Double-effect free-piston Stirling thermal driving refrigerator/heat pump system

A heat pump system and refrigerator technology, which is applied in the field of double-effect free-piston Stirling heat-driven refrigerator/heat pump system, can solve the problems of restricting the development and application of refrigerators, low power density, and reduced reliability, etc. Energy saving and emission reduction effect, high power density, and mechanical vibration reduction effect

Active Publication Date: 2018-01-09
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the classic double-effect Stirling structure introduces a phase-modulating dynamic mass, which brings a series of problems such as large vibration and reduced reliability. These problems limit the development and application of double-effect Stirling refrigerators to a certain extent.
The VM refrigeration system only uses thermal compression, which has the problems of low pressure ratio and low power density

Method used

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  • Double-effect free-piston Stirling thermal driving refrigerator/heat pump system
  • Double-effect free-piston Stirling thermal driving refrigerator/heat pump system
  • Double-effect free-piston Stirling thermal driving refrigerator/heat pump system

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Experimental program
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Effect test

Embodiment 1

[0039] Such as Figure 5 As shown, a double-effect free-piston Stirling heat-driven refrigerator / heat pump system according to Embodiment 1 of the present invention includes: a double-effect free-piston Stirling refrigerator circuit and a reciprocating resonant oscillator 1 . The circuit of the double-effect free-piston Stirling refrigerator includes: engine mid-temperature radiator 2, engine regenerator 3, engine heater 4, engine heat buffer pipe 5, refrigerator mid-temperature radiator 6 connected end to end in sequence , refrigerating machine regenerator 7, refrigerating machine cold end heat exchanger 8 and refrigerating machine ejector 9; the reciprocating resonator 1 is connected with the engine mid-temperature radiator 2 and refrigerating machine ejector 9 for regulating the system resonance frequency and sound field phase.

[0040] The heat absorbed from the engine heater 4 comes from low-grade heating heat sources, such as industrial waste heat, automobile exhaust wa...

Embodiment 2

[0046] In order to better realize the purpose of application and promotion, the whole machine can adopt a coaxial structure, which will make the structure more compact and improve the reliability. Such as Figure 7 As shown, the double-effect free-piston Stirling heat-driven refrigerator / heat pump system in Embodiment 2 has the same components as the system in Embodiment 1, and the system includes a double-effect free-piston Stirling refrigerator circuit and a reciprocating motion Harmonic oscillator 1. The difference between Embodiment 2 and Embodiment 1 is that the circuit of the double-effect free-piston Stirling refrigerator is arranged in a coaxial structure, with the refrigerator discharger 9 as the central axis, and arranged in sequence from bottom to top along the axial direction There are: engine mid-temperature radiator 2, engine regenerator 3, engine heater 4, engine heat buffer pipe 5, refrigerator mid-temperature radiator 6, refrigerator regenerator 7 and refrige...

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Abstract

The invention discloses a double-effect free-piston Stirling thermal driving refrigerator / heat pump system. The system comprises a double-effect free-piston Stirling refrigerator circuit and a reciprocating motion harmonic oscillator (1), wherein the double-effect free-piston Stirling refrigerator circuit comprises an engine medium temperature radiator (2), an engine heat regenerator (3), an engine heater (4), an engine thermal buffer tube (5), a refrigerator medium temperature radiator (6), a refrigerator heat regenerator (7), a refrigerator cold-end heat exchanger (8) and a refrigerator discharger (9) which are connected end to end in sequence; and the reciprocating motion harmonic oscillator (1) communicates with the engine medium temperature radiator (2) and the refrigerator discharger(9). Compared with the classic double-effect Stirling refrigerator structure, the double-effect free-piston Stirling thermal driving refrigerator / heat pump system has the advantages as follows: a mechanical motion part, namely the free piston discharger in the engine is not needed, so that the mechanical vibration of the system is reduced, and the reliability and service life of the system are improved.

Description

technical field [0001] The invention relates to the field of refrigerators / heat pumps, in particular to a double-effect free-piston Stirling heat-driven refrigerator / heat pump system. Background technique [0002] Energy is an important material basis for human survival, economic development and social progress. Nowadays, global energy consumption continues to grow, and traditional non-renewable energy and traditional low-level energy consumption methods can no longer meet the growing material and cultural needs of human civilization. Therefore, energy conservation and emission reduction is a key measure for my country to better carry out modernization construction and economic development. In view of this, at this stage, some thermally driven devices that can use low-grade heat sources to achieve high-efficiency operation are developing rapidly. [0003] In 1816, the Scotsman O.R. Stirling proposed a patent for a thermodynamic cycle consisting of two isothermal processes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/14F25B30/06
Inventor 罗开琦张丽敏胡剑英罗二仓周远
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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