A thermoelectric power generation device based on fluid heat exchange

Abstract

The invention discloses a temperature-difference electricity generation device based on fluid heat exchanging. The temperature-difference electricity generation device comprises a temperature-difference electricity generation chip, the two sides of the temperature-difference electricity generation chip are provided with fluid cavities for making hot fluid and cold fluid perform convection currentheat exchanging, the two ends of the hot-side fluid cavity are provided with a hot-side fluid lead-in connection head and a hot-side fluid lead-out connection head, the two ends of the cold-side fluidcavity are provided with a cold-side fluid lead-in connection head and a cold-side fluid lead-out connection head, the position, close to the hot-side fluid lead-in connection head, inside the hot-side fluid cavity is provided with one lead-in end hole plate, and the position, close to the cold-side fluid lead-in connection head, inside the cold-side fluid cavity is provided with one lead-in endhole plate. By means of the temperature-difference electricity generation device based on the fluid heat exchanging, a heat exchanging medium is made to be capable of performing disperse flowing as evenly as possible to scour all areas of the cavities effectively when entering the corresponding cavities, flowing dead areas are avoided form forming near lead-in mouths of the corresponding cavities,heat exchanging areas on the two sides of the temperature-difference electricity generation chip are effectively increased, and then the actual working temperature difference on the two sides of thetemperature-difference electricity generation chip is increased effectively to improve the output power of electrical energy obtained by converting.

Description

Technical field [0001] The invention relates to a thermoelectric power generation device, in particular to a thermoelectric power generation device based on fluid heat exchange. Background technique [0002] In the process of human activities or industrial production, a large amount of heat energy that is no longer used will be discharged after the use of heat energy-that is, waste heat. This waste heat is usually released into the environment with waste water or exhaust gas as a medium, which not only causes a lot of energy waste , And it will also cause great damage to the environmental balance. For example, in the automotive field, the current thermal efficiency of vehicle engines is only 35%, and most of the heat after combustion will be discharged into the air in the form of exhaust gas; in the field of new energy, After solar heat collection, liquid is usually used as a medium, such as solar water heaters, solar distillation, solar air conditioners, etc.; in the process of ...

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Problems solved by technology

[0004] However, due to the lack of a drainage structure for the heat exchange medium inside the hot side fluid chamber and the cold side fluid chamber of the existing thermoelectric power generation device, the heat exchange medium cannot be effectively flushed due to the sudden expansion of the flow when entering the corresponding chamber. The corner area of ​​the chamber corresponds to the flow dead zone near the inlet of the chamber, which reduces the heat exchange area of ​​the thermoelectric power generation chip, which will lead to a decrease in the actual working temperature difference between the two sides of the thermoelectric power generation chip; in addition, when After the heat exchange medium enters the corresponding chamber, when exchanging heat with the corresponding surface of the thermoelectric power generation chip, the flow boundary layer on the heat exchange surface will gradually become thicker, and the heat transfer thermal resistance will gradually increase, which will also cause the two sides of the thermoelectric power generation chip to The actual operating temperature difference on the side is reduced

Based on this, the output power of the electric energy converted by the existing thermoelectric power generation device is extremely low, which restricts the further development of thermoelectric power generation technology

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