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008			110920s1987 th uu|m rtt 0| a1eng d
035			_a.b10151126
099		9	_aAIT Thesis no. AE-87-13
100	1		_aManickam, Ramesh Babu
245	1	0	_aComparative performance of spraying mechanisms under normal application range of speed and height of operations
260			_aBangkok : _bAsian Institute of Technology, _c1987
300			_a65 p.
490	1		_aThesis ; _vno. AE-87-13
500			_aA thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1987
520			_aFour 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.
650		0	_aSpraying equipment
700	1		_aSingh, Gajendra, _eChairperson
700	1		_aGupta, Chandra P., _eCo-Chairperson
700	1		_aGee-Clough, D., _eExamination Committee
710	2		_aThe Royal Norwegian Government, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. AE-87-13
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B19062
907			_a.b10151126 _bmnait _cs
902			_a241015
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909			_aBarcode : 30050003002168 _bCREATED : 1994-05-16 _cRECORD # : i10177735 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050120364673 _bCREATED : 2016-05-27 _cRECORD # : i12996956 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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