Diffuse ceiling ventilation: Air distribution and thermal comfort

Publikation: Bog/antologi/afhandling/rapportPh.d.-afhandlingForskning

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Resumé

Diffuse ceiling ventilation is an innovative ventilation concept where the suspended ceiling serves as air diffuser to supply fresh air into the room. Compared with conventional ventilation systems, diffuse ceiling ventilation can significantly reduce or even eliminate draught risk due to the low momentum supply. In addition, this ventilation system uses a ceiling plenum to deliver air and requires less energy consumption for air transport than full-ducted systems. There is a growing interest in applying diffuse ceiling ventilation in offices and other commercial buildings due to the benefits from both thermal comfort and energy efficient aspects.

The present study aims to characterize the air distribution and thermal comfort in the rooms with diffuse ceiling ventilation. Both the stand-alone ventilation system and its integration with a radiant ceiling system are investigated. This study also presents the development and validation of a numerical model for predicting the airflow pattern and thermal behavior in the room with diffuse ceiling ventilation. The validated model is further used to investigate the effect of different design parameters on the system performance.
OriginalsprogEngelsk
ForlagAalborg Universitetsforlag
Antal sider79
ISBN (Elektronisk)978-87-7112-771-3
DOI
StatusUdgivet - 2016
NavnPh.d.-serien for Det Teknisk-Naturvidenskabelige Fakultet, Aalborg Universitet
ISSN2246-1248

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Thermal comfort
Ceilings
Ventilation
Air
Diffusers (fluid)
Thermal energy
Numerical models
Momentum
Energy utilization

Bibliografisk note

PhD supervisor:
Prof. Per K. Heiselberg, Aalborg University

Assistant PhD supervisor:
Associate Prof. Michal Z. Pomianowski, Aalborg University

Emneord

    Citer dette

    Zhang, C. (2016). Diffuse ceiling ventilation: Air distribution and thermal comfort. Aalborg Universitetsforlag. Ph.d.-serien for Det Teknisk-Naturvidenskabelige Fakultet, Aalborg Universitet https://doi.org/10.5278/vbn.phd.engsci.00142
    Zhang, Chen. / Diffuse ceiling ventilation : Air distribution and thermal comfort. Aalborg Universitetsforlag, 2016. 79 s. (Ph.d.-serien for Det Teknisk-Naturvidenskabelige Fakultet, Aalborg Universitet).
    @phdthesis{3c75cb3eb95341959d6d25286078f8dd,
    title = "Diffuse ceiling ventilation: Air distribution and thermal comfort",
    abstract = "Diffuse ceiling ventilation is an innovative ventilation concept where the suspended ceiling serves as air diffuser to supply fresh air into the room. Compared with conventional ventilation systems, diffuse ceiling ventilation can significantly reduce or even eliminate draught risk due to the low momentum supply. In addition, this ventilation system uses a ceiling plenum to deliver air and requires less energy consumption for air transport than full-ducted systems. There is a growing interest in applying diffuse ceiling ventilation in offices and other commercial buildings due to the benefits from both thermal comfort and energy efficient aspects. The present study aims to characterize the air distribution and thermal comfort in the rooms with diffuse ceiling ventilation. Both the stand-alone ventilation system and its integration with a radiant ceiling system are investigated. This study also presents the development and validation of a numerical model for predicting the airflow pattern and thermal behavior in the room with diffuse ceiling ventilation. The validated model is further used to investigate the effect of different design parameters on the system performance.",
    keywords = "Diffuse ceiling ventilation, Air distribution, Thermal comfort, Experiment, CFD, TABS",
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    Zhang, C 2016, Diffuse ceiling ventilation: Air distribution and thermal comfort. Ph.d.-serien for Det Teknisk-Naturvidenskabelige Fakultet, Aalborg Universitet, Aalborg Universitetsforlag. https://doi.org/10.5278/vbn.phd.engsci.00142

    Diffuse ceiling ventilation : Air distribution and thermal comfort. / Zhang, Chen.

    Aalborg Universitetsforlag, 2016. 79 s.

    Publikation: Bog/antologi/afhandling/rapportPh.d.-afhandlingForskning

    TY - BOOK

    T1 - Diffuse ceiling ventilation

    T2 - Air distribution and thermal comfort

    AU - Zhang, Chen

    N1 - PhD supervisor: Prof. Per K. Heiselberg, Aalborg University Assistant PhD supervisor: Associate Prof. Michal Z. Pomianowski, Aalborg University

    PY - 2016

    Y1 - 2016

    N2 - Diffuse ceiling ventilation is an innovative ventilation concept where the suspended ceiling serves as air diffuser to supply fresh air into the room. Compared with conventional ventilation systems, diffuse ceiling ventilation can significantly reduce or even eliminate draught risk due to the low momentum supply. In addition, this ventilation system uses a ceiling plenum to deliver air and requires less energy consumption for air transport than full-ducted systems. There is a growing interest in applying diffuse ceiling ventilation in offices and other commercial buildings due to the benefits from both thermal comfort and energy efficient aspects. The present study aims to characterize the air distribution and thermal comfort in the rooms with diffuse ceiling ventilation. Both the stand-alone ventilation system and its integration with a radiant ceiling system are investigated. This study also presents the development and validation of a numerical model for predicting the airflow pattern and thermal behavior in the room with diffuse ceiling ventilation. The validated model is further used to investigate the effect of different design parameters on the system performance.

    AB - Diffuse ceiling ventilation is an innovative ventilation concept where the suspended ceiling serves as air diffuser to supply fresh air into the room. Compared with conventional ventilation systems, diffuse ceiling ventilation can significantly reduce or even eliminate draught risk due to the low momentum supply. In addition, this ventilation system uses a ceiling plenum to deliver air and requires less energy consumption for air transport than full-ducted systems. There is a growing interest in applying diffuse ceiling ventilation in offices and other commercial buildings due to the benefits from both thermal comfort and energy efficient aspects. The present study aims to characterize the air distribution and thermal comfort in the rooms with diffuse ceiling ventilation. Both the stand-alone ventilation system and its integration with a radiant ceiling system are investigated. This study also presents the development and validation of a numerical model for predicting the airflow pattern and thermal behavior in the room with diffuse ceiling ventilation. The validated model is further used to investigate the effect of different design parameters on the system performance.

    KW - Diffuse ceiling ventilation

    KW - Air distribution

    KW - Thermal comfort

    KW - Experiment

    KW - CFD

    KW - TABS

    U2 - 10.5278/vbn.phd.engsci.00142

    DO - 10.5278/vbn.phd.engsci.00142

    M3 - Ph.D. thesis

    BT - Diffuse ceiling ventilation

    PB - Aalborg Universitetsforlag

    ER -

    Zhang C. Diffuse ceiling ventilation: Air distribution and thermal comfort. Aalborg Universitetsforlag, 2016. 79 s. (Ph.d.-serien for Det Teknisk-Naturvidenskabelige Fakultet, Aalborg Universitet). https://doi.org/10.5278/vbn.phd.engsci.00142