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What is Convection Heat and Mass Transfer Tutorial- 10, Heat and Mass Transfer, GATE Video Lecture | Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

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FAQs on What is Convection Heat and Mass Transfer Tutorial- 10, Heat and Mass Transfer, GATE Video Lecture - Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

1. What is the definition of convection heat and mass transfer?
Ans. Convection heat and mass transfer refers to the transfer of heat or mass between a solid surface and a fluid medium through the motion of the fluid. It occurs due to the combined effects of conduction (transfer through direct contact) and advection (transfer through fluid motion).
2. What are the main modes of heat and mass transfer?
Ans. The main modes of heat and mass transfer are conduction, convection, and radiation. Conduction involves the transfer of heat or mass through a solid or stationary medium, while convection involves the transfer through the motion of a fluid medium. Radiation, on the other hand, involves the transfer through electromagnetic waves without the need for a medium.
3. How does convection heat and mass transfer occur?
Ans. Convection heat and mass transfer occur through the movement of a fluid medium. When a solid surface is in contact with a fluid, the fluid particles near the surface get heated or acquire mass. These particles then become less dense and rise, creating a convective current. As the heated or mass-laden fluid moves away from the surface, it is replaced by cooler or less-mass-laden fluid, thus maintaining the transfer process.
4. What are the applications of convection heat and mass transfer?
Ans. Convection heat and mass transfer have various applications in everyday life and numerous industries. Some common applications include heating and cooling systems, cooking and baking processes, ventilation and air conditioning, chemical and biological reactors, and heat exchangers. It is also essential in meteorology and climate science to understand the movement of heat and mass in the atmosphere.
5. How can convection heat and mass transfer be enhanced?
Ans. Convection heat and mass transfer can be enhanced by increasing the fluid flow rate, increasing the temperature difference between the solid surface and the fluid, using fins or extended surfaces, and optimizing the shape and design of the surface to promote better fluid flow. Additionally, using heat or mass transfer enhancers such as turbulence promoters or additives can also improve the efficiency of convection transfer processes.
59 videos|189 docs
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