Understanding of the basic and efficient operation principles of hydrodynamic machines. Principles of the selection criteria of the optimal hydromachine based on the available load conditions. Get familiar to the operation and control of hydraulic machines as well as to their common working defects in applied conditions.

Description of the Course

Theory: Types of hydraulic machines, characterization and description. Equations of fluid motion, velocity triangles, efficiency. Certifigular pumps, piston pumps, positive displacement pumps. Characteristic working curves, cavitations. Operation of hydropower stations. Pelton, Francis and Kaplan hydromachines. Wind machines.

Laboratory: Experiments on operation efficiency of pumps and hydromachines, pressure increase in pumps, measure and draw characteristic operational curves of various pump types. Demonstration of flow cavitation phenomena, torque and power output in the shafts of the hydromachines.

Expected Course Outcome

After the end of the course, students should be able to 

• Understand the basic operation principles of pumps and hydromachines and their types
• Select and evaluate the optimal hydromachines based on operational criteria.
• Calculate and measure the efficiency of hydromachines.

Bibliography

Greek:

1. Παπαντώνης, «Υδροδυναμικές μηχανές: αντλίες-υδροστρόβιλοι», Εκδόσεις Συμεών, 2004.
2. Π.Κορωνάκη, «Eφαρμοσμένη ρευστομηχανική», Εκδόσεις ΙΩΝ, 2006.

English: