Sentences with phrase «with radiative heat transfer»

The moon example was to illustrate that with radiative heat transfer, cooler objects can transfer heat to warmer ones, because heat outflux is solely dependent on the temperature and material properties of the radiator.

Not exact matches

One can not define a temperature at any point in the column with latent heating alone, without appealing to radiative transfer.

As you say, convection uses up a lot of energy too and also counters the idea of radiative heat transfer as a big ticket item because «hot» CO2 molecules only remain so for a brief fraction of a second before they collide with N2 or O2 to warm that localised parcel of air; which then rises to attain equilibrium T somewhere higher and at a COLDER temp so no rad Transf!!!

«The dual wave and particle nature of radiation is recognised, but it is considered more appropriate, and indeed necessary, for an understanding of radiative heat transfer to consider the frequencies and intensities associated with the wave nature of radiation, for only then can the one - way transfer of heat be described and quantified in a meaningful manner.»

I thought that in the adiabatic case (in order to mirror the atmosphere) there is nil radiative or conductive heat flow.That is the standard atmosphere model where conduction is very small compared with other energy transfers.

So simply from basic thermodynamics and heat transfer considerations when you're dealing with a radiative imbalance El Nino is likely to heat the earth up as much as La Nina cools it.

The reason is that for a macroscopic object such as an ordinary mercury thermometer or a spacecraft, radiative heating and cooling processes will dominate (by orders of magnitude) over convective heat transfer with the thin thermosphere.

That is how they view it, but they have, like Wikipedia, ignored mass transfer from heated surfaces to all gases, which would happen with or without any radiative component.

First, radiative heat transfer will only occur with the approximately 2 % of the gaseous molecules that are IR active.

Two physical processes are involved with heat sinks and sources within the thermometer viewshed; mass transfer and radiative transfer.

2) The effects of clouds and aerosols on radiative heat transfer, which are many and varied and still being studied with many questions open.

The reason this warms the surface is most easily understood by starting with a simplified model of a purely radiative greenhouse effect that ignores energy transfer in the atmosphere by convection (sensible heat transport) and by the evaporation and condensation of water vapor (latent heat transport).

... he realized the extreme complexity of the temperature control at any particular region of the earth's surface, and also that radiative equilibrium was not actually established, but if any substance is added to the atmosphere which delays the transfer of low temperature radiation, without interfering with the arrival or distribution of the heat supply, some rise of temperature appears to be inevitable in those parts which are furthest from outer space.

SoD, this is a long post so I'll finish with this thought: why is radiative flux equated with heat transfer as the backradiation appears to be?

I made the suggestion that the NET radiative flux should be compared with other heat transfer processes; you think otherwise.

you wrote: «But the research on radiative transfer carried out in connection with heat sensor / seeking systems for military purposes would seem to make it unlikely that any such major error has gone unnoticed.»