MB POWER (Madhya Pardesh) Unit 1 & 2 (2 x 600 MW )
EPC
Lanco Infratech Limited
FO Contractor
Moser Baer Engineering & Constructions Limited
Title
Design Calculation - INSULATION THICKNESS
Doc No
LITL - 020 - MEV-213 - R - 41807
REV-0
DATE
03.08.2011
O-1107-MBFO-CL-09
REV-1
DATE
14.10.2011
CALCULATIONS FOR INSULATION THICKNESS HFO LINES FROM UNLOADING AREA TO STORAGE TANK
BASIC DATA
HFO STORAGE TANK TO LINE HEATER INLET
LINE BOILER STEAM AT 3.5 STEAM AT 13 CONDENSATE CONDENSATE HFO STORAGE HEATER RETURN TO KG/SQCM(g) KG/SQCM(g) FROM 3.5 FROM 13 & DRAIN OIL OUTLET TO STORAGE KG/SQCM(g) KG/SQCM(g) TANK BOILER TANK STEAM STEAM
Ambient temperature (min)
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
deg C
Ambient temperature (max)
42.2
42.2
42.2
42.2
42.2
42.2
42.2
42.2
42.2
deg C
Maximum cladding temperature
60
60
60
60
60
60
60
60
60
Fluid temperature
45
60
120
120
147.2
360
147.2
360
45
deg C
Mean temperature
43.6
51.1
81.1
81.1
94.7
201.1
94.7
201.1
43.6
deg C
deg C
Val Value of K fro from IS:8 S:8183 for for LRB of 8181-120 kg/cum density
0.43
0.43
0.52
0.52
0.62
0.73
0.52
0.73
0.43
mW /cm*degC
Val Value of K fro from IS:8 S:8183 for for LRB of 8181-120 kg/cum density
0.037
0.037
0.045
0.045
0.053
0.063
0.045
0.063
0.037
kcal/m*degC
Insulating material
Light resin bonded mineral wool as per IS:8183
Density
120 kg/cum
Cladding material
Aluminum sheets of 24 gauge thickness
Factor f for aluminum surface Heat loss per unit area of shell surface q=
th-tm / {d/2k*ln (d1/d) + 1/ f(d/d1)}
kcal/hr*m2
where th
deg C
Temp of hot surface
tm
deg C
Ambient temp (min) for worst case
Kcal/hr*m2
Factor for aluminum surface from IS: 7413
d
f
m
Outer dia of pipe
Insulation thickness
m
Insulation thickness
d1
m
OD of insulated pipe
k
kcal/m deg C Thermal conductivity at mean temp
4.89
Temp rise over ambient temp t=
(q*d) / (d1*f)
where q
kcal/hr*m2
d
m
d1
m
Heat loss per unit area Outer dia of pipe OD of insulated pipe
Cal Calddi dding temp tempe eratu ature at min min ambi mbient, tc
tmin+t
Cal Calddi dding temp temper era ature at max max ambie mbien nt, tc
tmax+t
Insulation thickness for HFO LINES FROM UNLOADING AREA TO HFO STORAGE TANK & DRAIN OIL LINES Pipe size
Thermal Conductivity
k
Pipe OD
Thickness of insulation
Mean dia
m
m
d
NB
OD
th-tm
d / 2k
ln(d1/d)
(d/d1)
1/f(d/d1)
{d/2k*ln (d1/d) + 1/ f(d/d1)}
d1
m
Heat loss
q
m
deg C
Temp rise
t
kcal / hr*m2
deg C
Cladding Cladding temp at temp at minimum maximum ambient temp ambient temp tc (min)
tc (max)
deg C
deg C
15
0.037
0.022
0.025
0.047
0.072
38.5
0.297
1.186
0.306
0.669
1.022
37.67
1.68
8.18
43.88
25
0.037
0.034
0.025
0.059
0.084
38.5
0.460
0.904
