The ADPI of cold air jets in an enclosure

Conference · Fri Nov 01 04:00:00 EST 1996

OSTI ID:392427

Kirkpatrick, A T; Knappmiller, K D ^[1]

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1. Colorado State Univ., Fort Collins, CO (United States). Dept. of Mechanical Engineering

The subject of this paper is the computational determination of the air diffusion performance index (ADPI) of a cold air jet in an enclosure. The jet outlet size, temperature, momentum, and Archimedes number were varied to produce a range of attached and separated flow regimes. The cooling load was produced by heating one of the room walls. The effect of using conventional and cold supply jets was investigated for two heat source locations. The results indicate that, for the type of diffuser and room configuration studied, an optimum ADPI was obtained when the jet separation distance is approximately equal to the room characteristic length. Room airflow conditions produced by conventional and cold air supply temperature air are almost identical to each other when the same separation distance criteria, i.e., same momentum flux, are used.

• OSTI ID: 392427
• Report Number(s): CONF-960254--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR FLOW
COMMERCIAL BUILDINGS
COOLING LOAD
DIFFUSERS
SPACE HVAC SYSTEMS
TEMPERATURE DEPENDENCE