Low-energy cooling of rooms with chilled ceilings and ceiling-mounted devices

• Published in: International journal of energy research Vol. 29; no. 8; pp. 767 - 779
• Main Authors: Misirlioglu, Aydin, Gulcat, Ulgen
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 25-06-2005; Wiley
• Subjects: Applied sciences; chilled ceiling; displacement ventilation; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Heat transfer; relative humidity; Theoretical studies. Data and constants. Metering; Industrial building; Relative humidity; Large dimension; Cooling; Computational fluid dynamics; Supply; Ceiling; displacement ventilation; Velocity; Convection; Composite material; Transients; Navier Stokes equation; chilled ceiling; Cooling system; Ventilation; Heat transfer; energy
• ISSN: 0363-907X; 1099-114X
• DOI: 10.1002/er.1088

Energy‐efficient and comfortable cooling systems have recently gained considerable attention in removal of heat loads from large office spaces and industrial buildings. Here in this paper, somewhat similar heat load removal analysis is made for rooms with not so large dimensions. The ceiling of the room is chilled. The supply velocity is kept in small values. In order to enhance the circulation in the room, a wing‐like structure is mounted to the ceiling. A transient heat transfer problem involving conduction and mixed turbulent convection and relative humidity is studied with solving the 3‐D unsteady full Navier–Stokes equations numerically. CFD is resorted to as a tool for the flow analysis. The results show that using wing‐like structure in the room with chilled ceiling provides better ventilation and this approach does not need any chemical substances such as CFC. Copyright © 2005 John Wiley & Sons, Ltd.