1989 Volume 51 Issue 4 Pages 33-39
A vertical wire electrode and a concentric collector ring were installed in a small film plastic greenhouse, water contained red dye was sprayed into the greenhouse by a non-heating fog machine.
Corona discharge currents and deposit densities of charged droplets on the collector ring were measured. The smaller the collector ring radius and the electrode wire diameter, the greater the corona discharge current and the deposit density. The discharge current of the saw teeth rings electrode was larger than that of the wire electrode, and the ring elecrode currents of saw teeth and the gear teeth indicated the maximum value at 25mm interval of their rings. However, the effect of the interval on the deposit density was little. The deposit densities decreased with relative humidity, and increased with corona discharge currents but the increase rate of deposit density became gradually small. The deposition on some plastic materials used for greenhouses were smaller than that on an aluminum plate.
As mentioned above, available data for electrostatic fog deposition in greenhouses were obtained.
