Fog Harvesting | Get Water From Fog
Fog Harvesting | Get Water From Fog Well, you must be wondering by now that how is it possible to get water from fog. How can anyone extract water from fog and make it safe enough to drink? Well hold on your breath my friends, today we are going to talk about a new sustainable technology which allows harvesting water from fog. What is Fog Harvesting? Fogs have the potential to provide an alternative source of fresh water in dry regions and can be harvested through the use of simple and low-cost collection systems. Captured water can then be used for agricultural irrigation and domestic use. Research suggests that fog collectors work best in locations with frequent fog periods, such as coastal areas where water can be harvested as fog moves inland driven by the wind. Fog harvesting technology consists of a single or double layer mesh net supported by two posts rising from the ground. Fog catcher is a meter by meter of stretched out mesh over copper piping. It allows fog to condensate into droplets of water and flow down toward a trough into a barrel or bucket. The material used for the mesh is usually nylon, polyethylene or polypropylene netting which can be produced to various densities capable of capturing different quantities of water from the fog that passes through it. The collectors are positioned on ridgelines perpendicular to prevailing wind and capture and collect water when fog sweeps through. The collector and conveyance system functions due to gravity. Water droplets that collect on the mesh run downwards and drip into a gutter at the bottom of the net from where they are channeled via pipes to a storage tank or cistern. Typical water production rates from a fog collector range from 200 to 1,000 liters per day. Advantages of Fog Harvesting Atmospheric water is generally clean, does not contain harmful microorganisms and is immediately suitable for irrigation purposes. Once the component parts and technical supervision have been secured, construction of fog harvesting technology is relatively straightforward and can be undertaken on site. Fog harvesting is particularly suitable for mountainous areas where communities often live in remote conditions, capital investment and other costs are generally found to be low in comparison with conventional sources of water supply. Barriers to implementation Several challenges and issues have emerged from fog harvesting projects implemented to date: Where fog is a seasonal source, water has to be stored in large quantities for dry season use If not properly maintained, water quality becomes an issue during low-flow periods Fog water collection requires specific environmental and topographical conditions, limiting its application to specific regions Procurement and transportation of materials is hindered by remote locations and steep terrain Strong winds and snowfall can result in structural failure during the winter season Water yield is difficult to predict, requiring feasibility studies prior to large scale implementation For harvesting to be effective, frequent fogs are needed and sufficient water collected for the investment to be cost-effective. This limits the technologies to areas with specific conditions. Conclusion Every technology has its advantages and it's limitations, but considering the amount of water we require, it's definitely worth a shot in those climatic areas where there is frequent fog.