Science, asked by kuldeepsingh69764, 8 months ago

A cylindrical shell with flat ends contains a fluid at 100°C and is lagged with 10 cm thick layer of insulating material of thermal conductivity 0.05 W/m°C. the shell is placed in a room where the air is at 20°C and the convective coefficient at the outer surfaceof the laggig is 10Wm2°C if the volume enclosed is 10 m3 and the ratio is of cylinder length radius is 8 , workout the rate of heat dissipiation from the fluid. Neglect corner effect and any thermal resistance due to shell material . b) it is now required to hold the same quantity 10m3 of fluid in a spherericaal container lagged with the same insulating material . for the same heat flux , calculate the size of spherical shell and thickness of lagging *​

Answers

Answered by Ishakutty
0

Answer:

hard to understand

Explanation:

a genius can only answer I am not a genius

Answered by Anonymous
1

Answer:Calculate the rate of heat loss through the vertical walls of a boiler furnace of size 4

m by 3 m by 3 m high. The walls are constructed from an inner fire brick wall 25 cm

thick of thermal conductivity 0.4 W/mK, a layer of ceramic blanket insulation of

thermal conductivity 0.2 W/mK and 8 cm thick, and a steel protective layer of

thermal conductivity 55 W/mK and 2 mm thick. The inside temperature of the fire

brick layer was measured at 600o C and the temperature of the outside of the

insulation 600 C. Also find the interface temperature of layers.

Given:

Composite Wall

l= 4m b= 3m h= 3m

Area of rectangular wall lb = 4x3 = 12m2

L1 = 25 cm Fire brick

= 0.4 W/mK

L2 =0.002m Steel

k2 = 54 W/mK

L3 = 0.08 m insulation

= 0.2 W/mK

T1 = 6000 C

T2 = 600 C

Explanation:

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