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Indoor climate in rooms with cooled ceiling systems

Niu, J. / Kooi, J.v.d.

AbstractBy using thermal dynamics simulation and CFD (computational fluid dynamics) techniques, thermal comfort and indoor contaminant distributions are analysed for a room with: (1) a conventional displacement ventilation system, (2) a cooled ceiling with displacement ventilation system, and (3) a cooled ceiling with ceiling air supply system. The numerical simulation results indicate that a cooled ceiling reduces the vertical temperature gradients while still maintaining the ventilation effectiveness much higher than one at a load of nearly 50 W/m² floor area. By comparison, maximum cooling capacities of the three systems are discussed, specifically in respect to their thermal comfort performances.

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Indoor climate in rooms with cooled ceiling systems

Niu, J. / Kooi, J.v.d.

AbstractBy using thermal dynamics simulation and CFD (computational fluid dynamics) techniques, thermal comfort and indoor contaminant distributions are analysed for a room with: (1) a conventional displacement ventilation system, (2) a cooled ceiling with displacement ventilation system, and (3) a cooled ceiling with ceiling air supply system. The numerical simulation results indicate that a cooled ceiling reduces the vertical temperature gradients while still maintaining the ventilation effectiveness much higher than one at a load of nearly 50 W/m² floor area. By comparison, maximum cooling capacities of the three systems are discussed, specifically in respect to their thermal comfort performances.

Indoor climate in rooms with cooled ceiling systems

Niu, J. / Kooi, J.v.d.

AbstractBy using thermal dynamics simulation and CFD (computational fluid dynamics) techniques, thermal comfort and indoor contaminant distributions are analysed for a room with: (1) a conventional displacement ventilation system, (2) a cooled ceiling with displacement ventilation system, and (3) a cooled ceiling with ceiling air supply system. The numerical simulation results indicate that a cooled ceiling reduces the vertical temperature gradients while still maintaining the ventilation effectiveness much higher than one at a load of nearly 50 W/m² floor area. By comparison, maximum cooling capacities of the three systems are discussed, specifically in respect to their thermal comfort performances.

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Title:

Indoor climate in rooms with cooled ceiling systems

Contributors:

Niu, J. (author) / Kooi, J.v.d. (author)

Published in:

Building and Environment ; 29 ; 283-290

Publication date:

1994-01-01

Size:

8 pages

ISSN:

DOI:

https://doi.org/10.1016/0360-1323(94)90024-8

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

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