Thermal Enhancement of Solid Desiccant Packed Bed Dehumidifier Under Forced Convection in Subsonic Flow Regime

Siegfried Yeboah; Jo Darkwa

doi:10.2514/6.2014-3658

Thermal Enhancement of Solid Desiccant Packed Bed Dehumidifier Under Forced Convection in Subsonic Flow Regime

Siegfried Yeboah, Jo Darkwa

Civil and Building Services Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A theoretical study on an alternative technique of extensively filling sections of packed beds for thermal enhancement has been carried out. Three packed beds of solid desiccants with different configurations but similar material properties were used for this investigation. The beds were modelled and simulated under forced convection in subsonic flow regime using porous media model with energy and transport equations solved under local thermal equilibrium conditions in ANSYS Fluent. The results show that the presence of clear fluid sections within porous media significantly reduces the overall bed temperature. It is also observed that narrowing the clear fluid sections between porous inserts impacts on the bed flow behaviour and thermal enhancement although it is found to cause considerable pressure drop.

Original language	English
Title of host publication	12th International Energy Conversion Engineering Conference
DOIs	https://doi.org/10.2514/6.2014-3658
Publication status	Published - 25 Jul 2014
Event	AIAA 2014-3658 -Propulsion Energy Forum - 12th International Energy Conversion Engineering Conference - Duration: 25 Jul 2014 → …

Conference

Conference	AIAA 2014-3658 -Propulsion Energy Forum - 12th International Energy Conversion Engineering Conference
Period	25/07/14 → …

Keywords

Heat Transfer, Porous Media, Thermal Enhancement, Computational Fluid Dynamics

Access to Document

10.2514/6.2014-3658

Cite this

@inproceedings{64dd66826f06479dbae7ed4a8071e64c,

title = "Thermal Enhancement of Solid Desiccant Packed Bed Dehumidifier Under Forced Convection in Subsonic Flow Regime",

abstract = "A theoretical study on an alternative technique of extensively filling sections of packed beds for thermal enhancement has been carried out. Three packed beds of solid desiccants with different configurations but similar material properties were used for this investigation. The beds were modelled and simulated under forced convection in subsonic flow regime using porous media model with energy and transport equations solved under local thermal equilibrium conditions in ANSYS Fluent. The results show that the presence of clear fluid sections within porous media significantly reduces the overall bed temperature. It is also observed that narrowing the clear fluid sections between porous inserts impacts on the bed flow behaviour and thermal enhancement although it is found to cause considerable pressure drop.",

keywords = "Heat Transfer, Porous Media, Thermal Enhancement, Computational Fluid Dynamics",

author = "Siegfried Yeboah and Jo Darkwa",

year = "2014",

month = jul,

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doi = "10.2514/6.2014-3658",

language = "English",

isbn = "9781624103049",

booktitle = "12th International Energy Conversion Engineering Conference",

note = "AIAA 2014-3658 -Propulsion Energy Forum - 12th International Energy Conversion Engineering Conference ; Conference date: 25-07-2014",

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TY - GEN

T1 - Thermal Enhancement of Solid Desiccant Packed Bed Dehumidifier Under Forced Convection in Subsonic Flow Regime

AU - Yeboah, Siegfried

AU - Darkwa, Jo

PY - 2014/7/25

Y1 - 2014/7/25

N2 - A theoretical study on an alternative technique of extensively filling sections of packed beds for thermal enhancement has been carried out. Three packed beds of solid desiccants with different configurations but similar material properties were used for this investigation. The beds were modelled and simulated under forced convection in subsonic flow regime using porous media model with energy and transport equations solved under local thermal equilibrium conditions in ANSYS Fluent. The results show that the presence of clear fluid sections within porous media significantly reduces the overall bed temperature. It is also observed that narrowing the clear fluid sections between porous inserts impacts on the bed flow behaviour and thermal enhancement although it is found to cause considerable pressure drop.

AB - A theoretical study on an alternative technique of extensively filling sections of packed beds for thermal enhancement has been carried out. Three packed beds of solid desiccants with different configurations but similar material properties were used for this investigation. The beds were modelled and simulated under forced convection in subsonic flow regime using porous media model with energy and transport equations solved under local thermal equilibrium conditions in ANSYS Fluent. The results show that the presence of clear fluid sections within porous media significantly reduces the overall bed temperature. It is also observed that narrowing the clear fluid sections between porous inserts impacts on the bed flow behaviour and thermal enhancement although it is found to cause considerable pressure drop.

KW - Heat Transfer, Porous Media, Thermal Enhancement, Computational Fluid Dynamics

U2 - 10.2514/6.2014-3658

DO - 10.2514/6.2014-3658

M3 - Conference contribution

SN - 9781624103049

BT - 12th International Energy Conversion Engineering Conference

T2 - AIAA 2014-3658 -Propulsion Energy Forum - 12th International Energy Conversion Engineering Conference

Y2 - 25 July 2014

ER -