燃燒系統(tǒng)計算

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序號,項目,根據(jù),公式及計算,符號,單位,設計煤,校核煤,備注

1,鍋爐蒸汽參數(shù),,,,,,,2

,過熱蒸汽流量,,☆,Dgr,t/h,480,480,3

,過熱蒸汽出口壓力,,☆,Pgr,MPa(a),13.73,13.73,4

,過熱蒸汽出口溫度,,☆,Tgr,℃,540,540,5

,鍋筒壓力,,☆,Peq,MPa(a),15.2,15.2,6

,給水溫度,,☆,Tgs,℃,240,240,7

,給水壓力,,☆,Pgs,MPa(a),15.8,15.8,8

,再熱蒸汽流量,,☆,Dzr,t/h,431,431,9

,再熱蒸汽進口壓力,,☆,Pzrj,MPa(a),4.2,4.2,10

,再熱蒸汽出口壓力,,☆,Pzrc,MPa(a),3.96,3.96,11

,再熱蒸汽進口溫度,,☆,Tzrj,℃,370,370,12

,再熱蒸汽出口溫度,,☆,Tzrc,℃,540,540,13

,鍋爐效率,,☆,ηg,%,91.35,91.35,14

,機械未燃燒損失,(2)P54,表2-1或鍋爐廠資料,q4,%,1.5,1.5,15

,,,,,,,,16

2,燃料特性,,,,,,,17

1),煤,,,,,,,18

,收到基碳份,,☆,Car,%,52.39,48.52,19

,收到基氫份,,☆,Har,%,3.93,3.65,20

,收到基氧份,,☆,Oar,%,4.36,4.39,21

,收到基氮份,,☆,Nar,%,1.5,1.8,22

,收到基硫份,,☆,Sar,%,1.4,1.7,23

,收到基灰份,,☆,Aar,%,29.42,31.94,24

,收到基水份,,☆,Mar,%,7,8,25

,內(nèi)在水份(空氣干燥基水分),,☆,Mad,%,1.18,0.93,26

,,,,,,,,27

,干燥無灰基揮發(fā)份,,☆,Vdaf,%,39.47,35,28

,收到基低位發(fā)熱量,,☆,Qnet,kJ/kg,21318,19646,29

,可磨系數(shù),,,Kvl,,,,30

,哈氏可磨系數(shù),,,HGI,,77,65.16,31

,,,,,,,,32

3,燃料耗量,,,,,,,33

,過熱蒸汽焓,,查水蒸汽表,igr,kJ/kg,3435,3435,34

,再熱汽入口焓,,查水蒸汽表,izr1,kJ/kg,3136.6,3136.6,35

,再熱汽出口焓,,查水蒸汽表,izr2,kJ/kg,3535.1,3535.1,36

,汽包內(nèi)飽和水焓,,查水蒸汽表,ibs,kJ/kg,1617.8,1617.8,37

,給水焓,,查水蒸汽表,igs,kJ/kg,1039.4,1039.4,38

,鍋爐排污率,,按規(guī)程取,αpw,,0.02,0.02,39

,鍋爐排污量,,αpw*Dgr,Dpw,t/h,9.6,9.6,40

,蒸汽每小時吸熱量,,(Dgr(igr-igs)+Dzr(izr2-izr1)+Dpw(ibs-igs))*1000,igDg,kJ/h,1327194140,1327194140,41

,,,,,,,,42

,每公斤煤送入爐內(nèi)的熱量,(2)P41,Qnet+Qr+Qwl+Qwh(后三項為零),Qg,kJ/kg,21318,19646,43

,,,,,,,,44

,鍋爐煤消耗量,,igDg*100/(ηgQg),Bg,kg/h,68152.13192,73952.31336,45

,鍋爐燃料消耗量(按鍋爐廠值),,,Bg,kg/h,,,46

,計算燃料消耗量,(2)P8,Bg*(100-q4)/100,Bj,kg/h,67129.84994,72843.02866,47

,計算燃料消耗量(按鍋爐廠值),,,Bj,kg/h,,,48

,,,,,,,,49

4,理論空氣量計算,,,,,,,50

,煤燃燒理論空氣量,(2)P60,0.0889(Car+0.375Sar)+0.265Har-0.0333Oar,Vo,Nm3/kg,5.6004055,5.19116475,51

