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Heating Coil Calculation

The document provides specifications for heating finished goods using a thermic fluid. It calculates that 865.4 kg of finished goods require 68001.28 kW of heat to increase their temperature by a unspecified amount. A coil with an internal diameter of 40.9 mm will be used to transfer heat from the thermic fluid flowing at 60 m3/hr and 12.69 m/s to the goods. Properties of the thermic fluid like viscosity, thermal conductivity, density, and specific heat are given to calculate the Reynolds number, Prandtl number, and heat transfer coefficient for the coil.

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3K views1 page

Heating Coil Calculation

The document provides specifications for heating finished goods using a thermic fluid. It calculates that 865.4 kg of finished goods require 68001.28 kW of heat to increase their temperature by a unspecified amount. A coil with an internal diameter of 40.9 mm will be used to transfer heat from the thermic fluid flowing at 60 m3/hr and 12.69 m/s to the goods. Properties of the thermic fluid like viscosity, thermal conductivity, density, and specific heat are given to calculate the Reynolds number, Prandtl number, and heat transfer coefficient for the coil.

Uploaded by

yatin888
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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Specific heat of finished good = Cp = 0.47 kcal/kg/k = 1.

96 kJ/kg-K

S.G of finished goods = 0.87

Mass of finished goods = m = 865.4 kg

Amount of heat to be provided to Finished goods = mCp∆T


= 68001.28 kW

Flow rate of thermic fluid = 60 m3/hr

Internal dia of coil D = 40.9 mm


Crossectional area of coil = 0 m2

velocity of flow V = 12.69 m/sec

kinematic viscosity of thermic fluid = v = 300 cst = 0 m2/s

Reynolds number Re = (VD)/ν = 1729.48

thermal conductivity of thermal fluid = 0.88 = 0 kW/m-K

density of thermic fluid = 867.2 kg/m3

specific heat of thermic fluid = Cp = 0.54 Kcal/kg-K = 2.25 kJ/kg-k

Thermal diffusivity of thermic fluid = α = k/(ρCp) = 0 m2/s

Prantdl number = Pr = v/α = 4584.28

hi = 48k/11d = 13.6 kW/m2-k

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