| Author | Manickam, Ramesh Babu |
| Call Number | AIT Thesis no. AE-87-13 |
| Subject(s) | Spraying equipment
|
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Four hand held sprayers namely Hand pressure sprayer operating on
pressurization principle, Lever operated sprayer using continuous
pressurization technique, Ultra low volume sprayer employing atomization
technique, and Electro dynamic sprayer using electrical charging were
tested using an experimental setup. Experiments were conducted to measure
the variation in spray deposition efficiency and spray pattern over a
width of 3 m in the walking speed range 0.8 to 2.0 kmph and application
height 20 to 60 cm for given environmental conditions. Targets were
selected and constructed based on the plant geometry, shape and leaf area
of the paddy variety (RD-23). The percentage depositions of spray discharge on these targets were measured using a Photo spectrometer.
The Electro dynamic sprayer was observed to give 1. 5 to 2 times
better deposition than the sprayers operating on the principle of
pressurisation. The spray pattern was observed to be more uniform in the
case of Electro dynamic and Ultra low volume sprayers at 30 to 50 cm
height, over a width 1.8 to 1.9 m. The distribution was observed to extend
over a width 2.6 m in Lever operated sprayer whereas only very little
traces were obtained in Hand pressure sprayer at 0.7 m from the nozzle
central axis . In general, 30 to 50 cm height was observed to be the best
range to obtain better deposition. The variation due to speed was significantly observed only in sprayers employing pressurization technique.
The cost of operation was identified to be lesser in Ultra low volume and
Electro dynamic sprayers as the area of usage increases. |
| Year | 1987 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Singh, Gajendra ;Gupta, Chandra P.
|
| Examination Committee(s) | Gee-Clough, D.
|
| Scholarship Donor(s) | The Royal Norwegian Government |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |