传热实验数据处理

58.5828717 11.98541 41.80935618 12804.149 0.6996917
50.9999088 10.35773 36.39755598 11065.28 0.6996917
42.1947325 8.474728 30.11348794 9053.6475 0.6996917
1.006628 1.001656
0.0209245 0.0301143
换热计算表
1.011596
l=1.25m
ρ（进口）=1.085916kg*m-3
qm=
换热速率Q=
u
{ρ(进口)*qv}
{qm*Cp*△ t/3600}
/kg*h-1
Q/W
/m*s-1
61.42749926 376.16073 45.36653803
84.67353129 4.3730836 1.927747672
73.90636734 4.306938 1.868681856
64.99455113 4.2506204 1.812876949
56.80841 4.1853763 1.754412634
48.22928222 4.1073507 1.683310799
99.2818336 35.10377 71.29267061 38028.366 0.6988689
90.8958536 30.784782 65.27083471 33349.551 0.6988689
80.5149686 26.049199 57.81648996 28219.433 0.6988689
tw1
/oC
100.7 100.9 101.1 101.4 101.5 101.5 101.8
102 102.3 102.4 102.5
换热计算表
Si=π dl=0.082
47m2
tw2
qv=
{25.2*△P0.54}
/oC
/m3*h-1
100.4 42.129123
100.5 39.419554
100.8 34.509699
Δtmi
αi
/oC
W/(m2*oC)
35.48318124 147.559954
34.57573497 139.162939
33.27752453 125.048111
32.73064104 114.025435
32.00966934 102.850766
31.10208352 89.7721682
压比热 kj*kg-1*oC-1
1.007656 1.001152
0.021245 0.030563
换热计算表
1.01416
l=1.25m
ρ（进口）=1.089822kg*m-3
qm=
换热速率Q=
u
{ρ(进口)*qv}
{qm*Cp*△ t/3600}
/kg*h-1
Q/W
/m*s-1
45.91324454 431.80439 33.78714139
41.98648723 4.0439624 1.623109541
34.7374856 3.9568236 1.54079838
普通传热
空气
空气导
粘度
热系数
/mPa*s
W*m-1*oC-1
0.0203035 0.0292449
0.019682 0.0283748
空气定
压比热 kj*kg-1*oC-1
空气性质表 空气平均温度t/oC 空气进口温度t/oC
空气出口温
度t/oC
强化传热
空气
66.64 50.38
密度
kg*m-3
1.039416 1.089822
82.9 0.98901
d=0.021m
空气进口 空气出口
温度
t1/℃
45.70 47.10 48.80 49.60 50.50 51.60 51.90 52.30 52.40 52.40 51.90
Nu/Pr0.4
lgRe
lg(Nu/Pr0.4)
121.4810824 4.5574492 2.084508653
114.5681061 4.5285785 2.059063734
102.9478491 4.470808 2.012617277
93.87325553 4.4262087 1.972541879
55.70825336 350.4843 41.14265801
47.53143901 309.67303 35.10377048
41.68341377 278.56573 30.78478204
35.27130785 242.61809 26.04919862
28.66863938 198.80407 21.17287753
空气性质表 空气平均温度t/oC 空气进口温度t/oC
空气出口温
度t/oC
普通传热
空气
64.07 51.64
密度
kg*m-3
1.047383 1.085916
76.49 1.008881
d=0.021m
空气进口 空气出口
温度
t1/℃
51.20 50.90 51.40 51.90 52.20 52.40 52.30 52.10 51.40 50.60
38.62062958 110.040669
37.82140041 99.2818336
37.1610194 90.8958536
36.53848649 80.5149686
36.18303819 66.6230089
36.32208844 51.4166055
36.26808456 41.9564343
34.9891753 10.163304 25.12515794 11010.038 0.6988689
27.2671337 7.7626855 19.58008541 8409.4172 0.6988689
lg(Nu/Pr0.4) 2.5 2
y = 0.9059x - 2.0389
1.5 y = 0.8381x - 1.9243
89.7721682 18.97755 64.06849727 20273.931 0.6996917
78.9472137
16.6695 56.34295625 17808.215 0.6996917
69.0037181 14.34427 49.2464938 15324.145 0.6996917
温度
t2/℃
79.30 80.10 81.40 82.00 82.80 83.50 83.80 84.40 84.90 85.10 85.20
Cp=1.007656kj*kg-1*oC-1