0.405
0.505
0.921
41.80
2.47
8.97
44.67
50
0.037
0.06
0.025
0.085
0.11
38.5
0.811
0.606
0.545
0.375
0.867
44.42
3.54
10.04
45.74
80
0.037
0.089
0.025
0.114
0.139
38.5
1.203
0.446
0.640
0.319
0.856
44.98
4.21
10.71
46.41
100
0.037
0.115
0.025
0.14
0.165
38.5
1.555
0.361
0.697
0.293
0.855
45.04
4.59
11.09
46.79
150
0.037
0.165
0.025
0.19
0.215
38.5
2.231
0.265
0.767
0.266
0.857
44.93
5.04
11.54
47.24
Insulation thickness for HFO LINES FROM STORAGE TANK TOLINE HEATER INLET Pipe size
Thermal Pipe OD Conductivity
NB
d Thickness of insulation
m
m
Mean dia
OD d1
th-tm
d/2k
m
m
deg C 53.5
ln(d1/d)
0.297
1.186
(d/d1)
0.306
1/f(d/d1)
0.669
{d/2k*ln (d1/d) + 1/ f(d/d1)}
Heat loss
Temp rise
q
t
1.022
52.35
Cladding Cladding temp at temp at minimum maximum ambient temp ambient temp tc (min)
2.34
tc (max)
15
0.037
0.022
0.025
0.047
0.072
8.84
25
0.037
0.034
0.025
0.059
0.084
53.5
0.460
0.904
0.405
0.505
0.921
58.09
50
0.037
0.06
0.025
0.085
0.11
53.5
0.811
0.606
0.545
0.375
0.867
61.73
44.54
3.44
9.94
45.64
4.92
11.42
80
0.037
0.089
0.025
0.114
0.139
53.5
1.203
0.446
0.640
0.319
0.856
62.51
5.85
12.35
47.12 48.05
100
0.037
0.115
0.025
0.14
0.165
53.5
1.555
0.361
0.697
0.293
0.855
62.59
6.38
12.88
48.58
150
0.037
0.165
0.025
0.19
0.215
53.5
2.231
0.265
0.767
0.266
0.857
62.43
7.00
13.50
49.20
Insulation thickness for HFO LINES FROM LINE HEATER TO BOILER Pipe size
Thermal Pipe OD Conductivity
NB
d Thickness of insulation
m
m
Mean dia
OD d1
th-tm
m
m
deg C
d/2k
ln(d1/d)
(d/d1)
1/f(d/d1)
{d/2k*ln (d1/d) + 1/ f(d/d1)}
Heat loss
Temp rise
q
t
Cladding Cladding temp at temp at minimum maximum ambient temp ambient temp tc (min)
tc (max)
15
0.045
0.022
0.025
0.047
0.072
113.5
0.246
1.186
0.306
0.669
0.961
118.12
5.28
11.78
47.48
25
0.045
0.034
0.025
0.059
0.084
113.5
0.380
0.904
0.405
0.505
0.849
133.68
7.91
14.41
50.11
50
0.045
0.06
0.025
0.085
0.11
113.5
0.671
0.606
0.545
0.375
0.782
145.23
11.58
18.08
53.78
80
0.045
0.089
0.025
0.114
0.139
113.5
0.995
0.446
0.640
0.319
0.763
148.75
13.92
20.42
56.12
100
0.045
0.115
0.030
0.145
0.175
113.5
1.286
0.420
0.657
0.311
0.851
133.37
12.81
19.31
55.01
150
0.045
0.165
0.030
0.195
0.225
113.5
1.845
0.310
0.733
0.279
0.851
133.37
14.30
20.80
56.50
Insulation thickness for HFO LINES FROM BOILER RETURN TO STORAGE TANK Pipe size
Thermal Pipe OD Conductivity
NB
d Thickness of insulation
m
m
Mean dia
OD d1
th-tm
m
m
deg C
d/2k
ln(d1/d)
(d/d1)
1/f(d/d1)
{d/2k*ln (d1/d) + 1/ f(d/d1)}
Heat loss
Temp rise
q
t
Cladding Cladding temp at temp at minimum maximum ambient temp ambient temp tc (min)
tc (max)
15
0.045
0.022
0.025
0.047
0.072
113.5
0.246
1.186
0.306
0.669
0.961
118.12
5.28
