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1、 cI|:1007- 6735(2007) 04- 0337- 04l: 2007- 04- 02:ZgSy!( T0503)Te: *( 1977- ),3,=.200 K/40 W1+L陈 曦1, 张 华1, 吴亦农2, 陈 楠2( 1.Zv,Z 200093; 2.SSZ/,Z 200083)K1: 针对温度为200 K 低温冰箱,研制了一台大冷量自由活塞斯特林制冷机.实验测试了充气压力和制冷温度对压缩机共振频率的影响;研究了膨胀机固有频率和运行频率对位移相位差的影响关系;采用多点热负荷静态复温法测试了制冷机的静态冷损,证明了氦气和丝网导热对静态冷损影响极小.该样机在200 K时最大制冷
2、量可达40 W(250 W输入) .1oM: 自由活塞斯特林制冷机; 频率; 相位差; 静态冷损ms|: TB 6 DSM: AExperimental investigation on a200 K/40 Wfree-pistonStirling coolerCHEN Xi1, ZHANG Hua1, WU Y-i nong2, CHEN Nan2(1. College of Pow er Engineering , University of Shanghai f or S cience and Technology, Shanghai 200093 , China;2. Shanghai
3、 Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083 , China)Abstract: A high capacity free piston Stirling cooler (FPSC) was designed for 200 K low-temperaturefridge. In order to study the characters of the prototype, a performance test bench was built. Frequencycharacteris
4、tics of the compressor and the expander were investigated in detail. The effects of chargedpressure and cooling temperature on the compressor resonance frequency were tested. Furthermore, theinfluences of the displacement phase shift and the expander natural frequency on its operating frequencywere
5、experimentally studied. The static loss of the cooler was tested by multipoint hot load static re-warming method. The helium and the mesh screens are proved to have little affection on the static lossin virtue of thermalconduction. The maximum cooling capacity of the prototype can reach 40 W at 200K
6、 with 250 W input.Keywords: f ree-piston Stirling cooler; f requency ; phase shif t; static loss20W40M,+/B+Yt?5,10!1 .B100K/,+x+vl,20W80M,1+/v,.d/Ks,+5j2,3 . 20W90M,Sunpower上海 理 工 大学 学 报29 4J. University of Shanghai for Science and Technology Vol. 29 No. 4 2007 ,TwinbirdaLGaGEaGlobal coolingSHINYEIT
7、/,1+/v?Z 4, 5 .3S3ym,bQpM6t,g.v.bQ1DaSa305!.MS=p3,r20agz-,iM6.-bQ/vPd/,darqa,7Ode91N.+/PT,8n,KVr10 K/,)nVr- 150 e/,7OSV2,PB+V- 150 e - 50 evS=e,y7aTbQ 6 .200 KbQ!9B1+,iYVL,s1+q+M+,kis_,44?n.1 #1+(FPSC)LzaaW#az5/,+/n,YV8ewM,7P.yN,XaaaqaVLa.aaapaZL.200 KbQ!91+jm1U.!9V1U.m2Lm.m1 1+mFig.1 Outside drawin
8、g of the FPSCV1 1+Tab.1 Specifications of FPSCT8Q/WTe/ KT h/ K8Vsc/cm3n8Vse/cm3p ar/MPaqf /HzHe 40 200 303 28 18 1.5 45m2 LmFig. 2 Prototype with frost2 L1+Lm3U,Ldazdabdkd.m3 1+?LFig.3 FPSC performance experimental rig1.kd 2.zd 3.d 4.bdd1+V;bdbib,;kdkaMkakak#qk;zdMM.338 Zv2007M29 1+,LMLYM|.KistlerF.kn8=o.h10- 4Pabi=,(LFq,isEh.3 Ls3.1 Lqks1+HTL,e,qH,Kv,rqK.m4U,(ZIrms9AMaq52 HzH,MS CrKv13 mm,yNq52 Hz.m4 qHFig.4 Piston stroke at different operating frequencym5m6sYq1.m5 qMFig.5 Resonance frequency varies with charged pressurem6 hqYFig.6 Influence of cold end temperature on compres
