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Details

Accuracy of Flow Hoods in Residential Applications.

DE2004822615

Publication Date	2002
Personal Author	Wray, C.; Walker, I.; Sherman, M.
Page Count	18
Abstract	To assess whether houses can meet performance expectations, the new practice of residential commissioning will likely use flow hoods to measure supply and return grille airflows in HVAC systems. Depending on hood accuracy, these measurements can be used to determine if individual rooms receive adequate airflow for heating and cooling, to determine flow imbalances between different building spaces, to estimate total air handler flow and supply/return imbalances, and to assess duct air leakage. This paper discusses these flow hood applications and the accuracy requirements in each case. Laboratory tests of several residential flow hoods showed that these hoods can be inadequate to measure flows in residential systems.
Keywords	Air flow Residential buildings Space HVAC systems Accuracy Availability Calibration Commissioning Ducts Energy efficiency Evaluation Field tests Heating Performance Sensitivity Flow hoods
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Berkeley National Lab., CA. Environmental Energy Technologies Div.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200425

Accuracy of Flow Hoods in Residential Applications.

Accuracy of Flow Hoods in Residential Applications.
DE2004822615

Publication Date	2002
Personal Author	Wray, C.; Walker, I.; Sherman, M.
Page Count	18
Abstract	To assess whether houses can meet performance expectations, the new practice of residential commissioning will likely use flow hoods to measure supply and return grille airflows in HVAC systems. Depending on hood accuracy, these measurements can be used to determine if individual rooms receive adequate airflow for heating and cooling, to determine flow imbalances between different building spaces, to estimate total air handler flow and supply/return imbalances, and to assess duct air leakage. This paper discusses these flow hood applications and the accuracy requirements in each case. Laboratory tests of several residential flow hoods showed that these hoods can be inadequate to measure flows in residential systems.
Keywords	Air flow Residential buildings Space HVAC systems Accuracy Availability Calibration Commissioning Ducts Energy efficiency Evaluation Field tests Heating Performance Sensitivity Flow hoods
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Berkeley National Lab., CA. Environmental Energy Technologies Div.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200425