,,,,,,,,52

5,燃燒產(chǎn)物體積計算,,,,,,,53

,氮氣體積,(2)P60,0.79Vo+0.008Nar,VN2,Nm3/kg,4.436320345,4.115420153,54

,二氧化物體積,,1.866(Car+0.375Sar)/100,VRO2,Nm3/kg,0.9873939,0.91727895,55

,水蒸汽體積,,0.111Har+0.0124Mar+0.0161Vo,VH2O,Nm3/kg,0.613196529,0.587927752,56

,總和,,VN2+VRO2+VH2O,Vyo,Nm3/kg,6.036910774,5.620626855,57

,燃燒產(chǎn)物實際體積,,Vyo+0.0161(α-1)Vo+(α-1)Vo,Vyw,Nm3/kg,,,58

,,,,,,,,59

6,空氣和煙氣參數(shù),,,,,,,60

,爐膛出口過剩空氣系數(shù),,取,αl,,1.25,1.25,61

,鍋爐進口空氣溫度,,鍋爐廠資料,Tki,℃,20,20,62

,空氣預熱器出口熱風溫度,,☆,Tky,℃,316,316,63

,鍋爐排煙溫度,,☆,Tpy,℃,133,133,64

,送風機進口空氣溫度,,☆,Txf,℃,20,20,65

,環(huán)境空氣溫度,,☆,Tlk,℃,20,20,66

,環(huán)境大氣壓,,☆,Pa,kPa,101.62,101.62,67

,鍋爐尾部受熱面漏風系數(shù),,☆,△αwb,,0.05,0.05,68

,空氣預熱器漏風系數(shù),,☆,△αky,,0.15,0.15,69

,,,,,,,,70

7,鍋爐各處空氣量計算,,,,,,,71

,一次風(燃煤)份額,,鍋爐廠資料,r1k,,0.28,0.28,72

,鍋爐爐膛漏風系數(shù),,鍋爐廠資料,△αl,,0.05,0.05,73

,以g1表示的制粉系統(tǒng)漏風系數(shù),(6)P69,查表6.2.1,Kle,,0.3,0.3,74

,以Vo表示的制粉系統(tǒng)漏風系數(shù),(2)P3,Kle*g1/1.285/Vo,△αzf,,0.072240451,0.082621461,75

,以Vo表示的磨煤機入口吸冷風漏風系數(shù),,Rla*g1/1.285/Vo,△αla,,0.036256685,0.040599951,76

,吸風道過?？諝庀禂?shù),(2)P61,αl-△αl-△αzf+△αky-△αla,αxf,,1.241502864,1.267378539,77

,吸風道空氣量,,1.016αxf*Bj*Vo*101.3/Pa*(273+Txf)/273,Vxf,m3/h,507354.8445,520940.4628,78

,送風機進口處過?？諝庀禂?shù),,αsj=αxf,αsj,,1.24150,1.26738,79

,送風機進出口處空氣量,(2)P61,Vsj=Vxf,Vsj,m3/h,507354.8445,520940.4628,80

,空預器進口處過?？諝庀禂?shù),,α'ky=αsj,α'ky,,1.241502864,1.267378539,81

,空預器進口處空氣量,,Vsj(273+Tki)/(273+Txf),V'ky,m3/h,507354.8445,520940.4628,82

,空預器出口處過?？諝庀禂?shù),,α'ky-△αky,α''ky,,1.091502864,1.117378539,83

,空預器出口處空氣量(二分倉),,α''kyBj*Vo*101.3/Pa*(273+Tky)/273,V''ky,m3/h,882557.3414,908732.4468,84

,二次風流量,(2)P61,(α''ky-βzx-Rha*g1/1.285/Vo)BjVo*,V2k,m3/h,731867.0752,714277.8532,85

,,,(273+Tky)/273,,,,,86

,,,,,,,,87

,熱風再循環(huán),,,,,,,88

,空氣預熱器進口允許的進風溫度,,鍋爐廠資料,t''2,℃,10,10,89

,空氣在預熱器進口允許的進風溫度下的比熱,(6)P81,根據(jù)t''2查圖6.5.1,C''2,kJ/kg.℃,1.011,1.011,90

,吸風道空氣溫度,,按冬季采暖室外計算溫度,t'2,℃,-8,-8,91

,空氣在吸風道空氣溫度下的比熱,(6)P81,根據(jù)t'2查圖6.5.1,C'2,kJ/kg.℃,1.011,1.011,92

,空預器出口的空氣比熱,(6)P81,根據(jù)tky查圖6.5.1,Cky,kJ/kg.℃,1.03,1.03,93

,熱風再循環(huán)空氣系數(shù),(2)P46,αxf*(C''2*t''2-C'2*t'2)/(Cky*Tky-C''2*t''2),βzx,,0.071639246,0.073132367,94

