Bringing Fog Harvesting technology to the shanty towns of Lima, Peru
Description
1. Thousands of families in the shanty towns of Lima are without a secure water source. They are not connected to the town's supply, and every fortnight have to buy water that is trucked in and sold at exorbitant prices.
2. Lima is a very foggy place. Especially in July to November, when a dense fog is blown across the city from the cold Pacific Ocean and sits over the city. But it never really rains - annual precipitation is less than 15mm per year.
3. Fog Harvesting is already being used successfully in wealthy places in Lima. It involves making a massive screen of shade-cloth mesh (8m x16m) and setting it up on a foggy hill. When the wind blows, little droplets of water are trapped on the mesh. These droplets get bigger and heavier and trickle down the mesh into a trough, where they are directed into a storage tank- providing a water source! Fog collectors can collect around 20 Litres per day per square metre of mesh.
So putting these three factors together, we've got one pretty exciting and innovative humanitarian engineering project!
Help support two Civil Engineering students who are spending their year working out the best way to make Fog Harvesting affordable for shanty towns, and are travelling to Lima in July to make it happen!
2. Lima is a very foggy place. Especially in July to November, when a dense fog is blown across the city from the cold Pacific Ocean and sits over the city. But it never really rains - annual precipitation is less than 15mm per year.
3. Fog Harvesting is already being used successfully in wealthy places in Lima. It involves making a massive screen of shade-cloth mesh (8m x16m) and setting it up on a foggy hill. When the wind blows, little droplets of water are trapped on the mesh. These droplets get bigger and heavier and trickle down the mesh into a trough, where they are directed into a storage tank- providing a water source! Fog collectors can collect around 20 Litres per day per square metre of mesh.
So putting these three factors together, we've got one pretty exciting and innovative humanitarian engineering project!
Help support two Civil Engineering students who are spending their year working out the best way to make Fog Harvesting affordable for shanty towns, and are travelling to Lima in July to make it happen!
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