Sentences with phrase «radiation heat exchange»

Tags for this Online Resume: heat / mass transfer, fluid dynamics and magnetic hydrodynamics, phase transition, semiconductors, the optimisation of yield, mathematical models, crystal growth, numerical methods, simulations, data analysis, radiation heat exchange, FORTRAN, C, Two and three dimentional modeling, Evaluation and testing of software products, presentations and trainings, scientific paper writing

Not exact matches

Heat exchange between an organism and the environment is complex, consisting of conduction, convection, radiation and evaporation.

Heat exchange between the ocean and the atmosphere is mainly mediated by the blowing wind, evaporation and condensation not infrared radiation.

This is not the case with surface - to - air heat exchange (which involves evapo - transpiration, sensible heat flows, and radiation) or even within the troposphere where impacts of latent heating on atmospheric circulations are realized on scales ranging from hundreds of meters to thousands of kilometers.

There is of course a direct heat exchange between the ground and the atmosphere, but the main transfer happens via heat radiation.

Sea ice is an important component of the Earth system; it is highly reflective, altering the amount of solar radiation that is absorbed; it changes the salinity of the ocean where it forms and melts, and it acts as a barrier to the exchange of heat and momentum fluxes between the atmosphere and ocean.

Throughout the rising process, heat in the form of KE is progressively being removed from the exchange of radiation and throughout the subsequent falling process heat in the form of KE is progressively being added back to the exchange of radiation.

Over land, you have a surface energy balance that includes downwelling IR, upwelling IR (Stefan Boltzmann), downwelling solar radiation minus what is reflected back from the surface, latent heat flux and sensible heat flux (these are turbulent fluxes associated with exchange with the atmosphere), and conductive flux from the ground (below the surface).

The cryosphere derives its importance to the climate system from a variety of effects, including its high reflectivity (albedo) for solar radiation, its low thermal conductivity, its large thermal inertia, its potential for affecting ocean circulation (through exchange of freshwater and heat) and atmospheric circulation (through topographic changes), its large potential for affecting sea level (through growth and melt of land ice), and its potential for affecting greenhouse gases (through changes in permafrost)(Chapter 4).

The IPCC model suggests that the heat and latent energy exchange between the underlying surface and the atmosphere is a direct response to the imbalance of solar energy and terrestrial radiation at the surface.

Do GCM's «create» cold fronts and the arctic air flows when they run, or are they «static» heat exchange models only (radiation received and radiation released are obviously their «drivers»... But what happens after the air masses have been «driven» for the equal of one or two «years» — do we see flows in the tropics, mid-latitudes, and polar latitudes than resembles earth's circulation?

It is an adiabatic expansion, or the net heat exchanged is zero, which in other words means that the 330 w / m2 of back radiations do not exist.

It is not «conduction» but exchange of radiation; if you keep your hands parallel at a distance of some cm the right hand does not (radiatively) «warm» the left hand or vice versa albeit at 33 °C skin temperature they exchange some hundreds of W / m ² (about 500 W / m ²) The solar radiation reaching the surface (for 71 % of the surface, the oceans) is lost by evaporation (or evapotranspiration of the vegetation), plus some convection (20 W / ²) and some radiation reaching the cosmos directly through the window 8µm to 12 µm (about 20 W / m ² «global» average); only the radiative heat flow surface to air (absorbed by the air) is negligible (plus or minus); the non radiative (latent heat, sensible heat) are transferred for surface to air and compensate for a part of the heat lost to the cosmos by the upper layer of the water vapour displayed on figure 6 - C.

Without atmosphere the surface of the ocean or land would lose o (T ^ 4 — Ts ^ 4)(1) where Ts is the temperature of the space (about 4K) while in the presence of the atmosphere the heat losses are hc * (T — Tl)(2) and o (T ^ 4 — Tl ^ 4)(3) where (2) represents the heat transfer by convection (inclusive conduction) through the air layer and (3) corresponds to the net flow due to the heat exchange by radiation, Tl being the mean temperature of the air layer.

There are so many other large heat / energy exchanges happenning that the puny little back radiation is knocked over on it's a $ $.

Here, h involves all types of heat exchange as radiation, convection, conduction and evaporation (evaporation must be taken into account also in the case of lands as for example wet soils, vegetation, lakes, etc).

If surface radiation has been measured and does indeed average 390 W / m ² then either the stated «input wattage» (your 170 Watts / m ^ 2) is incorrect or the «Earth System», Globe + Atmosphere, must be looked at as one complete unit where internal heat exchange uses or looses 390 — 170 = 220 W / m ², or — Kirchhoff was wrong but nobody, as far as I know, advocates that.

You point out that heat indeed only is exchanged between bodies through conduction (radiation or latent heat isn't relevant, here, of course) and that convection merely is a matter of moving heat - containing «bodies» around.

If the whole surface of the earth is considered as a unit upon which a certain amount of heat falls each day, it is obvious that the mean temperature will depend upon the rate at which this heat can escape by radiation, because no other type of heat exchange is possible.

This is the crux of the matter, and why I say this is where AGW is confused, to the point where as above shortwave radiation is believed to «be thermal energy heating the Earth», because this is how the «statistical» has justified «its method `, by looking at energy exchange out of context of heat.

2) Once in the presence of the room - temp N2 it will exchange heat with the room - temp N2 molecules by conduction (when a hot N2 collides with a room - temp N2) and also by radiation.