Journal of Refrigeration Magazines Agency Co., Ltd.
Doi
Abstract
This study investigates the atomizing law of the nucleator nozzles, which are an important atomizing device for domestic outdoor snow-making units. Air and water are used as the medium, and the Sauter mean diameter, atomization flux, and spray angle of the domestic KBJD-1 nucleator nozzle are studied by a high-speed camera and laser particle size analyzer. The results show that the Sauter mean diameter decreases exponentially with an increase in air supply pressure but increases exponentially with an increase in water supply pressure. Moreover, the rate of change of the particle size gradually decreases with an increase in the gas-liquid pressure ratio. At the same experimental condition of water supply pressure at 1.0 MPa, when varying the air supply pressure from 0.3 MPa to 0.8 MPa, the atomization flow rate approximately decreases linearly with the air supply pressure. The spray angle first increases and then decreases with an increase in the air supply pressure. When the air supply pressure reaches 0.55 MPa, the spray angle reaches its maximum value
