HTWU65-43

this configuration is a HTWU unit built on a removable U-tube bundle for high-temperature water heating. High-temperature water flows through the tube side, so the heads rather than the shell set the pressure limit. Physically, the unit runs a 6-inch shell, 60-inch shell length, and roughly 64-1/4 inches overall in a 4-pass arrangement. That works out to about 22.1 square feet of heat transfer surface on 3/4-inch O.D. tubes. That combination is cataloged as HTWU65-43. The build specifies cast iron bonnets, steel shell, copper tubes, and steel tubesheets. Design ratings run to 150 PSI on the shell side, 400 PSI on the tube side, and 375°F maximum temperature. Typical duty includes converter duty on HTHW loops, high-temperature hot water distribution, and campus and district energy systems.