Evaluation of a centrifugal and an axial flow water pump for pumping soil slurry | |
| Author | Ali, Yousaf |
| Call Number | AIT Thesis no. AE-92-4 |
| Subject(s) | Pumping machinery--Testing Centrifugal pumps--Testing |
| Note | A thesis submitted in partial fulfillment of requirements for the Degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The performance of two different type of water pumps were evaluated for pumping artificial slurry. The first pump tested was, a modified centrifugal pump (20 cm diameter semi open impeller and 7.6 cm outlet diameter) made in china. The second pump tested was a local made, axial flow pump (15 cm diameter and 5.0 m long). Both pumps were first evaluated for pumping water to establish the base performance curves. Centrifugal pump was tested for two total static heads i.e 2.0 m and 3.0 musing three speeds,1200, 1400 and 1600 rpm and 5 slurry samples with percentage total solid contents (%TS of 7, 13, 18, 21 and 23%), respectively. Maximum efficiency of centrifugal pump varied from 60.8 to 55%, when slurry %TS varied from 7 to 21 % as total static head varied from 2.0 m to 3.0 m. Mass flow rate varied from 14.7 to 14.24 kg/s, total head varied from 10.23 to 9.64 m and power input varied from 2.27 to 2.48 kW. When pump was tested for 23% TS, the efficiency reduced greatly and varied from 44 to 41.4 %, mass flow rate also reduced and varied from 13.4 to 13.1 kg/s and power input significantly increased and varied from 2.81 to 2.85 kW, respectively. Axial flow pump was tested for slurry having 8, 12 and 15% total solid contents at two static heads 1.0 m and 1.75 m. The peak efficiency of pump varied from 32.61 to 21.73 for pumping slurry up to 15% TS. Mass flow rate varied from 46.72 to 31.67 kg/s, total head varied from 2.8 to 2.72 m and power input varied from 3.82 to 4.24 kW as static head varied from 1.0 m to 1.75 m. Performance evaluation of two pumps indicates that China make (modified impeller) centrifugal pump was more efficient for pumping slurry with 7 to 21 % total solid contents. Its overall performance was not significantly affected by changing static head. This pump can be successfully used for pumping slurry, from fish ponds. This pump has a wide scope of adaptation as a cheap and improve technology for fish pond cleaning. |
| Year | 1992 |
| 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) | Gee-Clough, D. ;Singh, Gajendra |
| Examination Committee(s) | Gupta, Chandra P. ;Maohua, Wang ;Salokhe, Vilas M. |
| Scholarship Donor(s) | DAAD (Republic of Germany); |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology,1992 |