CN-122014377-A - Heat dissipation system driven by low-temperature heat source

CN122014377ACN 122014377 ACN122014377 ACN 122014377ACN-122014377-A

Abstract

The application provides a heat dissipation system driven by a low-temperature heat source, which comprises a low-temperature fluid channel, an organic working medium storage tank, an organic working medium pump, an organic working medium evaporator, a piston expander power device and a heat dissipation device, wherein the low-temperature fluid channel is used for conveying the low-temperature fluid source, the organic working medium storage tank is used for storing an organic working medium, the organic working medium pump is connected with the organic working medium storage tank and is used for pumping the organic working medium, the organic working medium evaporator is connected with the low-temperature fluid channel and the organic working medium pump and is used for transferring heat of the low-temperature fluid source to the organic working medium to evaporate the organic working medium, the piston expander power device is connected with the organic working medium evaporator and is used for absorbing heat of the organic working medium and converting the heat into mechanical power, and the heat dissipation device is connected with the piston expander power device and receives the mechanical power output by the piston expander power device to conduct vibration heat dissipation. The heat dissipation system driven by the low-temperature heat source can realize direct and efficient utilization of low-temperature waste heat, does not need to convert the low-temperature waste heat into electric energy or high-speed rotary motion, and avoids efficiency loss and system complexity caused by energy form conversion.

Inventors

GAO WEI
YU ZAISONG
LI HONGZHI
WANG KAI

Assignees

西安热工研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20260127

Claims (9)

1. A heat dissipating system driven by a low-temperature heat source, comprising: a cryogenic fluid channel for delivering a cryogenic source fluid; the organic working medium storage tank is used for storing organic working media; the organic working medium pump is connected with the organic working medium storage tank and is used for pumping organic working medium; the organic working medium evaporator is connected with the low-temperature fluid channel and the organic working medium pump and is used for transmitting the heat of the low-temperature heat source to the organic working medium to evaporate the heat; The piston expander power device is connected with the organic working medium evaporator and is used for absorbing heat of the organic working medium and converting the heat into mechanical power; And the heat dissipation device is connected with the power device of the piston expander and receives the mechanical power output by the heat dissipation device to perform vibration heat dissipation.
2. The heat dissipating system driven by a low-temperature heat source of claim 1 wherein said organic fluid pump is a variable frequency pump.
3. The heat dissipating system driven by low-temperature heat source according to claim 1, wherein the piston expander power device adopts a multi-cylinder parallel output form.
4. The heat dissipating system driven by low temperature heat source of claim 1 wherein said piston expander power means is a flexible piston expander.
5. The heat dissipating system driven by low-temperature heat source according to claim 1, wherein the heat dissipating device comprises: The chassis is provided with a positioning chute; the tray is arranged on the chassis in a lifting manner; the radiating coil is arranged on the tray and can realize vibration radiation when the tray is lifted; the push rod penetrates through the positioning sliding groove and is connected with the tray, and can axially reciprocate in the positioning sliding groove to drive the tray to lift; The connecting assembly is used for connecting the push rod with the output shaft of the piston expander power device, and can rotate around the output shaft of the piston expander power device and drive the push rod to axially reciprocate.
6. The heat dissipating system driven by low temperature heat source of claim 5 wherein said heat dissipating coil is integrally shaped as a hyperbolic spiral.
7. The heat dissipating system driven by a low temperature heat source of claim 5 wherein said connecting assembly comprises a rocker and a connecting rod, one end of said rocker being connected to the output shaft of said piston expander power means and rotatable with the output shaft, one end of said connecting rod being rotatably connected to said rocker and the other end being rotatably connected to the push rod.
8. The heat dissipating system driven by low-temperature heat source of claim 5, wherein said heat dissipating device further comprises: The inlet hose and the outlet hose are respectively connected with the inlet end and the outlet end of the radiating coil pipe, and can be deformed in a conformal way when the radiating coil pipe vibrates.
9. The heat dissipating system driven by low-temperature heat source of claim 5, wherein said heat dissipating device further comprises: the guide column is arranged on the chassis and is in sliding fit with the tray, so that the tray can be guided.

