MICROFICHE REFERENCE LIBFUUW - Cd3wd.com

LIST OF FIGURESFigure1.11.22.12.22.33.13.23.33.43.53.63.73.83.9(a)3.9(b)3.103.113.123.13Pulsometer. ......................... 7Demour's Centrifugal Pump .................. 7PageExample system head curve showing the changeof TDH components with Q. ................. 21Net positive suction head (NPSH). .............. 23Example H-Q curve (not based on actual data). ........ 26Self-emptying mot with inclined tow path. .......... 32Circular mot utilizing two buckets with flap-valvesinbottom ......................... 34(a) Counterpoise lift, and (b) with roller for narrow well. . 37Picottah, using man as moveable counterweight ........ 39Scoop (a) used as shovel, and (b) with tripod ........ 42Water balance with flap-valve: scoop ............. 44(a) Single gutter with handle, (b) "see-saw" gutter,and (c) modifications to increase gutter capacity ...... 45Double gutters (a) with lever, and (b) as baldeo balti. ... 47Doon with flap-valve for aiding submergence ......... 48Picottah-style doon with flap-valve ............. 49Recent modifications of the doon. .............. 50Direct-acting, double-acting, piston pump .......... 53"Hand pump" with single-acting, bucket-piston ........ 55Q-T curves for (a) simplex, single-acting power, (b) simplex,double-acting power, (c) simples, double-acting steam, (d)duplex, double-acting steam, and (e) duples double-actingpowerpumps ........................ 573.14Pump head for mechanical or manual power withbucket-pump. .......................59double-acting,3.15Foot-operated bellows pump (Courtesy of IRRI) ........ 62-iii