{"id":14303,"date":"2025-03-13T07:54:56","date_gmt":"2025-03-13T07:54:56","guid":{"rendered":"https:\/\/gairscomp.com\/?p=14303"},"modified":"2025-03-14T05:54:39","modified_gmt":"2025-03-14T05:54:39","slug":"why-ro-water-is-essential-for-water-injected-oil-free-screw-compressors","status":"publish","type":"post","link":"https:\/\/gairscomp.com\/es\/why-ro-water-is-essential-for-water-injected-oil-free-screw-compressors\/","title":{"rendered":"Por qu\u00e9 el agua de \u00f3smosis inversa es esencial para los compresores de tornillo con inyecci\u00f3n de agua"},"content":{"rendered":"

Water-injected screw compressors, such as the OGW series<\/a>, rely on pure water for lubrication, cooling, and sealing. Unlike traditional oil-lubricated compressors, these oil-free compressors use water as a natural coolant and lubricant, ensuring clean compressed air with high efficiency. However, to maintain optimal performance and extend the service life of the air end, using Reverse Osmosis (RO) water is crucial. This blog explains why RO water is necessary, the risks of poor water quality, and how to maintain a stable compressed air system.<\/p>\n

Why Do Water-Injected Screw Compressors Require RO Water?<\/span><\/h3>\n

1. Water’s Role in a Water-Injected Oil-Free Compressor<\/span><\/h4>\n

In a water-injected screw compressor, water is continuously sprayed into the air end. It serves three key functions:<\/p>\n

Enfriamiento<\/strong><\/span>: Water absorbs heat generated during compression, keeping the air end temperature below 55\u00b0C\u2014eliminating the need for an intercooler.
\nLubrication<\/strong><\/span>: The water film reduces friction between the screw rotor and star wheels, ensuring smooth operation.
\nSealing<\/strong><\/span>: Water fills the micro gaps between rotor grooves and star wheel teeth, improving the volumetric efficiency of the compressor.<\/p>\n

Since this water is recirculated, its quality directly impacts the compressor\u2019s efficiency, reliability, and lifespan.<\/p>\n

2. The Importance of RO Water<\/span><\/h4>\n

RO (Reverse Osmosis) water is purified water with minimal impurities, ensuring:<\/p>\n

No Scaling<\/strong><\/span>: RO water removes calcium (Ca\u00b2\u207a) and magnesium (Mg\u00b2\u207a) ions, preventing scale buildup inside the air end, piping, and cooler.
\nBetter Cooling Performance<\/strong><\/span>: Pure water has better heat absorption properties, improving overall cooling efficiency.
\nExtended Air End Life<\/strong><\/span>: Using hard water leads to corrosion, bacterial growth, and sludge accumulation, reducing compressor efficiency.
\nStable System Operation<\/span><\/strong>: RO water minimizes clogs in water filters and prevents blockages that can reduce airflow and cause system failures.<\/p>\n

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3. Why a Water Softener Alone is Not Enough?<\/span><\/h4>\n

A water softener removes hard minerals like calcium and magnesium using an ion-exchange resin. However, it does not:<\/p>\n

\u274c Remove all salts and dissolved solids.
\u274c Prevent bacterial growth in the water loop.
\u274c Guarantee the required low conductivity for long-term compressor operation.<\/p>\n

That\u2019s why even with a water softener, the compressor still requires RO water to meet the strict quality standards necessary for long-term reliability.<\/p>\n

Problems Caused by Poor Water Quality<\/span><\/h3>\n

If the water quality is not maintained, several issues can arise:<\/p>\n

1. Scaling \u2013 The Silent Killer<\/span><\/h4>\n

Cause<\/span>:<\/strong> Hard water contains high levels of calcium and magnesium<\/strong><\/span>, which form scale deposits<\/strong><\/span> inside the compressor system.
\nEffects<\/strong><\/span>:<\/p>\n