Total Application Support Solves Circulation Heater Request Problem: A large overseas engineering firm was contacted by a Korean petrochemical company to build an up-to-date processing plant. The requirements were a methane preheater to heat 155 pounds (70 kg) per hour of hydrogen from 50°F (10°C) to an outlet temperature of 645°F (340°C), at an operating pressure of 450 psig (65 kPa), with a maximum allowable pressure drop 10 psi (1.5 kPa) Solution: Watlow recommended a 6-inch (15 cm) circulation heater with 1-inch (25 mm) inlet, 1.5-inch (38 mm) outlet, 500 pound (226 kg) steel construction with fifteen 304 stainless steel elements designed for maximum 25 W/in 2 (3.9 W/cm 2 ) watt density. Additionally, the heater assembly had a NEMA 4 housing and Type K thermocouples for process and hi

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