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Expansion and deaeration system operates at atmospheric pressure
Published: March 2011
Armstrong’s Armex II series of high-volume pressurisation and degassing systems enables the requirements of sealed heating and chilled water applications to be met with a much smaller and safer vessel. The space-saving benefits arise from the design of the tank, which accepts a greater volume for fluid expansion compared to traditional tanks. They have a specially designed receptacle instead of a fixed air-cushion vessel. Armex II has acceptance levels approaching 90% and operates at atmospheric pressure, so it is exempt from the statutory health-and safety regimes. Make-up water is introduced as required. The package is micro-processor controlled, so it can be used for a wide range of temperatures, pressures, transfer volumes and variations in code regulations and installation practices. System monitoring and diagnostics are available with a BMS interface or remote communication module. The Armex II controllers also manages system deaeration. The controller passes adjustable volumes of water out of the pressurised circuits into the vessel on a timed basis to continually deaerate the system. For more information on this story, click here: March 2011, 183 Related articles: 
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