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Measurements of the performance of a wind-driven ventilation terminal


Reference:

Shea, A. D., Robertson, A. P., Levermore, G. J. and Rideout, N. M., 2010. Measurements of the performance of a wind-driven ventilation terminal. Proceedings of the Institution of Civil Engineers-Structures and Buildings, 163 (2), pp. 129-136.

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    Official URL:

    http://dx.doi.org/10.1680/stbu.2010.163.2.129

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    Abstract

    This paper presents the results of the measured ventilation flow rates through a roof-mounted inflow/outflow natural ventilator and of the wind pressures measured on the terminal under real conditions. The experiments were conducted at full scale at the former Silsoe Research Institute wind engineering test site using a 6 m cubic test building, referred to as the Silsoe cube, and using a test house. Ventilation rates and free-stream wind speed were measured using ultrasonic anemometers. The nominally 800 mm 3 800 mm ventilation terminal on the Silsoe cube achieved a peak ventilation rate of 0.06 m(3)/s per m/s wind speed although the data also indicated periods when the ventilation rate dropped to approximately zero for a specific wind direction due to the vent then being in the position of flow re-attachment following separation at the windward leading edge of the roof. This has led to better knowledge in relation to the siting of such terminals. A similar terminal monitored on the test house achieved a peak ventilation rate of nearly 0.1 m(3)/s per m/s wind speed. The ventilation unit proved to be an effective means of providing natural ventilation and is likely to broaden the application of natural ventilation. The results of pressure measurements on the terminal louvres and the internal pressure in the cube, coupled with the measurements of the corresponding ventilating flow rate mechanisms, provide unique data with which to establish procedures for the rational design of such terminals, which is also outlined in the paper.

    Details

    Item Type Articles
    CreatorsShea, A. D., Robertson, A. P., Levermore, G. J. and Rideout, N. M.
    DOI10.1680/stbu.2010.163.2.129
    Related URLs
    URLURL Type
    http://www.icevirtuallibrary.com/content/serial/stbuPublisher
    Uncontrolled Keywordsfield testing & monitoring, research & development, design methods & aids
    DepartmentsFaculty of Engineering & Design > Architecture & Civil Engineering
    Publisher StatementShea_Proc_ICE_SB_2010_163_129.pdf: Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees.
    RefereedYes
    StatusPublished
    ID Code18778

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