Publication

Gas absorption with heat effects. I. New computational method

Urs von Stockar
1974
Journal Articles

Abstract

A dynamic simulation method was applied to det. the state of a stagewise gas absorption column. The unsteady state heat and mass balances for each real stage were integrated up to the steady state, considering all possible heat effects. The new method resulted in stable convergence of the 2-point boundary value problem. Earlier studies of the influences of typical operating and system variables on the capacity of an absorber were extended. The transport capacity of the gas phase for heat, solvent evapn., the liq.:gas ratio, the solvent feed temp., and the feed gas humidity were investigated. The limitation of the absorber capacity through the formation of a temp. plateau was confirmed and extended to the case of a column, where both absorption and desorption occur. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/35189f30-e5c7-4211-88ec-76b640bc02f9

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Urs von Stockar
1974
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/35189f30-e5c7-4211-88ec-76b640bc02f9

About this result

Related concepts (32)

Heat capacity

Heat capacity or thermal capacity is a physical property of matter, defined as the amount of heat to be supplied to an object to produce a unit change in its temperature. The SI unit of heat capacity is joule per kelvin (J/K). Heat capacity is an extensive property. The corresponding intensive property is the specific heat capacity, found by dividing the heat capacity of an object by its mass. Dividing the heat capacity by the amount of substance in moles yields its molar heat capacity.

Heat

In thermodynamics, heat is the thermal energy transferred between systems due to a temperature difference. In colloquial use, heat sometimes refers to thermal energy itself. An example of formal vs. informal usage may be obtained from the right-hand photo, in which the metal bar is "conducting heat" from its hot end to its cold end, but if the metal bar is considered a thermodynamic system, then the energy flowing within the metal bar is called internal energy, not heat.

Heat transfer

Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy (heat) between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, thermal convection, thermal radiation, and transfer of energy by phase changes. Engineers also consider the transfer of mass of differing chemical species (mass transfer in the form of advection), either cold or hot, to achieve heat transfer.

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Gas absorption with heat effects. I. New computational method

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