A pipe with 8 cm intemal diameter, 9 cm outer diameter, 2 meter long, thermal conductivity 30Wimk is insulated by glass wool material wilth which thermal conductivity 0,05Wimk, thickness 4 om. Intenal surface temperature of the pipe T is 80°C, surrounding temperature where ppe is located is 20°C, convection heat transfer constant on outer surface of insulation is 25wim?K. 30Wimk T.20°C h. 25Wimk a. Detemine the heat loss from the pipe to surrounding (W)? b. What is temperature of the surface between glass wooden and pipe (T2? e What is critical insulation radius for pipe? is insulation on the pipe succestul? Explain

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Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.