(734) 327 4079 info@ansight.com
AnSight’s Solutions for COVID-19

An analysis of the effects of ceiling height on air distribution in Data Centers

ASHRAE Transactions Volume 112 Part 1. Presented in the 2006 ASHRAE Winter Meeting, 2006

Authors:

Vali, S. et. al. and Kishor Khankari

Abstract:

In this study, computational fluid dynamics (CFD) models are used to evaluate how ceiling height affects the overall performance of the air distribution system within a data center environment. First, an underfloor air delivery system is examined while keeping all operational parameters constant and varying only the clear space height. Then, the performance of the same system is evaluated with a dropped ceiling while varying the clear space height. Finally, an overhead air distribution system is considered, keeping all operational parameters constant while varying only the clear space height. The performance of each system is evaluated using dimensionless parameters developed previously by others. These indices, supply heat index (SHI) and return heat index (RHI), when used to examine the temperatures at the inlets to the equipment inside the cabinets and at the air handler or computer room air-conditioning unit (CRAC) inlets, provide a measure of how much recirculation and bypass occur within the data space.

Fill the following form to download






    About the author

    Dr. Kishor Khankari

    ASHRAE Fellow, ASHRAE Distinguished Lecturer

    Dr Kishor Khankari is the founder of AnSight LLC. As a specialist in Computational Fluid Dynamics (CFD), his passion for solving engineering problems and providing sound scientific solutions has led to innovations and optimized designs in the industry.

    A noted expert in his field, he has a Ph.D. from the University of Minnesota and has published in several technical journals and trade magazines. As a well sought-after speaker Dr. Khankari makes regular presentations in various technical conferences and professional meetings worldwide.

    Recent Posts

    Aerodynamic Containment Can Reduce Spread of Infectious Aerosols

    Building Ventilation and Airborne Transmission of Infectious Aerosols Air is the primary carrier of heat, moisture, and airborne contaminants including infectious aerosols in indoor spaces. The primary goal of building ventilation is to create a healthy environment...

    Can Space Volume Adversely Affect the Dilution of Contaminants?

    What is Air Changes per Hour (ACH)? Clean air is supplied to indoor spaces to dilute the concentration of contaminants to a certain acceptable level. The requirement for such ventilation airflow rate is generally specified in terms of Air Changes per Hour (ACH). It is...