本文選題：低溫制冷機(jī)　切入點(diǎn)：液氦溫區(qū)　出處：《制冷學(xué)報(bào)》2017年04期 　論文類(lèi)型：期刊論文

【摘要】：VM氣耦合脈沖管制冷機(jī)(VM-PT)是一種新型的液氦溫區(qū)制冷機(jī),為探索兩級(jí)氣耦合復(fù)雜的機(jī)理,本文采用Sage軟件構(gòu)建了低溫調(diào)相VM-PT制冷機(jī)的整機(jī)模擬程序,研究了運(yùn)行頻率、平均壓力、毛細(xì)管長(zhǎng)度以及Er3Ni填充長(zhǎng)度等參數(shù)對(duì)兩級(jí)氣量分配的影響。結(jié)果表明:運(yùn)行頻率、平均W'力、毛細(xì)管長(zhǎng)度以及Er3Ni填充長(zhǎng)度均會(huì)影響兩級(jí)質(zhì)量流的分配,進(jìn)而影響制冷機(jī)的最低溫度,權(quán)衡工質(zhì)的做工能力以及蓄冷器損失兩方面因素,該四個(gè)參數(shù)均存在一個(gè)最佳值。搭建了實(shí)驗(yàn)平臺(tái)并對(duì)數(shù)值模擬進(jìn)行了驗(yàn)證。在實(shí)驗(yàn)中通過(guò)優(yōu)化毛細(xì)管和蓄冷器,在運(yùn)行頻率1.6 Hz、平均壓力1.4 MPa、壓比1.6的情況下得到了3.86 K的無(wú)負(fù)荷制冷溫度,在4.2 K可提供約10 m W的制冷量。
[Abstract]:VM coupled pulse tube refrigerator (VM-PT) is a new type of liquid-helium temperature range refrigerator. In order to explore the complicated mechanism of two-stage gas coupling, the simulation program of low-temperature phase-modulated VM-PT refrigerator is constructed by using Sage software, and the operating frequency is studied. The effects of average pressure, capillary length and Er3Ni filling length on the distribution of two-stage gas flow are studied. The results show that the distribution of two-stage mass flow is affected by the operating frequency, the average W' force, the capillary length and the filling length of Er3Ni. Thus affecting the minimum temperature of the refrigerator, weighing the working capacity of the refrigerant and the loss of the accumulator, The four parameters have an optimum value. The experimental platform is built and the numerical simulation is verified. In the experiment, the capillary tube and the condenser are optimized. When the operating frequency is 1.6 Hz, the average pressure is 1.4 MPA and the pressure ratio is 1.6, the no-load refrigeration temperature of 3.86 K is obtained, and the refrigerating capacity of about 10 MW at 4.2 K is obtained.
【作者單位】： 中國(guó)科學(xué)院低溫工程學(xué)重點(diǎn)實(shí)驗(yàn)室理化技術(shù)研究所;中國(guó)科學(xué)院大學(xué);
【基金】：國(guó)家自然科學(xué)基金(51276188) 博士后創(chuàng)新人才支持計(jì)劃(BX201600173)資助項(xiàng)目~~
【分類(lèi)號(hào)】：TB651
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本文編號(hào)：1569324