar panel also preheats the water in the preheating pipeline through the transparent rubber layer, and the temperature of the preheated water is increased, and then introduced into the water storage container. The medium is heated to a predetermined temperature, thereby effectively utilizing the heat energy generated by the solar panel and improving the energy utilization rate.

DRAWINGS

FIG. 1 is a schematic structural view of a solar water heater according to an embodiment of the present application.

detailed description

The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative, and are not to be construed as limiting.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position of indications such as "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description and the simplified description, and is not intended to indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. It is not to be construed as limiting the application.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the present application, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless otherwise explicitly stated and defined. , or connected integrally; may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood on a case-by-case basis.

In the present application, the first feature is "on" or "on" the second feature, unless otherwise explicitly stated and defined. "Bottom" may include direct contact of the first and second features, and may also include that the first and second features are not in direct contact but are contacted by additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly above and above the second feature, or merely the first feature level being less than the second feature.

The present application will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1, the embodiment provides a solar water heater that converts solar energy into electrical energy and converts the electrical energy into thermal energy to heat the water to a specified temperature.

The solar water heater of the present embodiment mainly includes: a water storage container 1, a solar panel 2 for converting light energy into electric energy, and a solar panel 2 connected thereto to convert electric energy into heat energy to be in the water storage container 1. The heating element 3 is heated by water. In order to improve energy utilization, the solar water heater further includes: a preheating pipe 5 connected to the water inlet 4 to preheat the water of the water inlet 4, and the solar cell panel 2 is covered with a transparent rubber layer 21 and placed in the preheating pipe 5 The preheating duct 5 introduces light energy to the solar panel 2 to excite the solar panel to convert the light energy into electrical energy and its own thermal energy.

In this way, the solar panel converts the light energy into electrical energy, and the heat generated by the solar panel also preheats the water in the preheating pipeline through the transparent rubber layer, and the temperature of the preheated water is increased, and then introduced into the water storage container. The medium is heated to a predetermined temperature, thereby effectively utilizing the heat energy generated by the solar panel and improving the energy utilization rate.

In order to allow light to enter the preheating duct and reach the solar panel, the preheating duct 5 has an opening 51 to introduce light energy to the solar panel 2, and due to the transparent nature of the water, it does not cause excessive loss of light.

In order to ensure the cleanliness of the water in the preheating pipe, the preheating pipe 5 is provided with a transparent protective cover at the opening 51, so as to prevent the surrounding debris from entering the preheating pipe and affecting the cleanliness of the water while introducing light.

As another embodiment, in order to ensure the concentrating effect, a solar concentrating lens group for collecting light energy onto the solar panel 2 may be disposed above the solar panel 2. Generally, the concentrating lens group may be a Fresnel lens group.

As another preferred embodiment, in order to further enhance the concentrating effect, a secondary prism is further disposed between the solar panel 2 and the concentrating lens group.

As another embodiment, the solar panel may be provided with a heat sink, and the heat sink extends into the preheating duct to enhance the heat dissipation effect.

In the description of the present specification, reference is made to the descriptions of the terms "one embodiment", "some embodiments", "one embodiment", "some embodiments", "example", "specific examples", or "some examples" The specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the application. In this In the specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above content is a further detailed description of the present application in conjunction with the specific embodiments, and the specific implementation of the present application is not limited to the description. For the ordinary person skilled in the art to which the present invention pertains, a number of simple deductions or substitutions may be made without departing from the spirit of the present application.

Claims

A solar water heater comprising: a water storage container, a solar panel for converting light energy into electrical energy, and a solar panel connected to convert electrical energy into thermal energy to heat water in the water storage container a heating assembly, characterized in that the solar water heater further comprises: a preheating pipe connected to the water inlet to preheat the water of the water inlet, the solar panel is covered with a transparent rubber layer and placed in the In the preheating duct, the preheating duct introduces light energy to the solar panel.
The solar water heater of claim 1 wherein said preheating conduit has an opening to introduce light energy to said solar panel.
A solar water heater according to claim 2, wherein said preheating duct is provided with a transparent protective cover at said opening.
The solar water heater according to claim 1, wherein a concentrating lens group that collects light energy onto the solar cell panel is disposed above the solar cell panel.
The solar water heater according to claim 4, wherein the condensing lens group is a Fresnel lens group.
The solar water heater according to claim 5, wherein a secondary prism is further disposed between the solar panel and the collecting lens group.
The solar water heater according to claim 1, wherein the solar panel is further provided with a heat sink, and the heat sink extends into the preheating duct.