| Author | Sufrizal |
| Call Number | AIT Thesis no.WA-86-18 |
| Subject(s) | Centrifugal pumps--Testing
|
| Note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The development of small hydropower is an alternative to replace non renewable energy such as wood and other traditional fuels, especially in remote areas. It can also meet the needs of isolated rural communities and permit greater use of locally available materials. One of the hydraulic components of hydropower is a turbine. Since the number of small hydraulic turbines is extremely limited, the use of pumps operated as turbines by reversing the flow is an excellent alternative. This study is concerned with an experimental investigation on locally made centrifugal pumps used as turbines. They are centrifugal pumps of 4 in. and 3 in. with specific speed 33.6 and 30 . 2. The main objective of this study is to compare the characteristics of normal pump operation with the characteristics of the same pump operated as a turbine at the best efficiency point. It was found that the peak efficiencies of the pumps operated as the turbines are less than the peak efficiencies of the pumps operated as normal pump operation. The speeds and power outputs of the pumps operated as the turbines at the best efficiency point are also less than the speeds and power inputs of the pumps operated as normal pump operation at the best efficiency point. But the capacities and heads at the best efficiency point of the pumps operated as the turbines are higher than they are as the pumps at their best efficiency point. To predict characteristics of a pump operated as a turbine for the same type of the pumps, conversion factors Cn, CQ, CH, and Cry can be used . Dimensionless characteristic curves of the pumps can be used for pump selection as a turbine by the Kittredge method, but, if the capacity of the model is very different from the prototype, the efficiency curve must be corrected by using correction factor Cr • |
| Year | 1986 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Prida Thimakorn |
| Examination Committee(s) | Tawatchai Tingsanchali ;Christoph, Ing. Fried |
| Scholarship Donor(s) | North Sumatera University |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1986 |