Despite airflow properties are of fundamental importance for the success of treatments and for reducing environmental impact due to drift effects, fan performances appear to attract less attention than other sprayer components such as nozzles. Farmers often ignore the amount of airflow delivered from, and adjust amount and flow direction in function of their subjective opinion about. When in excess, airflow produces dangerous environmental dispersion of pesticides and high energy consumption, whereas when it is insufficient penalizes the uniformity of pesticide application. The most recent machines and technologies, supported by geolocalized information, require diversified configurations to implement choices suited to canopy characteristics and circumstances in which they operate. The first goal of this research is to gather information about the airflow in function of different fan configurations. Preliminary tests were carried out at a Service Workshop and Sprayer Inspection Center using a conventional sprayer machine (hydraulic pulverisation). The methodology followed the International standard ISO/FDIS 9898 for the measurement of the airflow rate at the intake and outlet side of the fan. In particular, a pipe connected to the suction side of the fan and a purposely designed frame were used for measuring the airflow rate at the intake and at the outlet side of the fan respectively. A torquemeter was used to investigate the power needed during fan working.
|Titolo:||Performance evaluation of different axial fans configurations|
FAILLA, Sabina Iole Giuseppina (Corresponding)
|Data di pubblicazione:||2018|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|