The Turgo turbine is an impulse turbine design which uses a special nozzle at the end of apipe to convert the flow of the water into a high pressure jet. This jet of water is then directedat an angle of about 20 degrees to the face of the runner which use...[繼續(xù)閱讀]

    The peak efficiency of a crossflow turbine is somewhat less than a Kaplan, Francis orPelton turbine. The total efficiency of small crossflow turbines with a small head is between80%-84% throughout the flow. The maximum efficiency of medium and big turbine...[繼續(xù)閱讀]

    The casing of a crossflow turbine ismade of structural steel; it is robust, resistantto impacts and frost. If there is high contentsof abrasive material in the water (e.g. sand,silt) or if the actual composition of the wateris considered aggressive (e.g. ...[繼續(xù)閱讀]

    In a split crossflow turbine, the workingwater is directed by two force-balancedprofiled guide vanes. The vanes divide thewater flow, direct it and allow it to enter the runner smoothly for opening with arbitrary width.Both rotary guide vanes are fitted v...[繼續(xù)閱讀]

    The runner is the most important part of the turbine. The crossflow turbine has acylindrical runner with a horizontal shaft. It is equipped withblades manufactured of bright-rolled profiled steel. Theblade’s edges are sharpened to reduce resistance to the...[繼續(xù)閱讀]

    Crossflow turbines are equipped with self-aligning roller bearings which have severaladvantages, such as low rolling resistance and simple maintenance. The design of the bearinghousing prevents water leakage into bearings and contact of lubricants with wo...[繼續(xù)閱讀]

    The crossflow turbine is a free stream turbine, just like a Pelton turbine. However, in caseof medium or low head, it is possible to apply a draft tube in order to utilize the entire head.The water column in the draft tube must be controllable though. Thi...[繼續(xù)閱讀]

    Since it has a low price and a good regulation ability, crossflow turbines are mostly usedin mini and micro hydropower units of less than two thousand kW and with heads less than200m.Due to its excellent behavior with partial loads, the crossflow turbine ...[繼續(xù)閱讀]

    1. Compare the runners of Pelton turbines and Turgo turbines.2. List the advantages of Turgo turbines over Pelton turbines.3. Given a drawing of a crossflow turbine, identify the following major components:·Turbine casing·Guide vanes·Runner·Draft tube·Mai...[繼續(xù)閱讀]

    [1] Magdy Abou Rayan, Nabil H. Mostafa, Purage Ohans. Textbook of Machines Hydraulic[M]. Zagazig: Zagazig University, Dept. of Mechanical Engineering, 2009.[2] Arne Kjlle. Hydropower in Norway-Mechanical Equipment [M]. Trondheim:Norwegian University of Sc...[繼續(xù)閱讀]