Examples of convection in the following topics:
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- Example: Calculating Heat Transfer by Convection: Convection of Air Through the Walls of a House.
- Convection is driven by large-scale flow of matter.
- While convection is usually more complicated than conduction, we can describe convection and perform some straightforward, realistic calculations of its effects.
- Cumulus clouds are caused by water vapor that rises because of convection.
- Convection plays an important role in heat transfer inside this pot of water.
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- At the same time, if a fluid such as circulating air or
water in a pool comes into contact with the skin when we are very hot, this
will allow for heat loss through the process of convection.
- The higher the amount of our body surface
exposed to this (usually) circulating air (e.g. as little clothing as
possible), the higher the speed of the circulating air (e.g. it’s really
windy), and the smaller the distance between the skin surface and the blood
vessels, the greater the loss of heat from our body via convection.
- With respect to body heat loss, the processes of radiation
and convection are most effective when the environmental temperature is below
20 C, while evaporative cooling accounts for the most heat loss when the environmental
temperature is above 20 C, and especially when it’s hotter than 35 C.
- These flat hairs increase the flow of air next to the skin and increase heat loss by convection.
- Since the
blood vessels are narrower than they were before, less blood flows through the
skin and thus less heat can escape into the environment via radiation,
convection, and conduction.
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- Heat is transferred by conduction, convection, and/or radiation.
- Heat transfer by convection occurs through a medium.
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- Thus, diffusion should not be confused with convection or advection, which are other transport mechanisms that use bulk motion to move particles from one place to another.
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- The articular capsule is highly innervated but avascular (lacking blood and lymph vessels), and receives nutrition from the surrounding blood supply via either the slow process of diffusion or convection, a far more efficient process.
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- Heat can be exchanged between an animal and its environment through four mechanisms: radiation, evaporation, convection, and conduction.
- Convection currents of air remove heat from the surface of dry skin as the air passes over it.
- Heat can be exchanged by four mechanisms: (a) radiation, (b) evaporation, (c) convection, or (d) conduction.
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- In the spring, inorganic phosphorous is released from the sediment by convection currents in the warming water.
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- Yet the space between Earth and the Sun is largely empty, without any possibility of heat transfer by convection or conduction.
- Convection transfers energy away from the observers as hot air rises, while conduction is negligibly slow here.
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- Unlike heat transmitted by thermal conduction or thermal convection, radiation can propagate through a vacuum.
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- Convection is the heat transfer by the macroscopic movement of a fluid.