wind pumps for irrigation外语英文电子书

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1、MICROFICHEREFERIENCELIBRARYAprojectofVolunteersinAsiaBy:H.J.vanDijkandP.D.Goedhar?Pub!&~ecfby:ConsultancySetvicesWindEnergyDevelopingCountriesP.O.Box853800ABAmersfoortTheNetheriandsAvailablefrom:Consu!tancyServicesWindEnergyDevelopingCountriesP.0.[33x853

2、8OC,ABAmersfoortTheNasherlandsReproducedwithpermission.Reproductionofthismicrofichedosumexinanyformissubjecttothesamerestrictionsasthoseoftheoriginaldocument.Hightechislivinginthenineteenthcentuv,thepre-managementworld.Theybelievethatpeoplepayfortechnolo

3、gy.Theyhavearomancewithtechnology.Butpeopledontpayfortechnology:theypayforwhattheygetoutoftechnology.PETERF.DRUCKER,quotedin:TheFrontienofManagement:1987,3n3an3wafernuaitidii&ify1.1ThehistoryofwindpumpsinCreteand133.1-_--------.lt-.--_Thewindre_gime__--.

4、___-...--.-...-....-._-.--.-_36SaoVkente______--..----.--.*..-..3.1.1Datarequirements361.1.1Lassithi,Crete133.1.2Meanwindspeeds361.1.2SaoVicente153.1.3Dataaccuracy3612Keyfactorsoftheviabilityofwindpumps3.1.4Winddatameasuringequipment37_._-.----in_--...di

5、ient-..-..---.farmingsystems-----.-..-.-......-1732-_---AnaBis---ofwinddata---_--391.2.1Generalaspects173.3Siteevaluationwithrespecttowind1.2.2Theintroductionofirrigationwithwind-pumpsintorain-fedfarmingsystems18--sped.-421.2.3Theintroductionofwindpumpsi

6、nirrigated3.4Availabil&ofwaterI_-~44farmingsystems193.4.1Surfacewater443.4.2Groundwater442~fe~e~ftypesufwifi~pmfps3.4.3Wellyield44adtheirchrarferisfics3.4.4Totalpumpingheao452.1lopesofwindyum_pi__---203.4.5Waterquality452.1.1Tradihonallow-costwindpumps20

7、3.5Finalcomments452.1.2Classicmulti-bladewindpumps212.1.3Recentlydevelopedwindpumps214Zhecumman~areaofa2.1.4Acomparisonofthreetypesofwindpumps23win@wffp2.1.5Windgeneratorsincombinationwith4.1irrigationrequirements.___-46electricpumps234.1.ICropcoefficien

8、t462.1.6Windsystemswithlongdistancetransmission244.1.2Referenceevapotranspiration4622Windpumpcharacteristics.~~~254.1.3Effectiverainfall472.2.1Rotorareaandoutputofa*windpump254.1.4Irrigationefficiency4722.2Windspeedsusedta