Liquid aerosol generators are based on the use of liquid nitrogen or a solution of silver iodide in acetone. The former are mainly used to disperse fogs at airfields and highways, while the latter are used to artificially increase precipitation and to prevent hail, mainly in foothill areas.
In 2016, the Agency created a ground-based aerosol liquid generator NAG-07A (Fig. 1), which was based on the use of a solution of silver iodide in acetone.
Rice. 1. Ground aerosol generator NAG-07A
The generator provides a continuous operation time of at least 15 hours at a reagent flow rate of 1.2 l/h and a reagent volume (AgI solution in acetone) of 18 liters. The ice-forming efficiency of the generator is 0.8∙1015 ppm.
Important advantages of the developed generator are the possibility of long-term continuous operation, a fairly simple technology for preparing AgI acetone solutions, which makes it easy to change its concentration.
Field tests of the ground-based generator NAG-07A in works on artificial increase in precipitation from stratus clouds were carried out in 2016 on the territory of the Crimean Fruit Company in the Krasnogvardeisky district, the Republic of Crimea. In 2018, these generators were tested during work to protect crops from hail damage in the North Caucasian paramilitary service.
Main parameters and characteristics of NAG-07A
|№||Parameter name, units of measurement||Conclusion|
|1.||Reagent consumption, l/hour||1,2+-0,1|
|2.||Air tank pressure, MPa||0,8|
|3.||Operating pressure in the reagent bottle, MPa||0,13…0,14|
|4.||Air tank volume, l||45|
|5.||Reagent bottle volume, l||18,1|
|6.||Time of continuous operation of the filled generator, hour, not less||15|
|7.||Overall dimensions in transport position LxHxW mm||900х1095х390|
|8.||Net weight, kg||68+-5|
|9.||Placement category according to GOST 15150||1.1 (outdoors)|
Operating air temperature during operation, °С
|от +1 до +45 °С|