Bulletin of the University of Wisconsin 6, nos. 1-7
Bulletin of the University of Wisconsin 6, nos. 1-7
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IMatthews. 1902. Electrical World & Engineer, p. 531.
Le Chatelier & Broniewski. 1909. Compt. rendu. Vol.
149, p. 854.
[403] tized by Google Digitiz Digiti ized by Google Digiti ized by Google Digiti ized by Google Digiti ized by Google Digiti ized by Google BULLETIN OF THE UNIVERSITY OF WISCONSIN NO. 400 Enoincchino Semes. Vol. •. No. 7. pp. 4os-s73 AN INVESTIGATION OF THE AIR LIFT PUMP BY GEO. JACOB DAVIS, Jr., C. E.
Assistant Professor of Hydraulic BSngineerina The tlniversitv of Wiacofitin ...AND CARL ROBERT WEIDNER, C. E.
Instnictor in Hydraulic Engineering The University of Wisconsin RESEARCHES IN HYDRAULICS Daniel W. Msad. Professor in Hydrauuc and Sanitary Engineering MADISON. WISCONSIN October, 1911 Digiti ized by Google Digiti ized by Google CONTENTS Page Introduction 13 Development of the air lift pump 15 Principle of the air lift pump 18 Theory of the air lift pump 20 Echol*s theory 20 Harris's theory 20 Anderson's theory 23 Gibson's theory 24 Lorenz's theory 24 Green's theory 29 Method of operation 31 Description of an air lift pumping plant 32 The pump 32 The eduction pipe 32 The foot-piece 32 The tail-piece 34 Side inlet pump 34 Annular air tube pump 34 Central air tube pump 30 Combination pump 37 Multiple airlift pump 37 Return air pump 38 Diverging outlet pump 39 The plant 40 The compressor 40 The receiver ._ 40 The air line 40 Disadvantages of the air lift pump 42 Low efficiency 42 Greart depth of submergence 42 Limited horizontal pumping 42 Aeration 43 Advantages of the^air lift pump 44 Large capacity 44 Low maintenance cost 44 Low operating cost 45 Not affected by high temperatures 45 Aeration 45 ReliabilUy 45 Digiti izedbyCnOOgle CONTENTS Wisconsin ExpsRimNTs Notation 47 Description of apparatus — 1908 experiments 4S The eduction pipe 4S The foot-piece 48 The tail-piece 48 The water supply 52 The air supply 52 The air measurement 53 Description of apparatus — 1909 experiments 57 The well 57 The eduction pipe 57 The foot-piece 57 The tail-piece 58 The water supply 58 The air supply 60 The gages 60 Leakage tests 60 Methods of observing 61 1908 experiments 61 1909 experiments 62 Methods of computing 65 Quantity of air 65 Theoretical work done by air 68 Quantity of water 69 Submergence 70 Actual work done in lifting water 71 Efficiency 71 Ratio of volume of air to volume of water 71 Velocity of water in a U-inch tail-piece 72 Experimental coefficient 73 Loss due to friction in air pipe and air nozzle 73 I^ss of head due to entrance 75 Loss of head due to velocity of discharge 75 Loss of head due to elbow 76 Loss of head due to pipe friction and slip 76 Experimental relations 81 Relation of discharge to air used .' 81 Relation of output to percentage of submergence 83 Relation of efficiency to input and percentage of submergence with constant length of pump 90 Efficiency and input 91 Efficiency and percentage of submergence 92 Relation of efficiency to input and percentage of submergence with constant lift 93 [408] Digitized by VjOOQ IC CONTENTS 5 Experimental relations—Continued Pa^e ElBciency and input 94 Efficiency and percentage of submertrence 94 Relation of discharge and efficiency to lift 95 Effect of compressed air outside of pump 100 Effect of tjrp© of foot-piece 105 Eflfect of diverging outlet 107 Study of the size of air bubbles 109 Results of previous experiments 112 Brown and Behr*s experiments 112 Josse's experiments 112 Kelly's experiments 118 Darapsky and Schubert's analysis of experiments 114 Westinghouse Air Brake Company's experiments 115 Duty tests 117 Conclusion 119 Data 121 Bibliography 161 [409] Digitized by VjOOQ IC Digiti ized by Google ILLUSTRATIONS Page Fig.
What to read after Bulletin of the University of Wisconsin 6, nos. 1-7?
