For heat to be transferred by convection, it requires the movement of a fluid (liquid or gas) caused by temperature differences. As the fluid near a heat source becomes warmer, it becomes less dense and rises, displacing cooler fluid that then moves to take its place. This process creates a circulating flow of fluid that transfers heat throughout the medium.
Yep, the heat is transferred via convection when fluid flow is involved, which is primarily blood flow. For example, you hands are cold, then warm blood flow helps to warm them up. That's convection. Sure conduction is also involved. When heat must pass solid barrier such as cell walls then the heat is transferred via conduction.
For the transfer of heat to occur, there must be a temperature difference between the two bodies. Additionally, there should be a medium through which heat can be transferred, such as conduction, convection, or radiation. Lastly, the bodies must be in contact or have a means of exchanging energy for heat transfer to happen.
the liquid or gas must circulate to move the heat.
the liquid or gas must circulate to move the heat.
Heat transfer by convection occurs when a fluid or gas moves due to temperature differences, carrying heat with it. As the fluid or gas near a heat source becomes warmer, it expands and becomes less dense, causing it to rise and displace cooler, denser fluid. This movement transfers heat from the warmer area to the cooler area.
the liquid or gas must circulate to move the heat.
Yep, the heat is transferred via convection when fluid flow is involved, which is primarily blood flow. For example, you hands are cold, then warm blood flow helps to warm them up. That's convection. Sure conduction is also involved. When heat must pass solid barrier such as cell walls then the heat is transferred via conduction.
For the transfer of heat to occur, there must be a temperature difference between the two bodies. Additionally, there should be a medium through which heat can be transferred, such as conduction, convection, or radiation. Lastly, the bodies must be in contact or have a means of exchanging energy for heat transfer to happen.
the liquid or gas must circulate to move the heat.
Two molecules must collide with each other.
the liquid or gas must circulate to move the heat.
Heat transfer by convection occurs when a fluid or gas moves due to temperature differences, carrying heat with it. As the fluid or gas near a heat source becomes warmer, it expands and becomes less dense, causing it to rise and displace cooler, denser fluid. This movement transfers heat from the warmer area to the cooler area.
There must be a temperature difference between two bodies or regions, with heat naturally flowing from the higher temperature to the lower temperature. Additionally, there must be a medium, such as air, water, or a solid material, through which the heat can be transferred via conduction, convection, or radiation.
For heat to be transferred by thermal conduction, there must be a temperature difference between two objects or substances in contact. Heat energy will naturally flow from the warmer object to the cooler object until they reach thermal equilibrium. This transfer occurs through the vibration and collision of atoms and molecules in a solid, which carries thermal energy through the material.
Convection is the transfer of heat through the movement of a fluid (liquid or gas). The condition for convection to occur is that the fluid must be in motion, either naturally (natural convection) due to density differences or externally induced (forced convection) by a fan or pump. Heat transfer in convection is more efficient than conduction as it involves both thermal energy transfer and physical movement of the fluid.
In convection heat you heat the air first and then use the hot air to heat yourself. In radiant heat, the energy must be radiated directly from the heat element to your body. Note that radiant is much more directional.
No. Convection requires a carrier to convey the heat. Vacuum says there is nothing to do the conveying. Radiation does not need a convector, so heat can travel by radiation through a vacuum, like the radiation from the sun.