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Preparation method of capillary tube refrigeration device based on electrocaloric effect

A refrigeration device and electric card effect technology, applied in the direction of machines using electric/magnetic effects, chemical instruments and methods, refrigerators, etc., can solve the problem of insufficient space utilization, achieve easy maintenance and replacement, improve density, Improve the effect of the composition

Active Publication Date: 2022-01-21
NANKAI UNIV
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Problems solved by technology

[0004] Aiming at the problem that the space utilization rate of existing electric card refrigeration devices is not high enough, the present invention provides a method for preparing capillary electric card refrigeration elements by utilizing the advantages of composite materials having both flexibility and mechanical strength

Method used

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  • Preparation method of capillary tube refrigeration device based on electrocaloric effect
  • Preparation method of capillary tube refrigeration device based on electrocaloric effect
  • Preparation method of capillary tube refrigeration device based on electrocaloric effect

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Embodiment Construction

[0029] The present invention is by doping Ba in the preparation process of the relaxation ferroelectric polymer P (VDF-TrFE-CFE) 0.6 Sr 0.4 TiO 3 (BSTO), and prepare the capillary-shaped electric card refrigeration element in the mode of coaxial wet spinning, construct the magnetic drive refrigeration device, the preparation method of the capillary tube refrigeration device based on the electric card effect of the present invention is:

[0030] 1. Preparation of carbon nanotube dispersion

[0031] Disperse 5 mg of carboxylated carbon nanotubes in a mixture of 18 ml of isopropanol and 2 ml of deionized water, sonicate the probe for 1 h and centrifuge at 3500 rpm for 5 min, and take the supernatant as the carbon nanotube solution.

[0032] 2. Preparation of inorganic fillers and types of Ba with high breakdown electric field 1-x Sr x TiO 3 P(VDF-TrFE-CFE) Capillary

[0033] P(VDF-TrFE-CFE) powder, Ba 1-x Sr x TiO 3After mixing with N,N-dimethylformamide (DMF) according ...

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Abstract

The invention provides a preparation method of a capillary tube refrigeration device based on an electrocaloric effect, and belongs to the technical field of solid refrigeration. According to the preparation method of the capillary tube refrigeration device based on the electrocaloric effect, a wet coaxial spinning technology is used, a composite material composed of Ba0.6Sr0.4TiO3 and P (VDF-TrFE-CFE) is prepared into a capillary-shaped refrigeration element, and the capillary-shaped refrigeration element is made into the refrigeration device according to the mode in the following figure. The device is composed of electromagnets operated by a relay on the left side and the refrigeration element on the right side, the two electromagnets are controlled by the relay to work intermittently and alternately, and capillary tubes are driven to guide liquid in heating and refrigerating states to corresponding areas separately. Due to the self-packaging performance of the capillary tubes, the refrigeration device has a high space utilization rate, and a solution is provided for efficient cooling of microelectronic devices.

Description

technical field [0001] The invention belongs to the technical field of solid-state refrigeration, and relates to a method for preparing a refrigeration capillary and the assembly of a high-efficiency magnetically driven refrigeration device. Background technique [0002] In recent years, with the improvement of integration and computing performance, the specific energy consumption of electronic chips has increased exponentially. This means that it generates more heat as it works, causing the temperature to rise rapidly. However, studies have shown that when the operating temperature is close to 70-80°C, the performance will decrease by 10% for every 2°C increase. A further increase in temperature may even cause irreversible physical damage to the chip. Therefore, achieving efficient thermal management of electronic chips in a limited space is an important guarantee for their efficient operation. However, conventional refrigeration systems based on vapor compression cycles...

Claims

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Application Information

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IPC IPC(8): F25B21/00D01F1/10D01F6/48C01G23/00
CPCF25B21/00C01G23/006D01F6/48D01F1/10
Inventor 马儒军崔恒张权
Owner NANKAI UNIV
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