Toward a simplified design method for determining the air change effectiveness

Conference · Tue Aug 01 04:00:00 EDT 1995

OSTI ID:87393

Rock, B A ^[1]; Brandemuehl, M J ^[2]; Anderson, R S ^[3]

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1. Univ. of Kansas, Lawrence, KS (United States). Architectural Engineering Dept.
2. Univ. of Colorado, Boulder, CO (United States). Civil, Environmental, and Architectural Engineering Dept.
3. National Renewable Energy Lab., Golden, CO (United States)

This paper describes progress in developing practical air change effectiveness modeling techniques for the design and analysis of air diffusion in occupied rooms. The ultimate goal of this continuing work is to develop a simple and reliable method for determining heating, ventilating, and air conditioning (HVAC) system compliance with ventilation standards. In the current work, simplified two-region models of rooms are used with six occupancy patterns to find the air change effectiveness. A new measure, the apparent ACH effectiveness, yields the relative ventilation performance of an air diffusion system. This measure can be used for the prediction or evaluation of outside air delivery to the occupied part of a room. The required outside air can be greater or less than that specified by ventilation standards such as ANSI/ASHRAE Standard 62-1989 due to poor or effective air distribution.

• OSTI ID: 87393
• Report Number(s): CONF-950104--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR QUALITY
BUILDINGS
INDOOR AIR POLLUTION
MECHANICAL EFFICIENCY
SPACE HVAC SYSTEMS
VENTILATION