,熱風再循環(huán)空氣流量(在Tky下),(2)P61,βzx*Bj*Vo*(273+Tky)/273*101.3/Pa,Vzx,m3/h,57925.40256,59476.49135,95

,考慮熱風再循環(huán)后送風機進出口風量(換算到Txf狀態(tài)),,Vzx*(273+Txf)/(273+Tky)+Vsj,V'sj,m3/h,536170.0277,550527.2404,96

,考慮熱風再循環(huán)后送風機進出口風量(換算到T''2狀態(tài)),,Vzx*(273+t''2)/(273+Tky)+Vsj*(273+t''2)/(273+Txf),V''sj,m3/h,517870.7094,531737.9148,97

,考慮熱風再循環(huán)后空預器出口風量,,Vzx+V''ky,V'''ky,m3/h,940482.7439,968208.9382,98

,,,,,,,,99

8,鍋爐各處煙氣量計算,,,,,,,100

1),空預器出口煙氣過剩空氣系數(shù),,αl+αky+αwb,αpy,,1.45,1.45,101

,空預器出口每kg煤的煙氣量,(2)P61,Vyo+0.0161(αpy-1)Vo+(αpy-1)Vo,Vpy1,Nm3/kg,8.597668186,7.994260981,102

,空預器出口煙氣量,,Vpy1*Bj*101.3/Pa*(273+Tpy)/273,Vpy,m3/h,855637.87,863296.456,103

2),空預器出口至除塵器前煙道,,,,,,,104

,長度,,,L1,m,36,36,105

,煙道每10m漏風系數(shù),(2)P2,,△αyd,,0.01,0.01,106

,空預器出口至除塵器前煙道,,,,,,,107

,漏風系數(shù),(2)P2,L1*△αyd/10,△α'yd,,0.036,0.036,108

,除塵器進口處煙氣溫度,(2)P9,(αpyTpy+△α'yd*Tlk)/(αpy+△α'yd),Tcc,℃,130.2624495,130.2624495,109

,除塵器進口處每kg煤的煙氣量,(2)P61,Vpy1+△α'yd*Vo,V'cc,Nm3/kg,8.799282784,8.181142912,110

,除塵器進口處煙氣量,,V'cc*Bj*101.3/Pa*(273+Tcc)/273,Vcc,m3/h,869797.8762,877520.6907,111

,,,,,,,,112

3),除塵器至吸風機前煙道,,,,,,,113

,除塵器漏風系數(shù),,雙室四電場,△αc,,0.1,0.1,114

,煙道長度,,,L2,m,34,34,115

,除塵器和煙道漏風系數(shù),(2)P9,△αc+△αyd*L2/10,△α''yd,,0.134,0.134,116

,吸風機進口處煙溫,,(αpyTpy+(△α'yd+△α''yd)Tlk)/,Txj,℃,121.1419753,121.1419753,117

,,,(αpy+△α'yd+△α''yd),,,,,118

,吸風機進口處每kg煤煙氣量,(2)P61,Vpy1+(△α'yd+△α''yd)*Vo,Vxj1,Nm3/kg,9.549737121,8.876758989,119

