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- W28950844 abstract "Due to the growing energy demand in Nepal and its neighbouring countries, the focus on hydropower development in Nepal has increased. As a consequence, the Turbine Testing Laboratory (TTL) at Kathmandu University (KU) has been developed to handle performance testing of model turbines. However, the laboratory is not yet equipped with a test rig which can handle model tests according to the specications of the international standard for model tests of hydraulic turbines, IEC 60193. This master's thesis is one of the first stages towards the aim of developing turbine model test rigs in compliance with IEC 60193 at TTL. The objective of this project is to design a Francis model test rig for TTL, using the Francis test rig at the Waterpower Laboratory at NTNU as the initial design. The rig must full the accuracy requirements of IEC 60193 and it should be capable of a complete performance test for dierent sized turbines. The pressure tank and the draft tube tank are designed to have the same shape as the tanks at the Waterpower Laboratory, but with some difference in volume. The main shaft and bearing block will include systems to measure the speed of rotation, axial thrust, generator torque, and friction torque without the need of a hydraulic system. The guide vane angles are manually controlled and measured by a rotary encoder. The pressure dierence between inlet and outlet is measured by dierential pressure transducers, calibrated by a deadweight manometer. The flow rate is measured by an electromagnetic flowmeter which is calibrated using the volumetric method. At the outlet to the pumps, the temperature, oxygen level and pressure of the water is measured. 3D CAD drawings of the nal design are presented in this thesis. The most practical and space efficient placement of the test rig in the laboratory has been chosen based on discussions with the sta at NTNU and KU. The rig has been integrated in the main pipe system, and designed for both open and closed loop modes. Procedures for eciency measurements have also been developed. The work done in this thesis is an input to the EnergizeNepal project on developing a Francis model test rig at TTL." @default.
- W28950844 created "2016-06-24" @default.
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- W28950844 date "2014-01-01" @default.
- W28950844 modified "2023-09-24" @default.
- W28950844 title "Design of a Francis Model Test Rig at Kathmandu University" @default.
- W28950844 hasPublicationYear "2014" @default.
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