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Air handling unit direct digital control system retrofit to provide acceptable indoor air quality and global energy optimization

Journal Article · · Energy Engineering
OSTI ID:562255
; ;  [1];  [2]
  1. Pennsylvania State Univ., University Park, PA (United States). Dept. of Architectural Engineering
  2. Trane Co., La Crosse, WI (United States)
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The project objective was to control outdoor ventilation airflow and distribution so that ASHRAE Standard 62-1989 was satisfied while minimizing the impact of energy utilization. The base system Direct Digital Controls (DDC) are application specific, with insufficient custom programming capacity to meet the project objective by themselves. Three complex control schemes were installed. In all cases the concept was to continually reset the outdoor air (OA) fraction aspirated into the air-handling unit (AHU) as necessary to satisfy ASHRAE Standard 62-1989. A personal computer-based system, independent from the DDC controls, was used to collect data, perform the calculations, and send back new control settings.
OSTI ID:
562255
Journal Information:
Energy Engineering, Journal Name: Energy Engineering Journal Issue: 5 Vol. 94; ISSN EENGDO; ISSN 0199-8595
Country of Publication:
United States
Language:
English

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Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR QUALITY
COMPUTERIZED CONTROL SYSTEMS
DATA ACQUISITION SYSTEMS
INDOOR AIR POLLUTION
OPTIMIZATION
VENTILATION SYSTEMS