,吸風機進口處煙氣量,,Vxj1*Bj*101.3/Pa*(273+Txj)/273,Vxj,m3/h,922629.613,930599.2961,120

,吸風機出口處煙氣量,,Vxc=Vxj,,,922629.613,930599.2961,121

,,,,,,,,122

9,煙風道截面計算,,,,,,,123

1),各處風速推薦值,(3)P3,,,,,,124

,送風機吸風道，出口冷風道1,,下限,Wxf1,m/s,10,10,125

,送風機吸風道，出口冷風道2,,上限,Wxf2,m/s,12,12,126

,二次風道1,,下限,W2k1,m/s,15,15,127

,二次風道2,,上限,W2k2,m/s,25,25,128

,熱風管1,,下限,W1k1,m/s,15,15,129

,熱風管2,,上限,W1k2,m/s,25,25,130

,熱風再循環(huán)管道1,,下限,Wzx1,m/s,25,25,131

,熱風再循環(huán)管道2,,上限,Wzx2,m/s,35,35,132

,空氣預熱器至煙囪風道1,,下限,Wpy1,m/s,10,10,133

,空氣預熱器至煙囪風道2,,上限,Wpy2,m/s,15,15,134

2),風道截面選擇,,,,,,,135

a,送風機進口風道,,,,,,,136

,風道根數(shù),,,Nxf,根,2,2,137

,計算截面1,,V'sj/Nxf/Wxf1/3600,Fxf1,m2,7.446805941,7.646211672,138

,計算截面2,,V'sj/Nxf/Wxf2/3600,Fxf2,m2,6.205671617,6.37184306,139

,選擇截面,,選3000X2000X3,Fs,m2,5.970036,5.970036,140

,送風機進口風道實際流速,,V'sj/Nxf/Fs/3600,Wxf,m/s,12.47363658,12.80764751,141

b,送風機出口至空預器冷風道,,,,,,,142

,風道根數(shù),,,N2k,根,2,2,143

,計算截面1,,V'sj/N2k/Wxf1/3600,Fk1,m2,7.446805941,7.646211672,144

,計算截面2,,V'sj/N2k/Wxf2/3600,Fk2,m2,6.205671617,6.37184306,145

,選擇截面,,選3000X2000X3,Fs,m2,5.970036,5.970036,146

,送風機出口至空預器冷風道實際流速,,V'sj/N2k/Fs/3600,Wk,m/s,12.47363658,12.80764751,147

,,,,,,,,148

c,預熱器出口風道,,,,,,,149

,風道根數(shù),,,Nrk,根,2,2,150

,計算截面1,,V''ky/Nrk/W1k1/3600,Frkj1,m2,8.171827235,8.414189323,151

,計算截面2,,V''ky/Nrk/W1k2/3600,Frkj2,m2,4.903096341,5.048513594,152

,選擇截面,,選2200X3000X3,Frk,m2,6.568836,6.568836,153

,預熱器出口風道實際流速,,V''ky/Nrk/Frk/3600,Wrk,m/s,18.66044586,19.21388201,154

d,至爐二次風道,,,,,,,155

,風道根數(shù),,,N2k,根,2,2,156

,計算截面1,,V2k/N2k/W2k1/3600,F2k1,m2,6.776546992,6.613683826,157

,計算截面2,,V2k/N2k/W2k2/3600,F2k2,m2,4.065928195,3.968210296,158

,選擇截面,,選2200X2200X3,F2k,m2,4.813636,4.813636,159

,至爐二次風道實際流速,,V2k/N2k/F2k/3600,W2k,m/s,21.11672027,20.60921461,160

,,,,,,,,161

e,熱風再循環(huán)管道(每爐2根),,,,,,,162

,風道根數(shù),,,Nzx,根,2,2,163

,計算截面1,,Vzx/Nzx/Wzx1/3600,Fzx1,m2,0.321807792,0.330424952,164

,計算截面2,,Vzx/Nzx/Wzx2/3600,Fzx2,m2,0.229862709,0.236017823,165

,熱風再循環(huán)管道(每爐2根)選擇截面,,選φ530×3,Fzx,m2,0.21554216,0.21554216,166

,熱風再循環(huán)管道實際流速,,Vzx/Nzx/Fzx/3600,Wzx,m/s,37.32538822,38.32486322,167

