Quick Answer
Harvesting water for a swamp cooler typically involves collecting rainwater, utilizing greywater, or drilling a well. The collected water should be UV-treated or disinfected to prevent bacterial growth. A 100-gallon storage tank is a suitable size for a small to medium-sized swamp cooler.
Effective Rainwater Collection Systems
A key aspect of a swamp cooler’s water harvesting system is a rainwater collection system. For a typical small to medium-sized swamp cooler, a 1,000 to 2,000 square foot roof catchment area is sufficient. To maximize collection efficiency, use multiple gutters and downspouts and ensure a slope of at least 1/4 inch per foot to allow water to flow freely. Installing a first flush device will help to prevent debris and contaminants from entering the storage tank.
Utilizing Greywater for Evaporative Cooling
Greywater, which is wastewater generated from sinks, showers, and washing machines, can be a valuable resource for a swamp cooler. To implement a greywater system, you’ll need to install a greywater tank and connect it to the swamp cooler’s water supply line. A 200 to 500 gallon greywater tank is a suitable size for a small to medium-sized swamp cooler. To ensure greywater quality, consider adding a UV treatment system to the tank.
Well Drilling for Swamp Cooler Water Supply
Drilling a well is another option for providing a swamp cooler’s water supply. A well with a depth of 40 to 80 feet is typical for a small to medium-sized swamp cooler. When drilling a well, consider the local geology and groundwater aquifer to ensure access to a reliable water source. A well casing diameter of 6 to 8 inches is suitable for most swamp cooler applications.
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