Deepakkumar Yadav
Axial Flow Reaction Turbines Propeller and Kaplan Turbines The propeller and kaplan are propeller shaped axial flow reaction turbines in which the water flows parallel to the axis of the shafts. These turbines were developed to meet the requirement of using available large quantity of water at low heads (upto 80 m). In the year … Read more
Types of Draft Tubes in Hydro Power Plant Though there are various types of draft tubes, but the important type of draft tubes are : Conical draft tube Simple elbow draft tube Elbow draft tube with circular inlet and rectangular outlet Moody’s spreading draft tube. (1) Conical draft tube : Earlier designs of draft tubes … Read more
Comparison Between Impulse Turbine and Reaction Turbine Sr. No. Impulse Turbine Reaction turbine 1. It works on the principle of impulse. Therefore, it follows the impulse momentum equation. It works on the principle of impulse and reaction. Therefore, it follows the law of angular momentum. 2. All the available head is first converted into kinetic … Read more
Francis Reaction Turbines A francis reaction turbine is shown in Figure A. The main components of a reaction turbine are : Scroll casing Runner and shaft Guide mechanism Draft tube Figure A (1) Scroll casing : Water from penstock flows into the outer scroll casing of turbine which is made in spiral shape. The casing … Read more
Construction and Working of Pelton Wheel An arrangement of Pelton turbine is shown in Figure A. Figure A The water from reservoir flows through the penstock to the nozzle which converts the pressure energy (high head of water) into kinetic energy. The resultant high velocity jet from nozzle strikes the buckets or vanes fitted at … Read more
Hydraulic Turbines A hydraulic turbine is a machine which converts the pressure and kinetic energy of water called hydraulic energy into mechanical energy. These are also called as water turbines. The mechanical energy of turbine is further converted into electric energy by an electric generator which is directly coupled to the shaft of hydraulic turbine. … Read more
Interconnected System between Hydro and Steam Power Plants Hydro-electric power plants can be used both as base load and peak load plants. However, today the trend is to use hydro power plants with steam plants in an interconnected system to as follows : (a) When the adequate flow of water is available then the hydro … Read more
Preventive Maintenance of Hydro Power Plants Preventive maintenance of any power system is the key for long life and reduced break down. It enhances the power output and reduces the cost of power generation. Following is the schedule of maintenance. Monthly maintenance : Check for leakages, servo meter connections, turbine shaft, lubrication, oil pump and … Read more
Plants Based on Quantity of Water Available Run-off river plants without pondage : These type of hydro plants do not store water and use the water directly taken from the river. Since there is no control on the availability of water from the river, the power output of such plants fluctuates widely, hence, the utility … Read more
Plants Based on Type of Loads Base load plants : These type of hydro power plant can take up load on base portion of load curve of the power system. These plants are generally of large capacity to meet almost the constant load. The runoff river and storage type plants are used as base load … Read more