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Comment Heat Transfer

A new approach to maintaining tubular heat exchangers

By Gerald Ondrey |

At the 2nd Annual ChemInnovations Conference and Expo (Houston; September 13–15), Hemi-O Technologies LLC (Corpus Christi, Tex.; dixonengineering@gmail.com) introduced its patent-pending technology that enables external access to individual tubes in a heat exchanger while the exchanger is in service and operating at full capacity. The so-called Hemi-O (heat exchanger maintenance and inspection — online) allows safe and leak-free physical isolation of, and external access to, each and every tube, thereby enabling tube I.D. cleaning, tube inspection and testing; and plugging of failed or failing tubes — all performed online using conventional methods for cleaning, inspecting and plugging. “This technology will allow an end-user to be far more proactive in maintaining their exchangers from both a heat transfer perspective and from a condition monitoring perspective, says president Chris Dixon, who invented the technology. Conventional maintenance is normally performed off line, which requires waiting for a plant turnaround or — for severe fouling — can lead to an unscheduled shutdown and associated costs. Benefits of online servicing include improved heat-exchanger efficiencies, reduced energy consumption…
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