VKS MSS 3VKS MSS 2

Ref doc.: GAD for Fuel Oil Storare Dome Roof Tank VKS MSS 1Ref Doc no.: 184-TK-13-M-01 Rev A Prep'd by App'd by Rev12 Content of the tank Fuel Oil3 Diameter of Tank m 344 Height of the Tank m 125 Max height of the liquid m 10.56 Thickness of shell7 sec-1 tank bottom to 2m mm 228 sec-2 next 2m mm 199 sec-3 & 4 next 4 m mm 15

10 sec-5 next 2m mm 1111 sec-6 next 2 m mm 712 Material of the tank Carbon steel13 Insulation on walls and top 2" thick rockwool14 SG of fuel oil 0.9615 Ambient temp deg C 2016 Final temp of liquid deg C 10017 Steam pressure at coil inlet kg/cm2(g) 718 Heatng time allowable days 3.01920 Density of Tank material kg/m3 785021 Specific heat of Tank material kJ/kg-C 0.522 Specific heat of Fuel Oil in tank kJ/kg-C 1.88232425 Volume of Fuel oil m3 953326 Mass of Fuel Oil kg 915183627 Temperature rise deg C 8028 Heating time sec 25920029 Heat required kW 53103031 Volume of tank material m3 1932 Mass of tank material kg 14925133 Temperature rise deg C 8034 Heat required kW 233536 Mean liquid temperature deg C 6037 Temperature diff deg C 4038 Heat Transfer Coeff (insulated tank) W/m2-C 2.339 Total surface area for heat loss m2 219040 Heat loss kW 20141 (iv) Total heat transfer required kW 5535

(iii) Heat loss from tank sides+top

Title of Calculation: Sizing of heating coil for the insulated tank

Client: State Company For Oil Projects (SCOP)

(ii) Heat require for Tank material

(1) INPUT DATA

(2) ASSUMED DATA

(3) CALCULATIONS(i) Heat require for liquid

Sizing of steam coil of insulated tank Rev 3 1 of 2

VKS MSS 3VKS MSS 2

Ref doc.: GAD for Fuel Oil Storare Dome Roof Tank VKS MSS 1Ref Doc no.: 184-TK-13-M-01 Rev A Prep'd by App'd by Rev

Title of Calculation: Sizing of heating coil for the insulated tank

Client: State Company For Oil Projects (SCOP)

4243 Steam pressure at coil inlet kg/cm2(g) 744 Temp at the steam deg C 16945 Specific volume of steam m3/kg 0.24390446 Mean liquid temperature deg C 6047 Temp difference deg C 10948 Heat Transfer Coeff for steam coil W/m2-C 10049 Heat transfer area required m2 50850 Inclusive of 10 % margin m2 559 559 55951 Nominal dia of coil pipe inches 2 3 452 Sch of pipe mm 80 80 8053 ID of pipe mm 49.2 73.7 97.254 Surface area per unit length m2/m 0.189 0.279 0.35855 Length m 2955 2002 15605657 Specific enthalpy of evaporation kJ/kg 2049.858 Steam flowrate required kg/hr 9721 9721 972159 Max velocity in coil m/s 30 30 3060 CSA of coil m2 0.0019012 0.004266 0.0074261 Volumetric flow m3/hr 205 461 80162 Specific volume of steam m3/kg 0.243904 0.243904 0.24390463 Max steam possible kg/hr 842 1889 328664 No. of different coils required n 11.55 5.15 2.96656667 1. Size of the coil - options ND 2" 3" 4"68 2. No. of coils 12 5 369 3. No. of inlets for steam 12 5 370 4. No. of outlets for condensed steam 12 5 371 5. Length of each coil 246 400 52072 6. Total length of coils 2952 2000 1560737475767778

(v) Heat transfer area required

(iii) Provide steam trap between control valve and tank inlet.

(5) REMARKS

(ii) Coil should not be welded with support to allow expansion during start up.(i) The coil should slope towards outlet i.e. condensate side.

(4) CONCLUSION

(vi) Steam requirment, coil capacity, no. of coils

3

3

3

Sizing of steam coil of insulated tank Rev 3 2 of 2