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To quickly assess the difficulty of the text, read a short excerpt:
IMatthews. 1902. Electrical World & Engineer, p. 531.
Le Chatelier & Broniewski. 1909. Compt. rendu. Vol.
149, p. 854.
[403] tized by Google Digitiz Digiti ized by Google Digiti ized by Google Digiti ized by Google Digiti ized by Google Digiti ized by Google BULLETIN OF THE UNIVERSITY OF WISCONSIN NO. 400 Enoincchino Semes. Vol. •. No. 7. pp. 4os-s73 AN INVESTIGATION OF THE AIR LIFT PUMP BY GEO. JACOB DAVIS, Jr., C. E.
Assistant Professor of Hydraulic BSngineerina The tlniversitv of Wiacofitin ...AND CARL ROBERT WEIDNER, C. E.
Instnictor in Hydraulic Engineering The University of Wisconsin RESEARCHES IN HYDRAULICS Daniel W. Msad. Professor in Hydrauuc and Sanitary Engineering MADISON. WISCONSIN October, 1911 Digiti ized by Google Digiti ized by Google CONTENTS Page Introduction 13 Development of the air lift pump 15 Principle of the air lift pump 18 Theory of the air lift pump 20 Echol*s theory 20 Harris's theory 20 Anderson's theory 23 Gibson's theory 24 Lorenz's theory 24 Green's theory 29 Method of operation 31 Description of an air lift pumping plant 32 The pump 32 The eduction pipe 32 The foot-piece 32 The tail-piece 34 Side inlet pump 34 Annular air tube pump 34 Central air tube pump 30 Combination pump 37 Multiple airlift pump 37 Return air pump 38 Diverging outlet pump 39 The plant 40 The compressor 40 The receiver ._ 40 The air line 40 Disadvantages of the air lift pump 42 Low efficiency 42 Greart depth of submergence 42 Limited horizontal pumping 42 Aeration 43 Advantages of the^air lift pump 44 Large capacity 44 Low maintenance cost 44 Low operating cost 45 Not affected by high temperatures 45 Aeration 45 ReliabilUy 45 Digiti izedbyCnOOgle CONTENTS Wisconsin ExpsRimNTs Notation 47 Description of apparatus — 1908 experiments 4S The eduction pipe 4S The foot-piece 48 The tail-piece 48 The water supply 52 The air supply 52 The air measurement 53 Description of apparatus — 1909 experiments 57 The well 57 The eduction pipe 57 The foot-piece 57 The tail-piece 58 The water supply 58 The air supply 60 The gages 60 Leakage tests 60 Methods of observing 61 1908 experiments 61 1909 experiments 62 Methods of computing 65 Quantity of air 65 Theoretical work done by air 68 Quantity of water 69 Submergence 70 Actual work done in lifting water 71 Efficiency 71 Ratio of volume of air to volume of water 71 Velocity of water in a U-inch tail-piece 72 Experimental coefficient 73 Loss due to friction in air pipe and air nozzle 73 I^ss of head due to entrance 75 Loss of head due to velocity of discharge 75 Loss of head due to elbow 76 Loss of head due to pipe friction and slip 76 Experimental relations 81 Relation of discharge to air used .' 81 Relation of output to percentage of submergence 83 Relation of efficiency to input and percentage of submergence with constant length of pump 90 Efficiency and input 91 Efficiency and percentage of submergence 92 Relation of efficiency to input and percentage of submergence with constant lift 93 [408] Digitized by VjOOQ IC CONTENTS 5 Experimental relations—Continued Pa^e ElBciency and input 94 Efficiency and percentage of submertrence 94 Relation of discharge and efficiency to lift 95 Effect of compressed air outside of pump 100 Effect of tjrp© of foot-piece 105 Eflfect of diverging outlet 107 Study of the size of air bubbles 109 Results of previous experiments 112 Brown and Behr*s experiments 112 Josse's experiments 112 Kelly's experiments 118 Darapsky and Schubert's analysis of experiments 114 Westinghouse Air Brake Company's experiments 115 Duty tests 117 Conclusion 119 Data 121 Bibliography 161 [409] Digitized by VjOOQ IC Digiti ized by Google ILLUSTRATIONS Page Fig.
What to read after Bulletin of the University of Wisconsin 6, nos. 1-7?
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