Large Engine Fuel Heating As part of a new design ship development project, Durex was asked to provide a new design in-line circulation heater that was light weight, very compact and could operate on AC or DC power. It also needed an integrated explosion proof control system. Durex SolutionThe only way to meet the challenging design criteria was to use all aluminum tubular heater elements, circulation vessel, custom machined fittings and control box to house the control electronics. We developed a unique nested coil design to optimize heater surface area as well as allow for independently controlled AC and DC circuits. Multiple temperature sensor points were incorporated to ensure redundancy of primary and limit controls as well as test circuits that could be remotely tested from the shi

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