Lecture1HydropowerPlant范例.ppt

Lecture 1 Hydropower Plant BLOCK DIAGRAM New Words and Phases New Words and Phases Contents Introduction of hydropower Advantages and disadvantages of hydropower Multi-purpose uses of hydropower project Typical components of hydropower plants Video: MidAmerican_Energy__Hydroelectric_Power_Plant_Virtual_Tour Video: Hydroelectric Power Plant Video: How hydroelectricity works Introduction of Hydropower Definition: It is the power generated by using water as the energy-supplying agent. Introduction of Hydropower Hydropower generation depends upon the availability of rainwater. Water cycle: Introduction of Hydropower Introduction of Hydropower Introduction of Hydropower Introduction of Hydropower Advantages of Hydropower Hydropower generation is non-wasting, self-replenishing and non-polluting. Advantages of Hydropower Non-wasting It is a physical phenomenon and no chemical change is involved. Water comes out unchanged from the turbine after imparting its energy and can be used again either for power generation or for irrigation. Advantages of Hydropower In fact, this is done in multi-purpose river-valley schemes like the Chambal Valley development in India and the Tennessee Valley development in U.S.A. In the case of the Chambal Valley development, power is generated with the help of the same water in three powerhuses, situated one after another on the river, before being released into irrigation canals. Advantages of Hydropower As against this, coal, oil or nuclear fuel can only be used once. Self-replenishing The supply of water is automatic and the water utilized in one season is replenished by nature in the next season. The water reaches the powerhouse site on its own-no mining operations and transportation are involved as in the case of coal or oil. Advantages of Hydropower Non-polluting Waterpower is clean as it does not produce any pollutants, whereas in the case of thermal or nuclear power generation pollution is inevitable, as toxic by-produc