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Performance of Indigenous Water Lifting Devices Used in Bangladesh- a Case Study in Mymensingh District

M. A. Haque
Assistant Professor
Department of Farm Power and Machinery Bangladesh Agricultural University, Mymensingh, Bangladesh

M. D. Hussain
Professor
Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh, Bangladesh

C. K. Saha
Lecturer
Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh, Bangladesh

M. I. N. Khan
Post Graduate Student
Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh, Bangladesh

Abstract/ Executive Summary:

This study was carried out at field level to test and evaluate the performances of two manually operated, widely used indigenous water lifting devices, namely, Don and Swing Basket For heads up to .075 m the Don produced higher discharge than the Swing Basket. When the lift height was increased further (upto 1.25m) the discharge of the Don went down rapidly. Power requirement by both devices increased with the increase of head, and at a particular head, power requirement by the Swing Basket was found to be much higher than that of the Don. The efficiency of the Don was found to be higher than that of the Swing Basket. The highest efficiency of the Don was 46.44% at a head of 0.75m and an average discharge of 3.47 lit/sec, whereas that of the Swing Basket was 18.25% at a head and average discharge of 0.75m and 3.43 lit/sec respectively. Average water lifting cost per unit volume of water was found to be Tk. 1.04/m³ for the Don and the Swing Basket, respectively.

Keywords: Performance, Indigenous, Don, Swing basket

Location: Sarchapur village at Haluaghat Thana and Goneshampur village at Mymensingh Sadar Thana

Start Date:

End Date:

Program Area: Socio-economic and Policy

Non-commodity: Performance

Objectives:

i) To test and evaluate the on-farm performances of "Don" and Swing Basket.

ii) To assess the energy requirement and cost involved in lifting water by these devices.

Methodology:

This study was carried out at the rice growing belt of Sarchapur village at Haluaghat Thana and Goneshampur village at Mymensingh Sadar Thana where Don and Swing Basket are being used for lifting irrigation water from canals. Both the devices were tested at different heads to evaluate their performances. Show the pictorial view of the Don and dimensions of the Swing Basket respectively and also dimensions of Don and Swing Basket respectively. Operation of the devices were done under normal and as usual field conditions. Each test was replicated five times. In each term the time of operation, no. of strokes, discharge per stroke, discharge per second, force required per stroke were measured. The average of the five readings was taken as test data. The particular Swing Basket and the Don under study were selected as the representative of most of the devices with their dimensions available in the locality. It is one of the most ancient manually operated water lifting devices used to lift surface water for irrigation. Many of them are made of palm trees, but wooden and steel ones are also used. This is a mini boat shaped trough, closed at one end and open at the other. The closed end of the trough is tied with a rope or chain to a long bomboo, which is pivoted as a lever on a post. A counterweight, a large stone or a ball of dried mud, is tied to the other end of the lever. The open end of the trough is hinged at the discharge point. The other end of the trough is dipped into water by applying the body weight and force applied by the operator. Water is lifted mostly by the action of the counter-weight on the beam in addition to a upward pull by the operation and is discharged automatically through the open end. Farmers usually operate these devices for 10 to 15 minutes at a stretch and then take a break of 5 to 6 minutes in their usual practice to irrigate their land. These devices were operated continuously for 1 hr to see the effect of time upon speed and pulse rate.

Source of Information: Progress. Agric. 11 (1&2) : 207-213, 2000, ISSN: 1017-8139

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Don and Swing Basket are the widely used indigenous water lifting devices for low cost irrigation in Bangladesh. From the performance study, it may be concluded that the discharge from the Son is higher at lower head (up to 0.75 m) than that from the Swing Basket. For further increase in head, discharge of Don reduces rapidly than that of the Swing Basket, Power requirement by the Swing Basket was much higher than that by the Don at any particular head within the range of head considered in the study. Pumping efficiency of the Don was found much higher than that of the Swing Basket.

Knowledge Management: Journal