High-turndown desuperheaters launched by Spirax Sarco 25 October 2013

Steam systems specialist Spirax Sarco has introduced what the company is describing as "the industry's most comprehensive range of desuperheaters for precise control and efficient heat transfer when cooling superheated steam".

Turndown is claimed as up to 50:1, making these plant modules suitable for a range of plant types where the goal is to increase process efficiency by allowing waste and residual heat to be recovered and recycled.

Spirax Sarco also argues that its new 'plug and play' desuperheaters can protect process plant from damage caused by overheating. And it adds that they are provided as ready-to-install, engineered systems, fully assembled with all valves, pumps, steam traps, controls and ancillary equipment – saving installation time and project costs.

Like all desuperheaters, Spirax Sarco's new units reduce the temperature of superheated process steam by introducing finely atomised cooling water droplets into the steam flow. However, to be effective, the droplets must remain suspended in the downstream pipework for as long as possible, to avoid fall-out, which reduces efficiency and causes corrosion.

Spirax Sarco says its design eliminates those problems, and says that four designs are available: the Spray Nozzle Desuperheater; Spray Desuperheater; Venturi Type; and Steam Atomising desuperheater.

Brian Tinham

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Spirax Sarco Ltd

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