Dinara Almanova17 years oldKazakhstan

“An innovative method of irrigation using condensation process”https://drive.google.com/file/d/1SkyhO1PJ-

Uhm57VriX7HaEZSOUGG1g19/view?usp=sharingWater scarcity has a huge impact on food production.

Without water people do not have a means of watering their crops and, therefore, to provide food for the fast growing population. According to the International Water Management Institute, agriculture, which accounts for about 70% of global water withdrawals, is constantly competing with domestic, industrial and environmental uses for a scarce water supply. In attempts to fix this ever growing problem, many have tried to form more effective methods of water management.

One such method is irrigation management. Irrigation is a method of transporting water to crops in order to maximize the amount of crops produced. Many of the irrigation systems in place do not use the water in the most efficient way. This causes more water than necessary to be used or for there not to be enough water to ensure healthy crops. According to the World Bank, irrigation management works to upgrade and maintain irrigation systems, such as groundwater irrigation, that are already in place and expands the areas of irrigation to increase the amount of crops being produced.

My innovative Irrigation System was designed for the purpose of providing water for irrigation, meanwhile, recreating the necessary natural conditions in the laboratory. The cone-shaped construction made of thin galvanized sheet enables quick heating with humid air. The system employs a fan to draw in humid air; the humid air is then forced into a coiled copper pipe which extends below the ground, where the humid air condenses to water. This water is then stored in a tank and used for irrigation purposes. It is estimated 11ml of water can be harvested from every m3 of air.

The pipe coil begins at depth of 0.5m below the surface, where the temperature of soil, and therefore the pipe, is approximately 20°C. The coil extends 2m below this point where the temperature is reduced down to below 5°C. Based on an average expected air velocity of 55m/s, the rate of condensation was found to be 157 L/day with a pipe length of 31m.

There are 5 main processes: Air drawn into turbine. Warm and

humid air is driven underground by a turbine intake which, when a wind is at a low strength, is powered by the solar-batteryunit.

Air flows underground. At a depth of 2m, soil temperature drops considerably (around 5 degrees at the chosen site). As soil surrounds the copper piping, the air temperature within can reduce enough to form condensation.

Condensation process. Air travels through copper coils and reacts with copper material placed within the coils. This material creates more surface area for the air to react with and the air temperature drops rapidly as a result, reaching 100% humidity. Large amounts of condensation form and drip down into the underground tank. Water is efficiently produced from air.

Water collects in tank. The water produced is collected in an underground rainwater tank. Water pumped for irrigation. A submersible pump drives the water produced up the

center of the unit and through a low pressure semi permeable hose to irrigate crops via the method of sub surface drip irrigation. Low pressure hoses allow pumps to operate at low levels of power, ideal for a solar powered system.

We use (platforms): Lego; Arduino;We use (sensors): Temperature; Humidity; Water level; Color; Light;In addition, arid regions are inherent in having a right angle

of sunlight, for this reason we considered it prudent to install solar cells to power the entire robot. Four small solar panels were used, each of which gives 3-5V of electricity.