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Automatic on-off device based on radiation refrigeration and street lamp

A radiation cooling and radiation cooling technology, applied to thermoelectric devices and thermoelectric device components that only use the Peltier or Seebeck effect, can solve problems such as high cost, inability to automatically switch on and off, and low efficiency

Pending Publication Date: 2020-10-30
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high cost and low efficiency in the existing technology, it must be stored at night to generate electricity normally, and the circuit cannot be automatically turned on and off, the following technical solutions are adopted:

Method used

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  • Automatic on-off device based on radiation refrigeration and street lamp
  • Automatic on-off device based on radiation refrigeration and street lamp
  • Automatic on-off device based on radiation refrigeration and street lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, an automatic on-off device based on radiation cooling includes: a windshield 1, a radiation cooler 2, an insulating casing 3, a heat conducting sheet 4, and a thermoelectric generator 5, on which a positive electrode lead 8 and a negative electrode are arranged. Lead wire 9; the windshield and the insulating shell form a cavity structure, and the windshield is transparent in the atmospheric window band; the radiation cooler includes an emission end face 6 and an input end face 7, and the emission end face of the radiation cooler faces the windproof cover and placed in the cavity; the top of the thermoelectric generator is close to the input end surface of the radiation cooler, and the heat conducting sheet is arranged at the bottom of the thermoelectric generator and is in contact with the outside air;

[0028] The top of the thermoelectric generator is in contact with the input end surface of the radiation cooler; the heat conduction sheet tr...

Embodiment 2

[0050] An automatic on-off street lamp based on radiation cooling, comprising: an automatic on-off device based on radiation cooling, a lamp, and wires; the lamp and the automatic on-off device based on radiation cooling are connected by wires to form a closed loop.

[0051] Under clear night sky conditions, due to the high emissivity of the radiation cooler at the cold end of the thermoelectric generator, the temperature will be lower than the ambient temperature under the condition of isolating convection. Therefore, the thermoelectric generator works and lights up the street lamp.

[0052] During the daytime, since the cooling effect of the radiant refrigerator is offset by solar radiation, the thermoelectric generator does not work, and the street lamps are automatically turned off. The above realizes that without any input, it can directly generate electricity at night without storage, and then light up the street lamp device.

[0053] When receiving insufficient solar r...

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Abstract

The invention belongs to the field of optical devices, discloses problems that an existing solar cell street lamp is short in service life and low in conversion efficiency and needs electric energy storage and discloses an automatic on-off device based on a radiation refrigeration technology and a street lamp. The working wavelength is infrared light, at night, under the condition that conductionand convection of the face, facing the sky, of the thermoelectric generator are isolated, the temperature of the face, facing the sky, of the thermoelectric generator is reduced through a radiation refrigerator to be lower than the environment temperature, and the other face of the thermoelectric generator generates temperature difference at two ends due to environment heating to be closed at night. In the daytime, the temperature difference generated by radiation refrigeration is counteracted by heating of solar radiation, and the thermoelectric generator does not work, so the circuit is disconnected in the daytime. The automatic on-off device is advantaged in that the automatic on-off device can be realized.

Description

technical field [0001] The invention belongs to the field of optical devices, and in particular relates to an automatic circuit breaker. Background technique [0002] With the development of the times, the pace of urban modernization is accelerating, and the contradiction between energy supply and demand is becoming more and more prominent. The lighting of street lamps alone needs to consume about 15% of electric energy. Therefore, the requirements for energy saving and green lighting are becoming more and more urgent. Higher and higher. In the past century, how to generate electricity from renewable energy has received extensive attention from scientists. [0003] Solar cells, though, offer a way to achieve this goal by enabling small-scale, distributed renewable energy generation during the day. However, its photoelectric conversion efficiency is only about 20%, and its cost is relatively high. It cannot be automatically turned on and off and must rely on photosensitive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L35/32H01L35/10H01L35/02H10N10/17H10N10/80H10N10/82
CPCH10N10/82H10N10/80H10N10/17
Inventor 詹耀辉徐修冬马鸿晨赵海鹏章新源
Owner SUZHOU UNIV
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