ZISH ZISHA AN EN ENGIN GINEER EERS (P (PVT) VT) LIM LIMIT ITED ED Fuel Oil Tank OOTCL 0
TANK DETAILS Tank Height Tank Diameter Area of Tank Walls Area of Tank Top Tank Volume Density of Fluid in Tank Mass of Fluid in tank
= =
85.31 65.62
= = = = =
17586 3382 288497.4 58.8 16,110,515
26 20
ft ft 2 ft 2 ft ft3 3 lb/ft lb
942.7
OPERATING PARAMETERS Specific Heat of Fluid in Tank Initial Fluid Temperature (Inside Tank) T1 Final Fluid Temperature (Inside Tank) T2 Surrounding Air Temperature Steam Quality Temperature of Steam Temperature of Steam at Saturation Pressure of Steam Latent Heat of Steam Mean Temperature Difference
= = =
HEAT TRANSFER RATES Heat Transfer Rate (From Insulated Tank W alls to Air) Heat Transfer Rate (From Insulated Tank Top to Air) Heat Transfer Rates of Coil
= = =
0.83036 0.505435 21
BTU/hr/ft /F BTU/hr/ft 2/F 2 BTU/hr/ft /F
HEAT LOSS & STEAM REQUIREMENT Heat Loss to Atmosphere from Tank Sides Heat Loss to Atmosphere from Tank Top Total Heating Requirement Steam Requirement
= = = =
788,558 92,306 881,151 1,009
BTU/hr BTU/hr BTU/hr Lbs/hr
COIL DETAILS Tube O.D. Outside Surface Area Surface Required for Heating Coil Length Required
= = = =
= = = = = =
0.43 Btu/lb/F 104 F 104.001 F 50 F Saturated Steam at 8 barg. 347.62 F 347.61 F 116 psig 872.97 BTU/Lb 243.6 F .
2.375 0.622 172 277
m m
2
Input Values Calculated Values
kg/m3 (from Hysys, FO) 95 % Filled of Tank Volume
(from Hysys, FO) 40.0 C 40.0 C 10.0 C 175. 175.3 3 C 175. 175.3 3 C
135. 135.3 3 C
From Spirax Sarco Module "Energy Consumption of Tanks and Vats" From Spirax Sarco Module "Energy Consumption of Tanks and Vats" From Ernest E. Ludwig Vol-3
in 2 ft /ft of pipe length ft2 ft
458 Kg/hr
84 m
Note: 1. Heat transfer rates for atmospheric losses are taken for Wind Velocities of 36 Km/hr. Km/hr.
FILE: 112745981.xlsx.ms office
SHEET 2 OF 1
ZISHAN ENGINEERS (PVT.) LTD.
OOTCL
Determination of Steam Requirement & Heating Coil Sizing For Un-Insulated Fuel Oil Tanks CONSULTANT: EQUIPMENT: CLIENT: REVISION:
Prepared By:
HZ
Checked By:
QAS
Date:
12/1/2012
ZISHAN ENGINEERS (PVT) LIMITED Fuel Oil Tank OOTCL 0
TANK DETAILS Tank Height Tank Diameter Area of Tank Walls Area of Tank Top Tank Volume Density of Fluid in Tank Mass of Fluid in tank
= =
85.31 65.62
= = = = =
17586 3382 288497.4 58.8 16,110,515
OPERATING PARAMETERS Specific Heat of Fluid in Tank Initial Fluid Temperature (Inside Tank) T1 Final Fluid Temperature (Inside Tank) T2 Surrounding Air Temperature Steam Quality Temperature of Steam (super heated) Temperature of Steam at Saturation Pressure of Steam Latent Heat of Steam Mean Temperature Difference
= = =
HEAT TRANSFER RATES Heat Transfer Rate (From Tank Walls to Air) Heat Transfer Rate (From Tank Top to Air) Heat Transfer Rates of Coil
= = =
8.3036 5.05435 21
HEAT LOSS & STEAM REQUIREMENT Heat Loss to Atmosphere from Tank Sides Heat Loss to Atmosphere from Tank Top Total Heating Requirement Steam Requirement
= = = =
7,885,585 923,059 8,808,926 10,091
COIL DETAILS Tube O.D. Outside Surface Area Surface Required for Heating Coil Length Required
= = = =
= = = = = =
ft ft 2 ft 2 ft 3 ft 3 lb/ft lb
26 20
m m
942.7
0.42 Btu/lb/F 104 F 104.001 F 50 F Saturated Steam at 8 barg. 347.62 F 347.61 F 116 psig 872.97 BTU/Lb 243.6 F
Input Values Calculated Values
kg/m3 (from Hysys, FO) 95 % Filled of Tank Volume
(from Hysys, FO) 40.0 C 40.0 C 10.0 C 175.3 C 175.3 C
135.3 C
2
BTU/hr/ft /F 2 BTU/hr/ft /F 2 BTU/hr/ft /F
From Spirax Sarco Module "Energy Consumption of T anks and Vats" From Spirax Sarco Module "Energy Consumption of T anks and Vats" From Ernest E. Ludwig Vol-3
BTU/hr BTU/hr BTU/hr Lbs/hr
2.375 in 2 0.622 ft /ft of pipe length 2 1722 ft 2768 ft
4,578 Kg/hr
844 m
Note: 1. Heat transfer rates for atmospheric losses are taken for Wind Velocities of 36 Km/hr.