CN201084750Y - A solar low-temperature electricity-generation archetype device - Google Patents

Abstract

The utility model relates to a low temperature source power generation model device using low temperature solar heat energy, which aims to solve the problem that the lower temperature of the solar energy is not utilized to be converted into electric energy in the prior art. The utility model is characterized in that a P-shaped lower plate electrode and an N-shaped lower plate electrode are arranged on an insulating plate material base plate; a P-shaped Bi2Te3 thermoelectric column and an N-shaped Bi2Te3 thermoelectric column are respectively connected on the P-shaped lower plate electrode and the N-shaped lower plate electrode; two upper plate electrodes are arranged on an P-shaped converter and an N-shaped converter; a vanadium titanium ceramic endothermic plate is arranged on the plate electrode. The utility model has the advantages of integrating the endothermic materials and thermoelectric materials, utilizing the Bi2Te3 thermoelectric material to convert the heat energy within the scope of low temperature utilization area of the solar energy into electric energy, and enabling low temperature power generation using heat energy of sunlight.

Description

A prototype device for solar thermal power generation at low temperature

technical field

The utility model relates to a prototype device and a manufacturing method of solar energy low-temperature heat utilization power generation prototype device for low-temperature power generation by utilizing the thermal energy of sunlight.

Background technique

With the issue of energy shortage becoming the focus of great attention, people are turning their attention to the utilization of renewable solar energy. There are two ways to convert solar energy into electricity, namely thermoelectric conversion and photoelectric conversion. The utilization of solar energy mainly includes low-temperature thermal utilization and solar photovoltaic utilization. The cost of photovoltaic technology of solar energy is relatively high, and it is generally used in solar cells and the like. The low-temperature heat utilization of solar energy is mainly used for heating and supplying hot water, such as solar water heaters. The use of thermoelectric materials to generate electricity is achieved by converting thermal energy into electrical energy through thermoelectric materials. Currently, generating electricity from thermoelectric materials requires very high temperature differences. Thermoelectric materials and devices are currently mainly used in the utilization of waste heat from power plants and automobile exhaust. If thermoelectric materials are combined with low-temperature utilization technology of solar energy to develop low-temperature solar power generation technology, it will greatly promote the utilization of solar energy.

Contents of the invention

The purpose of this utility model is to provide a prototype device for generating electricity by utilizing low-temperature solar heat, which can absorb solar radiation heat, increase the temperature of the high-temperature end of the thermoelectric device, and convert it into electric energy through the thermoelectric device.

The solar low-temperature thermal power generation prototype device of the utility model includes a substrate, on which a P-type lower plate electrode and an N-type lower plate electrode are arranged, and the P-type converter and the N-type converter are respectively connected to the P-type lower plate electrode and the N-type lower plate electrode. on the plate electrode. The upper plate electrode is arranged on the P-type converter and the N-type converter. The P-type lower plate electrode, the P-type converter, the upper plate electrode, the N-type converter, and the N-type lower plate electrode are electrically connected to form a circuit with the external load. The heat absorbing plate is arranged on the upper plate electrode. In the utility model, the heat-absorbing plate is a vanadium-titanium ceramic flat plate, the substrate is an insulating flat material, the P-type conversion body is a p-type Bi ₂ Te ₃ thermoelectric material cylinder, and the N-type conversion body is an N-type Bi ₂ Te ₃ thermoelectric material cylinder .

Bi ₂ Te ₃ thermoelectric materials have a high thermoelectric figure of merit in the range of 30-150°C, and the low-temperature heat utilization range of solar energy is 30-80°C, so Bi ₂ Te ₃ thermoelectric materials can cover the low-temperature heat utilization range of solar energy The heat energy inside is converted into electricity. The outstanding effect of the utility model is that the combination of the heat-absorbing material and the thermoelectric material realizes low-temperature power generation by using the thermal energy of sunlight.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in FIG. 1 , the solar low-temperature thermal power generation prototype device includes an alumina substrate 5 on which two copper plates are arranged as a P-type lower plate electrode 6 and an N-type lower plate electrode 4 . The vanadium-titanium ceramic plate 1 is used as a heat absorbing plate, and a piece of copper plate is arranged below as an upper plate electrode 2 . The p-type Bi ₂ Te ₃ thermoelectric material column 7 and the N-type Bi ₂ Te ₃ thermoelectric material column 3 are respectively connected to the P-type lower plate electrode 6 and the N-type lower plate electrode 4 , and are connected to the upper plate electrode 2 . P-type lower plate electrode 6, p-type Bi ₂ Te ₃ thermoelectric material cylinder 7, upper plate electrode 2, N-type Bi ₂ Te ₃ thermoelectric material cylinder 3, N-type lower plate electrode 4 are electrically connected, and form a circuit with the external load .

The following steps are used to fabricate the above device:

1) Weld a piece of metal (copper) on the vanadium-titanium ceramic plate as the upper plate electrode; weld two pieces of metal (copper) on the insulating material substrate as the P-type lower plate electrode and the N-type lower plate electrode;

2) The p-type Bi ₂ Te ₃ thermoelectric material cylinder and the N-type Bi ₂ Te ₃ thermoelectric material cylinder are clamped between the upper and lower plate electrodes by welding, and the p-type Bi ₂ Te ₃ thermoelectric material cylinder corresponds to The P-type lower plate electrode, and the N-type Bi ₂ Te ₃ thermoelectric material cylinder correspond to the N-type lower plate electrode.

3) The n-type and p-type Bi ₂ Te ₃ regions on the alumina substrate are respectively drawn out by welding wires as two poles of the power supply, and a load is connected between the two poles to form a current loop.

Claims (1)

1. A solar low temperature thermal power generation prototype device, comprising a substrate, characterized in that the substrate is provided with a P-type lower plate electrode and an N-type lower plate electrode, and the P-type converter and the N-type converter are respectively connected to the P-type lower plate electrode and the N-type lower plate electrode; the upper plate electrode is arranged on the P-type converter and the N-type converter, and the conductance of the P-type lower plate electrode, the P-type converter, the upper plate electrode, the N-type converter, and the N-type lower plate electrode is The heat-absorbing plate is arranged on the upper plate electrode; the heat-absorbing plate is a vanadium-titanium ceramic plate, the substrate is an insulating plate material, and the p-type converter is a p-type Bi ₂ Te ₃ thermoelectric material column body, and the N-type converter is an N-type Bi ₂ Te ₃ thermoelectric material column.

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