,,,,,,,,168

3),煙道截面選擇,,,,,,,169

a,除塵器前煙道,,,,,,,170

,煙道根數(shù),,,N'pk,根,2,2,171

,計算截面1,,Vcc/N'pk/Wpy1/3600,F'pk1,m2,12.08052606,12.18778737,172

,計算截面2,,Vcc/N'pk/Wpy2/3600,F'pk2,m2,8.053684039,8.125191581,173

,選擇截面,,選3000*3200*5,F'pk,m2,9.5381,9.5381,174

,除塵器前煙道實際流速,,Vcc/N'pk/F'pk/3600,W'pk,m/s,12.66554771,12.77800335,175

b,除塵器后煙道,,,,,,,176

,煙道根數(shù),,,N''pk,,2,2,177

,計算截面1,,Vxj/N''pk/Wpy1/3600,F''pk1,m2,12.81430018,12.92499022,178

,計算截面2,,Vxj/N''pk/Wpy2/3600,F''pk2,m2,8.542866787,8.616660149,179

,選擇截面,,選3000*3200*5,F''pk,m2,9.5381,9.5381,180

,除塵器后煙道實際流速,,Vxj/N''pk/F''pk/3600,W''py,m/s,13.43485619,13.5509066,181

c,單爐磚煙道,,,,,,,182

,單個引風機接入段,,,,,,,183

,煙道根數(shù),,,N'''pk,,1,1,184

,計算內(nèi)截面1,,Vxj/2/N'''pk/Wpy1/3600,F'''pk1,m2,12.81430018,12.92499022,185

,計算內(nèi)截面2,,Vxj/2/N'''pk/Wpy2/3600,F'''pk2,m2,8.542866787,8.616660149,186

,選擇內(nèi)截面,,選3000*4000,F'''pk,m2,12,12,187

,磚煙道實際流速,,Vxj/2/N'''pk/F'''pk/3600,W'''py,m/s,10.67858348,10.77082519,188

,兩個引風機接入段,,,,,,,189

,煙道根數(shù),,,N''''pk,,1,1,190

,計算內(nèi)截面1,,Vxj/N''''pk/Wpy1/3600,F''''pk1,m2,25.62860036,25.84998045,191

,計算內(nèi)截面2,,Vxj/N''''pk/Wpy2/3600,F''''pk2,m2,17.08573357,17.2333203,192

,選擇內(nèi)截面,,選5500*4000,F''''pk,m2,22,22,193

,磚煙道實際流速,,Vxj/N''''pk/F''''pk/3600,W''''py,m/s,11.6493638,11.74999111,194

,,,,,,,,195

10,煙氣酸露點計算,,,,,,,196

1),除塵器進口水蒸汽的酸露點,,,,,,,197

a,除塵器進口煙氣中的濕份量,(2)P10,(VH2O+0.0161(αpy-1)Vo)*0.804Bj/3600,G',kg/s,9.801559631,10.17642087,198

,除塵器進口煙氣比重,,(1-0.01Aar+1.306αpyVo)*273/Vpy1/(273+Tpy),r'c,kg/m3,0.884642886,0.884111049,199

b,除塵器進口煙氣重量流量,,Vpy*r'c/3600,G'y,kg/s,210.2594319,212.0138709,200

c,除塵器進口煙氣含濕量,,G'*1000/(G'y-G'),d'',g/kg,48.89585787,50.41889337,201

d,除塵器進口水蒸汽露點溫度,(2)P63,由d=d''查表2-10,T水ld,℃,39.05,40.3,202

,,,,,,,,203

2),除塵器進口煙氣酸露點溫度,(2)P39,,,,,,204

,燃料折算硫分,,1000*Sar/(Qnet/4.186),Ss,g/kcal,0.274903837,0.362221317,205

,燃料折算灰分,,1000*Aar/(Qnet/4.186),As,g/kcal,5.776907777,6.805499338,206

,系數(shù),,由鍋爐原理查得,B,,121,121,207

,飛灰份額,,,Afh,,0.9,0.9,208

,除塵器進口煙氣酸露點溫度,,"T水ld+B*power(Ss,1/3)/power(1.05,Afh*As)",Tld,℃,100.0989,104.2725,209

