Mechanical Engineering :: Heat and Mass Transfer
- In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by
- Wien’s law states that the wave length corresponding to ________ is proportional to the absolute temperature.
- The amount of radiation mainly depends on
- The heat transfer by conduction through a thick cylinder (Q) is given by (where T₁ = Higher temperature, T₂ = Lower temperature, r₁ = Inside radius, r₂ = Outside radius, l = Length of cylinder, and k = Thermal conductivity)
- Thermal diffusivity of a substance is given by (where h = Thermal diffusivity, ρ = Density of substance, S = Specific heat, and k = Thermal conductivity)
- Which of the following is expected to have highest thermal conductivity?
- Which of the following has maximum value of thermal conductivity?
- Free convection flow depends on
- Unit of thermal conductivity in M.K.S. units is
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