Atmospheric humid air enters a coolng tower at a volumetrix

#ATMOSPHERIC HUMID AIR ENTERS A COOLNG TOWER AT A VOLUMETRIX PORTABLE#

Thus drinking water is generated using brackish water without depending on ambient air humidity by the water generator. The drinking water generation capacity can be enhanced in low humidity ambient air conditions, first by using the evaporative cooler with a brackish water supply to increase the air humidity near to dew point condition.

#ATMOSPHERIC HUMID AIR ENTERS A COOLNG TOWER AT A VOLUMETRIX PORTABLE#

Due to the solid-state nature of the semiconducting material, they are attractive for portable units although the low efficiency of condensing water at commonly experienced humidity is compounded by the high power consumption of Peltier coolers In this application, the air is forced over the cooling fans on the side that cools which lowers the temperature of the air to its dew point, causing water to condense, the resulting water is then collected. Recent efforts have been made attempting to utilize the Peltier effect of semiconducting materials in which one side of the semi-conducting material heats while the other side cools. The cost-effectiveness of an AWG depends on the capacity of the machine, local humidity and temperature conditions, and the cost to power the unit. This means they are relatively inefficient when located inside air-conditioned offices. As a rule of thumb, cooling condensation atmospheric water generators do not work efficiently when the temperature falls below 18.3вЊ (65вЏ) or the relative humidity drops below 30%.

Atmospheric water generators become more effective as relative humidity and air temperature increase. The rate at which water can be produced depends on relative humidity and ambient air temperature and the size of the compressor. The resulting water is then passed into a holding tank with a purification and filtration system to help keep the water pure and reduce the risk posed by viruses and bacteria which may be collected from the ambient air on the evaporator coil by the condensing water. A controlled-speed fan pushes filtered air over the coil. This lowers the air temperature to its dew point, causing water to condense. In a cooling condensation type atmospheric water generator, a compressor circulates refrigerant through a condenser and then an evaporator coil which cools the air surrounding it. It is said to take 310 Wh to make 1 liter of water. Direct drinking quality water generating devices using sunlight is also under development.

A proposed similar technique combines the use of solid desiccants, such as silica gel and zeolite, with pressure condensation. ДЄn alternative available technology uses liquid, or 'wet' desiccants such as lithium chloride or lithium bromide to pull water from the air via hygroscopic processes. This is the most common technology in use, but when powered by coal-based electricity it has one of the worst carbon footprints of any water source (exceeding reverse osmosis seawater desalination by three orders of magnitude) and it demands more than four times as much water up the supply chain than it delivers to the user. These systems decrease air temperature, which in turn reduces the air's capacity to carry water vapor. The rate of water production depends on the ambient temperature, humidity, the volume of air passing over the coil, and the machine's capacity to cool the coil. Many atmospheric water generators operate in a manner very similar to that of a dehumidifier: air is moved over a cooled coil, causing water to condense. In February 2021 General Electric was awarded 14 million dollars to continue development of their device. The American militaryвЂ™s DARPA has a program called Atmospheric Water Extraction which aims to develop a device which can provide water for 150 soldiers while being able to be carried by four people. Several inventors have developed air wells as a way to passively collect moisture from air.

These traditional methods have usually been completely passive, requiring no external energy source other than naturally occurring temperature variations. Historical records indicate the use of water-collecting fog fences.

The Incas were able to sustain their culture above the rain line by collecting dew and channeling it to cisterns for later distribution. 'Atrapanieblas' or fog collection in Alto Patache, Atacama Desert, Chile.

Atmospheric humid air enters a coolng tower at a volumetrix