11.78
47.48
25
0.045
0.034
0.025
0.059
0.084
113.5
0.380
0.904
0.405
0.505
0.849
133.68
7.91
14.41
50.11
50
0.045
0.06
0.025
0.085
0.11
113.5
0.671
0.606
0.545
0.375
0.782
145.23
11.58
18.08
53.78
80
0.045
0.089
0.025
0.114
0.139
113.5
0.995
0.446
0.640
0.319
0.763
148.75
13.92
20.42
56.12
100
0.045
0.115
0.030
0.145
0.175
113.5
1.286
0.420
0.657
0.311
0.851
133.37
12.81
19.31
55.01
150
0.045
0.165
0.030
0.195
0.225
113.5
1.845
0.310
0.733
0.279
0.851
133.37
14.30
20.80
56.50
Insulation thickness for STEAM LINES OF 3.5 KG/SQCM(g) & CONDENSATE LINES Pipe size
Thermal Pipe OD Conductivity
NB
d Thickness of insulation
m
m
Mean dia
OD d1
th-tm
d/2k
m
m
deg C 140.7
ln(d1/d)
0.206
1.186
(d/d1)
0.306
1/f(d/d1)
15
0.053
0.022
0.025
0.047
0.072
0.669
25
0.053
0.034
0.025
0.059
0.084
140.7
0.319
0.904
0.405
0.505
50
0.053
0.06
0.040
0.1
0.14
140.7
0.563
0.847
0.429
0.477
80
0.053
0.089
0.040
0.129
0.169
140.7
0.835
0.641
0.527
0.388
100
0.053
0.115
0.040
0.155
0.195
140.7
1.078
0.528
0.590
150
0.053
0.165
0.040
0.205
0.245
140.7
1.547
0.395
0.673
{d/2k*ln (d1/d) + 1/ f(d/d1)}
0.914
Heat loss
Temp rise
q
t
Cladding Cladding temp at temp at minimum maximum ambient temp ambient temp tc (min) 13.38
tc (max)
153.96
6.88
0.794
177.29
10.49
16.99
52.69
0.954
147.50
9.24
15.74
51.44
49.08
0.924
152.35
11.73
18.23
53.93
0.347
0.916
153.57
13.24
19.74
55.44
0.304
0.915
153.72
15.14
21.64
57.34
Insulation thickness for STEAM LINES OF 13.0 KG/SQCM(g) & CONDENSATE LINES Pipe size
Thermal Pipe OD Conductivity
NB
d Thickness of insulation
m
m
Mean dia
OD d1
th-tm
d/2k
m
m
deg C
ln(d1/d)
(d/d1)
1/f(d/d1)
{d/2k*ln (d1/d) + 1/ f(d/d1)}
Heat loss
Temp rise
q
t
Cladding Cladding temp at temp at minimum maximum ambient temp ambient temp tc (min)
tc (max)
15
0.063
0.022
0.040
0.062
0.102
353.5
0.175
1.534
0.216
0.948
1.217
290.49
9.16
15.66
25
0.063
0.034
0.040
0.074
0.114
353.5
0.271
1.210
0.298
0.686
1.013
348.87
15.21
21.71
51.36 57.41
50
0.063
0.06
0.060
0.12
0.18
353.5
0.478
1.099
0.333
0.613
1.138
310.50
15.13
21.63
57.33
80
0.063
0.089
0.100
0.189
0.289
353.5
0.709
1.178
0.308
0.664
1.499
235.84
10.62
17.12
52.82
100
0.063
0.115
0.100
0.215
0.315
353.5
0.916
1.008
0.365
0.560
1.483
238.36
12.72
19.22
54.92
150
0.063
0.165
0.100
0.265
0.365
353.5
1.314
0.794
0.452
0.452
1.496
236.34
15.62
22.12
57.82
Insulation thickness for HFO STORAGE & DRAIN OIL TANK TANK DIA
Thermal Conductivity
m
TANK OD d
Thickness of insulation
Mean dia
OD d1
m
m
m
m
th-tm
d/2k
ln(d1/d)
(d/d1)
1/f(d/d1)
{d/2k*ln (d1/d) + 1/ f(d/d1)}
deg C
Heat loss
Temp rise
q
t
Cladding Cladding temp at temp at minimum maximum ambient temp ambient temp tc (min)
