| Author | Vu Tuan Khanh |
| Call Number | AIT Thesis no. AE-95-02 |
| Subject(s) | Pumping machinery
|
| Note | A thesis submitted in partial fulfilment
of the requirement for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The performance of commonly used, axial flow pump manufactured in Vietnam was evaluated. The pump tested had a 37 cm diameter thrust impeller and 40 cm outlet diameter. The pump was first evaluated to establish the base performance curves for three total static heads of 1.45 m, 1.75 m and 2.15 mat the same recommended speed of 980 rpm. A field survey of the pump operation at 12 pumping stations was carried out. The field survey found that the problems of the original pump were concern with lubricating system, pump shaft and brass sleeve. These parts of the pump were modified. Modified pump was tested again at the same conditions used for testing the original one. Maximum efficiency of the original pump was found to vary from 56.11 to 53.15 % when total static head varied from 1.45 m to 2.15 m. At these total static heads the discharge, total head and power input varied from 387 to 347 lit/s, 4.25 to 4.6 m and 28.72 to 29.38 kW, respectively. The peak performance of the modified pump varied from 57.63 to 54.52 % when total static head varied from 1.45 to 2.15 m. At these total static heads for modified pump the discharge, total head and power input varied from 388 to 346 lit/s, 4.29 to 4.63 m, and 28.23 to 28.91 kW, respectively. It is important to note the actual efficiency of this pump was much lower than that claimed by the manufacturers. Performance evaluation of the original pump and modified pump indicated that the modified pump performed better than the original pump. The efficiency of the pump after modification increased by more than 1.5 %, power input decreased by 1.7 %. More meaningful thing was that the operation life of modified pump will be longer, and operation is more easier as the daily lubrication was eliminated. This pump will have a wide scope of adaptation due to high efficiency, simple operation and long life. |
| Year | 1995 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Salokhe, Vilas M.; |
| Examination Committee(s) | Gee-Clough, D.;Gupta, C.P.; |
| Scholarship Donor(s) | DANIDA; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1995 |