Thermal energy cascade utilization type thermoelectric power generation device

Abstract

The invention discloses a thermal energy cascade utilization type thermoelectric power generation device, which comprises a combustion chamber, a combustor and a flue, and is characterized in that the outer wall of the combustion chamber is provided with a high-temperature thermoelectric power generation module, the outer wall of the flue is provided with an intermediate-temperature thermoelectric power generation module, the outer side of the high-temperature thermoelectric power generation module is provided with a cooling water sleeve, an outlet of the cooling water sleeve is communicated with a cooling water re-heater, and an outlet of the cooling water re-heater is communicated with a hot end of low-temperature thermoelectric power generation module through a cooling water pipe. Compared with the prior art, the thermal energy cascade utilization type thermoelectric power generation device has the advantages that three different modules, namely, the high-temperature thermoelectric power generation module, the intermediate-temperature thermoelectric power generation module and the low-temperature thermoelectric power generation module, are arranged in a high-temperature region, an intermediate-temperature region and a low-temperature region of the same system respectively, thereby forming cascade utilization for a heat source, and thus enabling the energy utilization rate and the efficiency of the whole thermoelectric power generation system to be greatly improved.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, in particular to a multi-stage utilization high-efficiency thermoelectric power generation device. Background technique [0002] Thermoelectric power generation technology refers to that when a metal or semiconductor is heated unevenly at both ends, the carriers in it migrate, thereby forming a potential difference at both ends. The thermoelectric material with thermoelectric power generation performance is clamped by the cold end of the module and the hot end of the module, thus forming the thermoelectric power generation module. When the temperature of the hot end of the module is higher than that of the cold end of the module, the thermoelectric power generation module will generate electric energy, and the magnitude of the electric energy is often proportional to the temperature difference between the cold and hot ends of the module. [0003] Thermoelectric power generation ...

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Problems solved by technology

Therefore, the power generation efficiency of a single-stage thermoelectric power generation system composed of a certain thermoelectric power generation module is low, which restricts the development of thermoelectric power generation technology in the field of direct utilization of high-grade energy (such as the utilization of heat energy generated by fuel combustion)

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