Two-stage thermoelectric power generation waste heat utilization device

A technology of thermoelectric power generation and thermoelectric power generation sheet, applied in the directions of generators/motors, electrical components, etc., can solve problems such as hindering large-scale application and low output power, and achieve the effect of solving the problem of waste heat utilization, high power, and solving power shortage

Pending Publication Date: 2018-02-09
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are certain problems in thermoelectrochemical batteries, especially the current low output power hinders its large-scale application

Method used

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  • Two-stage thermoelectric power generation waste heat utilization device
  • Two-stage thermoelectric power generation waste heat utilization device
  • Two-stage thermoelectric power generation waste heat utilization device

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Embodiment Construction

[0022] The present invention will be further introduced through the embodiments below in conjunction with the accompanying drawings.

[0023] See attached picture, figure 1 It is a schematic diagram of the system structure of the present invention, figure 2 is a schematic diagram of the thermoelectrochemical cell principle, image 3 , Figure 4 , Figure 5 It is a schematic diagram of two kinds of reference designs that can be used in the specific application of the present invention, which are tube type and flat plate type respectively.

[0024] like figure 1 As shown, a waste heat utilization device for two-stage thermoelectric power generation includes a heat source 1, a semiconductor thermoelectric power generation chip 2, and a flow-type thermoelectrochemical battery system, which is characterized in that the hot side of the semiconductor thermoelectric power generation chip 2 is in contact with the heat source 1, and the cold side is in contact with The high-tempe...

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Abstract

The invention discloses a two-stage thermoelectric power generation waste heat utilization device. The two-stage thermoelectric power generation waste heat utilization device comprises a hot source, asemiconductor thermoelectric power generation sheet and a liquid flow-type thermoelectric chemical battery system, wherein the liquid flow-type thermoelectric chemical battery system comprises an electrolyte, an electrode, a heat sink and a water pump, a hot side of the semiconductor thermoelectric power generation sheet is in contact with the hot source, a cold side of the semiconductor thermoelectric power generation sheet is in contact with the electrolyte, and primary power generation is performed under temperature difference; and the electrolyte passes through a surface of the semiconductor thermoelectric power generation sheet and the heat sink under the action of the water pump to respectively form a high-temperature electrolyte and a low-temperature electrolyte, the electrolyte forms a thermoelectric chemical battery in the high-temperature electrolyte and the low-temperature electrode, and secondary power generation under the temperature difference of the electrolyte is performed. Two types of thermoelectric power generation technologies are combined to use, the characteristics of mobility and relatively low working temperature zone of the thermoelectric chemical batteryare fully utilized, meanwhile, cooling of the cold side of the semiconductor thermoelectric power generation sheet and secondary utilization of waste energy are achieved, and the generated power of the semiconductor thermoelectric power generation sheet and the total waste heat utilization rate are improved.

Description

technical field [0001] The invention relates to a waste heat recovery device, in particular to a waste heat utilization device for two-stage temperature difference power generation. Background technique [0002] As a direct thermoelectric conversion technology, semiconductor thermoelectric power generation has been widely researched and applied in the field of waste heat recovery and utilization. However, due to the small thickness of the semiconductor thermoelectric power generation sheet itself, it is difficult to obtain a sufficient temperature difference in practical applications. In order to reduce the temperature of the cold end, a well-designed cold end heat exchange surface is usually used, and cooling methods such as forced air cooling, water cooling, and heat pipes are used. Among them, the water cooling method is relatively low in cost and effective, and is more common in actual use. However, water cooling causes part of the heat to be dissipated through high tem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N11/00
CPCH02N11/002
Inventor 钱皋黄瑞俞小莉陈俊玄李智黄钰期吴加荣
Owner ZHEJIANG UNIV
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