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Measure guideline, optimizing the configuration of flexible duct junction boxes

Author: R Beach; Arlan Burdick; National Renewable Energy Laboratory (U.S.),; Building America (Program : U.S.),; United States. Department of Energy. Office of Energy Efficiency and Renewable Energy,
Publisher: Golden, CO : U.S. Department of Energy, Energy Efficiency & Renewable Energy, Building Technologies Office, March 2014.
Edition/Format:   eBook : Document : National government publication : English
Database:WorldCat
Summary:
This measure guideline offers additional recommendations to heating, ventilation, and air conditioning (HVAC) system designers for optimizing flexible duct, constant-volume HVAC systems using junction boxes within Air Conditioning Contractors of America (ACCA) Manual D guidance. IBACOS used computational fluid dynamics software to explore and develop guidance to better control the airflow effects of factors that may  Read more...
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Genre/Form: Ebook
Material Type: Document, Government publication, National government publication, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: R Beach; Arlan Burdick; National Renewable Energy Laboratory (U.S.),; Building America (Program : U.S.),; United States. Department of Energy. Office of Energy Efficiency and Renewable Energy,
OCLC Number: 897474274
Notes: Title from title screen (viewed Nov. 6, 2014).
"NREL technical monitor: Michael Gestwick."
"DOE/GO-102014-4396"--Page [20].
Description: 1 online resource (ix, 19 pages) : color illustrations
Other Titles: Optimizing the configuration of flexible duct junction boxes
Responsibility: prepared by: R. Beach and A. Burdick ; prepared for: the National Renewable Energy Laboratory, on behalf of the U.S. Department of Energy's Building America Program, Office of Energy Efficiency and Renewable Energy.

Abstract:

This measure guideline offers additional recommendations to heating, ventilation, and air conditioning (HVAC) system designers for optimizing flexible duct, constant-volume HVAC systems using junction boxes within Air Conditioning Contractors of America (ACCA) Manual D guidance. IBACOS used computational fluid dynamics software to explore and develop guidance to better control the airflow effects of factors that may impact pressure losses within junction boxes among various design configurations. These recommendations can help to ensure that a system aligns more closely with the design and the occupants' comfort expectations. Specifically, the recommendations described herein show how to configure a rectangular box with four outlets, a triangular box with three outlets, metal wyes with two outlets, and multiple configurations for more than four outlets. Designers of HVAC systems, contractors who are fabricating junction boxes on site, and anyone using the ACCA Manual D process for sizing duct runs will find this measure guideline invaluable for more accurately minimizing pressure losses when using junction boxes with flexible ducts.

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