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Convection heat transfer is the transfer of heat by the movement of a fluid.
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What is the physical significance of nusselt number how is it related with convection and conduction heat transfer hence work out its relationship with the appropriate prameters?
The Nusselt number is the ratio of convective to conductive heat transfer across the boundary layer. Nu=(hL)/k h is heat transfer coefficient L is the characteristic length k is the thermal conductivity
How velocity of fluid effects the convection heat transfers?
The velocity of the fluid affects convection heat transfer by influencing the rate at which heat is transferred. Higher fluid velocity results in increased heat transfer due to improved mixing and enhanced convective heat transfer coefficients. This can lead to more efficient cooling or heating processes in applications like heat exchangers or HVAC systems.
Which layer the sun moves heat energy to the convective layer?
radiative layer
How does the suns core transfers heats to the surface?
In part through convection, but most regions of the Sun or non-convective; as a result, heat transfer is mainly by radiation: a photon gets absorbed by an atom, then it gets re-emitted soon.
When a metal pan is heated on the stove what is it?
All stove flames are hotter than you would expect any pan to normally be so there is a temperature gradient between the flame and the pan. Heat is transferred from the hot gasses of the flame to the pan by two mechanisms: convective heat transfer and radiant heat transfer. Note that the hotter the flame, the more significant the radiant heat transfer becomes.
What is the convective heat transfer coefficient of water and how does it impact the rate of heat transfer in a system?
The convective heat transfer coefficient of water is a measure of how easily heat can move through water. A higher convective heat transfer coefficient means heat can transfer more quickly. In a system, a higher convective heat transfer coefficient can increase the rate of heat transfer, making the system more efficient at exchanging heat.
Which point indicates convective heat transfer?
Convective heat transfer occurs in fluids, such as air or water, when the fluid moves and carries heat with it. It is represented by the point on a heat transfer curve where heat is transferred due to the movement of the fluid, creating a convective heat transfer process.
What is convective heat?
Convection heat transfer is the transfer of heat by the movement of a fluid.
How many heat transfer zone in boiler?
convective and radiant heat transfer
What is the difference between conductive and convective heat transfer mechanisms?
Conductive heat transfer occurs through direct contact between materials, while convective heat transfer involves the movement of fluids to transfer heat. Conductive transfer is more efficient in solids, while convective transfer is more effective in liquids and gases.
What is the convective heat transfer coefficient of water and how does it affect heat transfer processes?
The convective heat transfer coefficient of water is a measure of how easily heat can transfer through water by convection. It represents the rate at which heat is transferred between a solid surface and water through the movement of fluid particles. A higher convective heat transfer coefficient means that heat can transfer more efficiently, leading to faster heat exchange processes. This coefficient is influenced by factors such as temperature, flow rate, and surface area, and plays a crucial role in various heat transfer applications, such as cooling systems and thermal management.
Does juice temperature increase with increasing convective heat transfer coefficient at any constant kettle surface temperature?
Yes, the juice temperature increases with an increasing convective heat transfer coefficient at any constant kettle surface temperature. The convective heat transfer coefficient represents the efficiency of heat transfer from the kettle to the juice. As the convective heat transfer coefficient rises, more heat is transferred from the kettle surface to the juice per unit of time. This increased efficiency results in a faster temperature rise in the juice. Therefore, a higher convective heat transfer coefficient enhances the overall heating process, leading to a greater temperature increase in the juice even when the kettle surface temperature remains constant.
How does temperature affect the rate of heat transfer?
For conductive and convective heat transfer, the rate of heat transfer is proportional to the the temperature difference; if you double the difference you will double the rate of heat transfer. For radiative heat transfer, the rate of heat transfer is proportional to the difference of the 4th powers of the absolute temperatures.
What is the convective heat transfer coefficinet for air at atmospheric condition and how it change with other factors?
The convective heat transfer of any fluid is dependent on its velocity, viscosity...and other properties. The higher the velocity the higher the coefficient. Generally indoor convective heat transfer of air is approximately 40 W/m2.K It varys depending on wind conditions, generally within the range of 10-100 W/m2.K
What has the author Ioan I Pop written?
Ioan I. Pop has written: 'Convective heat transfer' -- subject(s): Convection, Heat
What has the author W M Kays written?
W. M. Kays has written: 'Convective heat and mass transfer' -- subject(s): Heat, Mass transfer, Convection, Textbooks
What has the author Chongbin Zhao written?
Chongbin Zhao has written: 'Convective and advective heat transfer in geological systems'