,,,,,,,,210

11,煤的爆炸性指數(shù),,,,,,,211

,揮發(fā)分中的含硫量,,Sar.v=0.7Sar,Sar.v,%,0.98,1.19,212

,煤的收到基揮發(fā)分,(6)P187,(100-Mar-Aar)/100*Vdaf,Var,%,25.095026,21.021,213

,煤的揮發(fā)分含碳量,(6)P15,Var-(Har+Oar+Sar.v+Nar),Car.v,%,19574.1876,17891.6122,214

,煤中剩余焦碳,(6)P15,Car-Car.v,Car.f,%,0,0,215

,煤的爆炸性指數(shù),(6)P15,100(Var+Sar.v)/(Car.f+Aar+Mar),Bc,,46.6081,42.354,216

,,,,,,,,217

12,燃燒系統(tǒng)計數(shù)成果統(tǒng)計表,,,,,,,218

1),煙風參數(shù),,,,,,,219

,燃料消耗量,,,Bg,kg/h,68152.13192,73952.31336,220

,計算燃料消耗量,,,Bj,kg/h,67129.84994,72843.02866,221

,理論空氣量,,,Vo,Nm3/h,5.6004055,5.19116475,222

,一次風份額,,,r1k,,0.28,0.28,223

,爐膛出口過剩空氣系數(shù),,,αl,,1.25,1.25,224

,送風機進出口空氣量,,,Vsj,m3/h,536170.0277,550527.2404,225

,空氣預熱器漏風系數(shù),,,△αky,,0.15,0.15,226

,空氣預熱器出口處空氣量,,,V''ky,m3/h,940482.7439,968208.9382,227

,二次風(燃煤)流量,,,V2k,m3/h,731867.0752,714277.8532,228

,空氣預熱器出口煙氣量,,,Vpy,m3/h,855637.87,863296.456,229

,除塵器進口煙氣溫度,,,Tcc,℃,130.2624495,130.2624495,230

,除塵器進口煙氣量,,,Vcc,m3/h,869797.8762,877520.6907,231

,吸風機進口煙氣量,,,Vxj,m3/h,922629.613,930599.2961,232

2),煙風道截面,,,,,,,233

,送風機進口風道,,選3000X2000X3,FS,m2,5.970036,5.970036,234

,送風機出口至空預器冷風道,,選3000X2000X3,Fs,m2,5.970036,5.970036,235

,空氣預熱器出口風道,,選2200X3000X3,Frk,m2,12.47363658,12.80764751,236

,至爐二次風道(每爐兩根),,選2200X2200X3,F2k,m2,4.813636,4.813636,237

,熱風再循環(huán)管道(每爐2根)選擇截面,,選φ530×3,Fzx,m2,0.21554216,0.21554216,238

,除塵器前煙道,,選3000*3200*5,F'pk,m2,9.5381,9.5381,239

,除塵器后煙道,,選3000*3200*5,F''pk,m2,9.5381,9.5381,240

,單臺引風機接入段磚煙道,,選3000*4000,F'''pk,m2,12,12,241

,兩臺引風機接入段磚煙道,,選5500*4000,F''''pk,m2,22,22,242

3),煙風道流速,,,,,,,243

,送風機進口風道實際流速,,,Wxf,m/s,12.47363658,12.80764751,244

,送風機出口至空預器冷風道實際流速,,,Wk,m/s,12.47363658,12.80764751,245

,預熱器出口風道實際流速,,,Wrk,m/s,18.66044586,19.21388201,246

,至爐二次風道實際流速,,,W2k,m/s,21.11672027,20.60921461,247

,熱風再循環(huán)管道實際流速,,,Wzx,m/s,37.32538822,38.32486322,248

,除塵器前煙道實際流速,,,W'pk,m/s,12.66554771,12.77800335,249

,除塵器后煙道實際流速,,,W''py,m/s,13.43485619,13.5509066,250

4),除塵器進口煙氣酸露點溫度,,,Tld,℃,100.0989043,104.2724997,251

5),煤的爆炸性指數(shù),,,Bc,,46.6081,42.354,252

6),煙氣比重,,,,,,,255

,1kg燃料生成理論煙氣的重量,(9)P23,1-Aar/100+(1+d/1000)*1.293*α*Vo,Gyo,kg/kg,7.947124312,7.392776022,256

,爐膛出口1kg燃料生成理論煙氣的重量,,,,kg/kg,9.757455389,9.070820027,257

,空予器出口1kg燃料生成理論煙氣的重量,,,,kg/kg,11.20572025,10.41325523,258

,除塵器進口1kg燃料生成理論煙氣的重量,,,,kg/kg,11.46640793,10.65489357,259

,引風機進口1kg燃料生成理論煙氣的重量,,,,kg/kg,12.43674538,11.55432516,260

,爐膛出口煙氣比重,,Gyo/V,γyo,kg/m3,0.765530067,0.765375554,263

,空予器出口煙氣比重,,,,kg/m3,0.879155009,0.878647241,264

,除塵器進口煙氣比重,,,,kg/m3,0.899607498,0.899036145,265

,,,,,,,,266

,,,,,,,,,

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