Mechanical Engineering Exam  >  Mechanical Engineering Videos  >  Topper Handwritten Notes & Videos for GATE ME  >  Radial Conduction Through Hollow and Composite Sphere Coordinates HMT Tutorial- 23, Heat and Mass Transfer

Radial Conduction Through Hollow and Composite Sphere Coordinates HMT Tutorial- 23, Heat and Mass Transfer Video Lecture | Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

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FAQs on Radial Conduction Through Hollow and Composite Sphere Coordinates HMT Tutorial- 23, Heat and Mass Transfer Video Lecture - Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

1. What is radial conduction?
Ans. Radial conduction refers to the transfer of heat or mass through a medium in a radial direction, from the center to the outer surface or vice versa.
2. What is the significance of hollow and composite spheres in heat and mass transfer?
Ans. Hollow and composite spheres are important in heat and mass transfer as they represent commonly encountered geometries in various engineering applications. Studying conduction through these spheres helps in understanding the behavior of heat and mass transfer in practical scenarios.
3. How can the radial conduction through a hollow sphere be calculated?
Ans. The radial conduction through a hollow sphere can be calculated using the formula: q = (4πk(T1 - T2))/(1/r2 - 1/r1) where q is the rate of heat transfer, k is the thermal conductivity of the material, T1 and T2 are the temperatures at the inner and outer surfaces of the sphere, r1 and r2 are the radii of the inner and outer surfaces of the sphere.
4. What is the formula for calculating the radial conduction through a composite sphere?
Ans. The radial conduction through a composite sphere can be calculated using the formula: q = (4πk(T1 - T2))/(1/r2 - 1/r1 + ∑(δ1/k1) + ∑(δ2/k2)) where q is the rate of heat transfer, k is the thermal conductivity of the materials, T1 and T2 are the temperatures at the inner and outer surfaces of the sphere, r1 and r2 are the radii of the inner and outer surfaces of the sphere, δ1 and δ2 are the thicknesses of the respective layers, and k1 and k2 are the thermal conductivities of the respective layers.
5. What are the applications of radial conduction through hollow and composite spheres?
Ans. The understanding of radial conduction through hollow and composite spheres is widely applicable in various engineering fields. It is used in the design and analysis of heat exchangers, insulation materials, and thermal protection systems. It also finds application in the study of geothermal energy extraction and underground heat transfer.
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