System and method for realizing cogeneration of heat conduction oil furnace by using semiconductor power generation device

Abstract

The invention discloses a system and a method for realizing cogeneration of a heat conduction oil furnace by using a semiconductor power generation device. High-temperature heat conduction oil is used as a heat source of a semiconductor temperature-difference power generation device. The system comprises at least one semiconductor temperature-difference power generation device, wherein the semiconductor temperature-difference power generation device comprises a phase-change working medium evaporator and a phase-change working medium condenser; the condenser cools vapour by using a cold fluid as a cooling medium in a mode of indirect heat exchange; the heat conduction oil which is subjected to power generation cooling by the semiconductor temperature-difference power generation device serves as a heat supply heat source of a heat exchanger of a heat user; the phase-change working medium condenser of a power generation module heats the cold fluid (water for instance); and a generated hot fluid (hot water or the vapour for instance) can serve as a heat supply medium for external supply. In the method, by adoption of the method and a device for realizing the cogeneration of the heat conduction oil furnace by using the heat conduction oil as a heat medium, the aim of efficiently and economically utilizing heat energy is fulfilled.

Description

Technical field [0001] The invention relates to a method and a device for supplying low-temperature heat-conducting oil with a high-rated temperature heat-conducting oil furnace. A semiconductor thermoelectric power generation device is used as a temperature adjustment device, and at the same time, steam or hot water can be co-produced for use by users. It belongs to boiler cogeneration Technical field. Background technique [0002] As a special boiler, the heat-conducting oil furnace uses heat-conducting oil as the heat carrier for heating, and is widely used in actual production. Due to the needs of process production, the heat consumption of heat equipment is different, and the temperature requirements for heat transfer oil are also different. Therefore, the heat transfer oil heating station supplies heat transfer oil of different temperatures according to the needs of different heat equipment. Generally, the rated oil supply temperature of the heat-conducting oil furnace is ...

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Problems solved by technology

However, this technology has certain disadvantages: that is, the cooling source of the semiconductor thermoelectric generator needs to use a large amount of cooling water, and the heat taken away by the cooling water can only be recycled after being dissipated by the cooling tower, and the circulation of the cooling water requires a certain amount of electric energy

However, this technology also has problems: since the heat on the cold end surface of the semiconductor thermoelectric power generation module cannot be recycled and can only be lost to the atmosphere, this technology limits the boiling point of the cooling liquid to less than 100°C; inside the evaporator of the cold end surface of the power generation module The cavity is a cuboid, which is not filled with cooling liquid. The cooling liquid that absorbs the heat of the power generation module will inevitably entrain the cooling liquid when it is vaporized, so that it will contact the thin fins at the atmospheric end of the cuboid cavity to absorb heat and gasify, and the gasification of the absorbed heat The gas will exchange heat with the cooling liquid to partially vaporize the cooling liquid, and the latent heat of vaporization of the cooling liquid is not fully utilized by the cold end face of the power generation module

Moreover, the internal cavity of the evaporator is a cuboid, and the gas and liquid coexist, and the volume will increase.

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