反应堆热工水力学课后习题讲解(清华大学)

1、（3）求15MPa下比焓为1600kJ/kg时水的温度；（4）求15MPa下310时水的热导率。/K-16.891637750171775027716.89194059915500565155003%的UO，慢化剂为重水DO,慢化剂温度为2601/v定律。注量率为101/（cms=0.275=0.2751QnLAq,maxF其中，是燃料芯块的横截面积。1.7MW/m热导率为常数，W/热导率为-0.0005）。气隙热阻可以忽略铝的热导率221.5W/(m铀铝合金的热导率167.9W/(m52010cm包壳外半径为mmm轴向z=650轴向z=650mm4.69.53mmm3421.3951015m

2、/s，导流叶片角度O60喷嘴导流叶片5.25.2QV=max12rdr2，计算管内体积流2m2RrR0=21=21rR2rdr=7.85410302m=()1max1m=()1max1rR2rdr=0.667m22dp=2(max1)2rdr2m=A0.052R20RrR0R25.31.213mm901.51.5m25mm3m18m热交换器试验段300401010f0.00551LVLVPP1P2ff200000.0015DReff0.01502220675(5)(5)kgs2试验段出口至换热器入口：热交换器试验段33Re3.01810313156f1111121ael11a11121122c

3、mCC5.44810JkgCmCC5.44810JkgC0.858k567.710W.Nu0.023Re205235.2510251011888WNukd.5235567.7.mCtt0.52945.44810.1188825101540.19.4Cttt2290.3Cv0.0013381mkg93.3610Pas1v.33kgm(25(2510)d221443ms0.52940.44.热交换器试验段Re2222231443747610532325622f0.6f22222222a2231at=300Cp=160bv=0.00141663=89.3610sV=V=1.5284v=705.923

4、d热交换器Re=dVv=3.01810试验段333f323a33a3cc332t=280.6CP=160bv=0.00130653=97.3710Pas=1=756.43V=1=756.43V=1.4094dRe=2.76910f=0.00551+20000+1310555410=0.0143vdV0.0015.Pf4=f4L44V42d42=14049PaPin=0.72211W2P4=Pin=0.72211W2aP4=G2v1v3=1751Paa=13811PaA4A3热交换器试验段P=1G2v=4446Pa()P()P=Pfelinexcaca+P+P+P+P+P+P+cai=1=151

5、6+6233+752+0+592714530+14049+8789+138114446+494+14831751+1751=34078Pa5.415.5MPa10.72mm3.8914.3mm1.138107mmcm5mKKpp21.0MPa氮气qAA2KppK0.515m水20cm反应堆mmmmmkg/m=mReinout)=1.3cos0.75(-0.5)MW/m2Nu=0.023RePr5.8若Nu=0.023RePrDe=Re=hh=kDeTz=Tz+qh9.8mm12.5mmm/sW/mW/mMW/mz=qz=qq,01zz,N2L2eL2L2ezcoscm235UO22727.27

6、MW15正方形排列，每个组件内有个控13.3mm302，堆芯冷却剂平均温升39.64，燃料元件包壳外表面平均热流密度652.762q,NR,N1.438E1.08q,E1.0397.4%，并近似认为元件中心最高c0.00547mNN10FdLq=0.013.2965276039392n=N1515201194tfinRt39.64tfinRt39.640CttfexRt30239.64321.820Ct11221122CpCpkgCpinCpex6.167220CWctWct0.9111.911030.91WCptsh=hfin+=hh=hfin+=hfin+FRqE=1428.2KJF222Wc0.95NKgtt=317.30Cc2tft()()Re0.023RePr()20qF6527601.032.3LFqF6527601.032.3LF=52.3CLpL=t+25expt6527601.032.315.48=344.8+25317.3=29.8C2295712q2106.22106.210L22tt=317.3+=CqqLFF=t+=414+=733.9C2hdk=qk=qFFk+=4k+6527600.012.34=+=Wt0max=2332C反应堆回路如