The details are as follows:
P: Output unit: kW (kilowatt) The power transmitted from the end of the unit.
H: Unit of height: m (meter) The effective head acting on the turbine, which is equal to the difference between the reservoir water level and the downstream water level ( that is: gross head) minus the pressure loss of the water diversion part, the pressure loss △h, according to experience, it is generally 3% to 10% of Hg (gross height), and the smaller value is used for shorter water distribution channels.
Q: Flow unit: m3/s (cubic meter/second) indicated flow rate of the turbine in the hydroelectric power station.
η: The efficiency of the hydraulic generation unit, including turbine efficiency and generator efficiency η, is not only related to the turbine type and parameters and generator, but also changes with. changets under the operating conditions of the unit. This is not a fixed value.
Suppose a hydroelectric power generation reservoir has a flow rate of 9,000 cubic meters/s, a height of 40 m, and a power generation efficiency of 75%. How many kilowatt hours are generated per day?
How many kilowatt hours are generated by the turbine? The ratio of the power N to the power Np^0 of the water flow through the turbine is called the turbine efficiency, represented by eta. Obviously, efficiency is the efficient use of the energy of the water flow by the surface turbine. It is a dimensionless physical quantity expressed as a percentage (%). ?
A hydraulic turbine is an electrical machine that converts the energy of water flow into rotating mechanical energy. It is a turbine machine among fluid machines. As early as around 100 BC, the prototype of a hydraulic turbine - a water wheel - was apappeared in China, used to lift irrigation and drive grain processing equipment. Modern hydraulic turbines are mainly installed in hydroelectric power stations and are used to drive generators to produce electricity.
Detailed information
Hydraulic turbines are divided into two categories: impact type and impact type.
(1) An impact turbine is a turbine that converts the pressure potential energy and kinetic energy of water flow into mechanical energy. It uses kinetic energy and potential energy to operate at the same time, primarily using the. potential energy of the water flow.
(2) Pelton turbine is a turbine that converts the energy of water flow into the kinetic energy of high-speed water flow, and then converts its kinetic energy into mechanical energy. the water flow.
Given that the dIf different hydropower plants have different hydraulic elements, it is necessary to choose turbines that adapt to different conditions. Therefore, there are different types of impact and impact turbines.
Baidu Encyclopedia - Water turbine
The work done by water per second W=mgH =ρgVH= 1000*10*9000*40=
Converted into electrical energy in one day = 75%W*24*60*60= The unit is Joule then converted to kilowatt hours
Please do the math Do it yourself