1、第四章 室内热水供暖系统的水力计算ajjyPPRlPPPdGPmPvdRa/22dKvdfRfe,2320eReR64vdRe2320eRsGsmdGdG/90043600222 2dR mPadGR/1025.6 852PaPj 222222djPdldlddjdGdlRRlP29002422222422/P 29001hKgdAa 令22GAGAPzhd2222dlddldzhdjRlllRPRlP 即 n n n PdG 、GPd 、dPG 、n 先求出最不利循环环路先求出最不利循环环路 n 校核计算：校核计算：n lPRPj径。在水力计算表中查出管和再根据GRPjP dG、通过水流量能
2、力、PdfghfzhPgHPPPP fP1I1IPfghIPgHP11528dG1025.6d、GfRmPalRI/P11IpjhKgttQttQGhghg/86.010187.436003 RlPydjPP22 jyPPP jyPP100 11IjyIPPPP I131614115141161512、jyIIPPPPP16151615/5.0、lPRpj86.0hgttQG1001615161516152、PPPPxjyI141161512IIPPPP、15n lsGGhKgttQGhg/27225790086.086.06mPaRpj/1206027027227028066.4591.48
3、66.45pjRmPa/31.46m/s 22.0PalRPpjy 9.4395.931.466PaPPdj 5.16679.237PaPPPjy 4.6065.1669.439PaPd79.23Kg/h 136272212167GGPa/m 58.08135-136 13514027.5732.6127.57pjRsmPalRPpjy/0.2 7.522908.587PaPPdj 7.88466.1945PaPPPjy 4.14077.8847.522PaPd66.1945 14109821、jyPPP%4.339314063393173141073PPPx51131021jyjyIVPPP
4、PP、Pa 210243592.6461311011-1021jyjyIIPPPPP、Pa 21023105520741121021jyjyIIIPPPPP、Pa 165439565610Kg/h 24825720086.0GPa/m 56.85.39621020.521020.5RpjlPa/m 39240-24824026058.3652.4258.36Rpjm/s 20.0240-24824026019.021.019.0WQ72005.35.15.15.019.66PaP d 111个旁流三通个乙字弯个闸阀Pa 2346391515 lRPpjyPa 68.813.519.66P15j
5、Pa 8.3028.68234PP15jy立管资用压力立管阻力损失立管资用压力不平衡率 321PPPP2332222112 GSGSGSSG即321 SSSSGS1S2S3?P1?P2?P3321321321:1:1:1:aaaSSSGGG3211111SSSSbGS1G1S2G2S3G3321SPSPSPSPb321GGGG321aaaab233222211SSSP GGG又pjRlPRpjdRGpj、例例4-44-4，解解:以管段以管段5 5、8 8和立管和立管为例为例 管段管段5 5、8 8的流量的流量 确定管径确定管径 查附录查附录4-44-4，得，得 由附录由附录4-54-5，得：，
6、得：Kg/h 496270226G G6IV85 GGmm 2585 dd3.1d8.2212163.1 ldzhPad 28.32P 486Kg/h,Gmm 25时，PaP 5.2932.28486496 22PaP 5.6728.225.2985、Kg/h 215.647.2548214 IIIGW 7200120021000214002QPaPPPIVIII 23226731649 85、4.48zhPaPP484.4823221zhzh时，当 7.28216720086.086.0GQt8.174513/11961,1,1jjPGa43.184100/11802,2,2jjPGa212
7、1:aaGGhkgGaaaGzht/1264257343.188.178.172111,hkgGaaaGzht/1309257343.188.1743.182122,21 GGG 总流量 057.11196/1264/1,1,1,jtGGG右侧946.01264/1196/1,1,1,tjtGG109.11180/1309/2,2,2,jtGGG左侧901.01309/1180/2,2,2,tjtGG21,1,1,/jtpGG右侧22,2,2,/jtpGG左侧2,2,1,1,jpjptPPP sm/0.552500-25732500-26000.53-0.560.53 ,5.1a 1969148.721.515116.4P Pd11PlRpjmPRpj/a 116.42500-25732500260004.11076.11804.11040mmd /2573管径选用hKgGzha 6.234148.720.53116.4P Pd112PlRpj 12t1121PPPP 2系统总压力损失Pa 74386.42350453.1969
