Ask an expert how to calculate the power of a hydraulic turbine
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I want to recover the power of a stream of water. The main parameters are as follows: 1. The pressure of dynamic water is 3.8MPa, the temperature is 80℃, the flow rate is 60t/h, and the pressure after passing through the hydraulic turbine is required to be 0.6MPa. 2. The hydraulic turbine works on the pump. The parameters of the pump are that the inlet water is normal pressure and the outlet is designed to be 1.0MPa. Problems: 1. How to calculate the power of a hydraulic turbine? What is the efficiency of a general hydraulic turbine? 2. To meet the requirements of 2. above, what is the size of the pump? I hope colleagues who know more can give me some advice and tell me how to calculate it. Thank you very much!
This question should not be difficult to calculate. 1. The efficiency of general hydraulic turbines is more than 85% conservatively, and the normal range is 90~95%. 2. The pressure head loss of your water is 3.8-0.6=3.2MPa, (if the efficiency of the hydraulic turbine is 90%) you multiply it by 90%, which is the output power of the pump. It is known that the water outlet pressure head is 1.0MPa, and it is very simple to calculate the size of the pump.
The person above has made it very clear. I would like to add that using Bernoulli's equation and taking the front and rear of the turbine as a reference point, the flow rate of the water remains unchanged at these two points, that is, the kinetic energy of the water remains unchanged. If we ignore the head difference and mechanical resistance (these two points are very small, since the mechanical efficiency of the turbine and the efficiency of the pump are estimated later, they can be ignored), then the part of the water energy converted into mechanical energy is the static pressure energy difference, which is relatively simple.
Water is right, I have already calculated it, and I have forgotten what I learned after not using it for a long time.
Unfortunately, after calculation, our equipment department said that there is no domestic company that designs hydraulic turbines, which is depressing! I would like to ask everyone if this is true?
Dalian Deep Blue Pump can make it for you. You can ask again. The hydraulic turbine our company just installed was made by them.
Zhejiang: Garrett Ebara is nothing more than a Sino-Japanese joint venture.