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An Experimental Study of the Pressure Losses in Converging Flow Fittings used in Exhaust Systems.

PB221130

Publication Date	1973
Personal Author	Sepsy, C. F.; Pies, D. B.
Page Count	66
Abstract	An investigation was conducted to make pressure drop design data available for commercially marketed converging flow fittings used in industrial ventilation exhaust systems. The investigation included an experimental study and an analytical study. Forty-nine fittings over a wide range of sizes were studied in the experimental phase. The recommended geometry of a converging flow fitting consists of a tapered mainstream with a branch entry angle of thirty or forty-five degrees. The analytical study consisted of developing semi-empirical equations which would be applicable to fittings with tapered mainstreams and thirty, forty-five, or ninety degree branch angles for all combinations of branch, upstream, and downstream diameters.
Keywords	Ducts Pipe fittings Pressure gradients Ventilation Exhaust systems Air flow Flow rate Velocity Statistical analysis
Source Agency	Invalid Source Agency Code
NTIS Subject Category	97J - Heating & Cooling Systems 94 - Industrial & Mechanical Engineering
Corporate Authors	Ohio State Univ., Columbus. Coll. of Engineering.
Document Type	Technical Report
Title Note	Final summary rept.
NTIS Issue Number	197316
Contract Number	HSM-099-71-28

An Experimental Study of the Pressure Losses in Converging Flow Fittings used in Exhaust Systems.

An Experimental Study of the Pressure Losses in Converging Flow Fittings used in Exhaust Systems.
PB221130

Publication Date	1973
Personal Author	Sepsy, C. F.; Pies, D. B.
Page Count	66
Abstract	An investigation was conducted to make pressure drop design data available for commercially marketed converging flow fittings used in industrial ventilation exhaust systems. The investigation included an experimental study and an analytical study. Forty-nine fittings over a wide range of sizes were studied in the experimental phase. The recommended geometry of a converging flow fitting consists of a tapered mainstream with a branch entry angle of thirty or forty-five degrees. The analytical study consisted of developing semi-empirical equations which would be applicable to fittings with tapered mainstreams and thirty, forty-five, or ninety degree branch angles for all combinations of branch, upstream, and downstream diameters.
Keywords	Ducts Pipe fittings Pressure gradients Ventilation Exhaust systems Air flow Flow rate Velocity Statistical analysis
Source Agency	Invalid Source Agency Code
NTIS Subject Category	97J - Heating & Cooling Systems 94 - Industrial & Mechanical Engineering
Corporate Authors	Ohio State Univ., Columbus. Coll. of Engineering.
Document Type	Technical Report
Title Note	Final summary rept.
NTIS Issue Number	197316
Contract Number	HSM-099-71-28