孔板
压降
△P/kPa
2.59 2.29 1.79 1.48 1.18 0.89 0.7 0.53 0.38 0.29 0.2
μ（平均）=0.020432mPa*s Cp（平均）=1.007656kj*kg-1*oC-1
α(W/(m2*oC)) u/m*s-1
Nu
Re
Pr
147.559954 33.78714 105.3104175 36095.183 0.6996917
139.162939 31.61409 99.31764551 33773.689 0.6996917
66.6230089 21.172878 47.84089955 22936.851 0.6988689
51.4166055 16.015584 36.92142849 17349.888 0.6988689
41.9564343 12.650981 30.12823335 13704.971 0.6988689
1
0.5
0 3.8 4 4.2 4.4 4.6 4.8
强化传热 普通传热 线性 线性
普通传热 m=0.838 强化传热 m=0.905
A=0.012 A=0.009
强化传热
空气
空气导
粘度
热系数
/mPa*s
W*m-1*oC-10.0源自0432 0.02942480.019619 0.0282866
空气定
82.2785439 4.5801077 1.915286597
75.32877073 4.52309 1.87696088
66.72574567 4.4505483 1.824293436
55.21296257 4.3605338 1.742041051
42.61085115 4.2392967 1.629520209
42.96029668 396.81767 31.61409377
37.60942972 343.18172 27.67643917
33.93887465 307.7884 24.97531089
30.03117989 271.5093 22.09967366
25.78853759 230.26461 18.97755157
125.048111 27.67644 89.24419137 29567.053 0.6996917
114.025435 24.97531 81.3775407 26681.405 0.6996917
102.850766 22.09967 73.40241584 23609.327 0.6996917
36.53839592 34.9891753
37.24903908 27.2671337
算表
.0203035mPa*s
.006628kj*kg-1*oC-1 d=0.021m
Nu/Pr0.4
lgRe
lg(Nu/Pr0.4)
98.03963809 4.6914895 1.991401699
91.1947905 4.6490463 1.95997003
101.8 38.385486
101.8 32.480696
101.9 26.400421
102.3 19.969802
102.6 15.774484
102.9 12.672604
103.4 9.6792779
准数计算表
λ（平均）=0.0292445W*m-1*oC-1 ρ（平均）=1.047383kg*m-3
温度
t2/℃
73.10 73.40 74.70 75.80 76.80 77.20 77.70 78.30 78.80 79.10
Cp=1.006628kJ*kg-1*oC-1
孔板
压降
△P/kPa
4.47 3.73 2.78 2.18 1.6 1.09 0.65 0.42 0.28 0.17
tw1
/oC
μ（平均）=0.0203035mPa*s Cp（平均）=1.006628kj*kg-1*oC-1
α(W/(m2*oC)) u/m*s-1
Nu
Re
Pr
118.30004 45.366538 84.94933543 49146.155 0.6988689
110.040669 41.142658 79.01841539 44570.371 0.6988689
21.68552723 154.01755 16.01558435
17.1297644 125.49291 12.65098071
13.76138388 105.43363 10.16330394
10.51088272 83.762678 7.762685549
Δtmi
αi
/oC
W/(m2*oC)
38.55605321 118.30004
101.9 102.1 102.3 102.6 102.8 102.7 103.1 103.3 103.6 104.2
换热计算表
Si=π dl=0.082
47m2
tw2
qv=
{25.2*△P0.54}
/oC
/m3*h-1
101.5 56.56745
101.5 51.300702
101.7 43.770825
31.06538418 78.9472137
30.77594669 69.0037181
30.66660915 58.5828717
30.62973106 50.9999088
30.84694114 42.1947325
算表
.020432mPa*s
.007656kj*kg-1*oC-1 d=0.021m
34.77085582 4.1368781 1.54121538
22.6521304 202.25978 16.66949788
19.4923895 175.13781 14.34427313
16.28693089 148.16049 11.98540513
14.07508513 128.8275 10.35772784
11.51628248 107.34117 8.474728117
100.7 31.141668
101 27.556041
101 23.663073
101.2 20.785165
101.6 17.885847
101.8 14.944579
101.9 12.915031
102 10.567122
准数计算表
λ（平均）=0.029425W*m-1*oC-1 ρ（平均）=1.039416kg*m-3