Description

Heat dissipation system driven by low-temperature heat source Technical Field The application relates to the technical field of heat conversion, in particular to a heat dissipation system driven by a low-temperature heat source. Background Low temperature heat sources (e.g., geothermal heat at 40-60 ℃, industrial waste heat, etc.) are limited by the second law of thermodynamics, which is inefficient and economical to convert to electrical or mechanical energy, although they are of huge bulk. At the same time, many industrial processes (e.g., plant condensate cooling, supercritical CO2 circulation, etc.) just require additional energy (e.g., driving fans, water pumps) to reject such low temperature heat, creating energy waste. The piston expander is a feasible scheme for recovering low-temperature waste heat, but has low output power and low rotating speed. If the small power is converted into high-speed rotation motion required by driving a fan or a water pump through a gear and other mechanisms, the efficiency is low, and the complexity and the cost of the system are increased. Therefore, how to directly and efficiently utilize the low-speed and low-power output becomes a key difficulty in popularization and application in the low-temperature heat source recovery field. Disclosure of Invention The embodiment of the application at least provides a heat dissipation system driven by a low-temperature heat source, which can realize direct and efficient utilization of low-temperature waste heat without converting the low-temperature waste heat into electric energy or high-speed rotary motion, and avoids efficiency loss and system complexity caused by energy form conversion. The embodiment of the application provides a heat dissipation system driven by a low-temperature heat source, which comprises: a cryogenic fluid channel for delivering a cryogenic source fluid; the organic working medium storage tank is used for storing organic working media; the organic working medium pump is connected with the organic working medium storage tank and is used for pumping organic working medium; the organic working medium evaporator is connected with the low-temperature fluid channel and the organic working medium pump and is used for transmitting the heat of the low-temperature heat source to the organic working medium to evaporate the heat; The piston expander power device is connected with the organic working medium evaporator and is used for absorbing heat of the organic working medium and converting the heat into mechanical power; And the heat dissipation device is connected with the power device of the piston expander and receives the mechanical power output by the heat dissipation device to perform vibration heat dissipation. In an alternative embodiment, the organic working fluid pump is a variable frequency pump. In an alternative embodiment, the piston expander power device adopts a multi-cylinder parallel output mode. In an alternative embodiment, the piston expander power unit employs a flexible piston expander. In an alternative embodiment, the heat dissipating device includes: The chassis is provided with a positioning chute; the tray is arranged on the chassis in a lifting manner; the radiating coil is arranged on the tray and can realize vibration radiation when the tray is lifted; the push rod penetrates through the positioning sliding groove and is connected with the tray, and can axially reciprocate in the positioning sliding groove to drive the tray to lift; The connecting assembly is used for connecting the push rod with the output shaft of the piston expander power device, and can rotate around the output shaft of the piston expander power device and drive the push rod to axially reciprocate. In an alternative embodiment, the whole shape of the heat dissipation coil is a hyperbolic spiral body. In an alternative embodiment, the connecting assembly includes a rocker and a connecting rod, one end of the rocker is connected with the output shaft of the power device of the piston expander and can rotate along with the output shaft, one end of the connecting rod is rotationally connected with the rocker, and the other end of the connecting rod is rotationally connected with the push rod. In an alternative embodiment, the heat dissipating device further comprises: The inlet hose and the outlet hose are respectively connected with the inlet end and the outlet end of the radiating coil pipe, and can be deformed in a conformal way when the radiating coil pipe vibrates. In an alternative embodiment, the heat dissipating device further comprises: the guide column is arranged on the chassis and is in sliding fit with the tray, so that the tray can be guided. The technical scheme of the application has the following beneficial technical effects: According to the heat dissipation system driven by the low-temperature heat source, disclosed by the embodiment of the application, the heat of the low-temperature heat sourc