NOV supplies both passive and active coolers to the oil and gas industry.
Subsea Active Cooler The subsea Active Cooler is a shell and tube cooler based on forced convection. The pump, motor and power control is the first qualified subsea design of its kind, where the oil filled motor is isolated from the pump by a magnetic coupling. The pump module including variable frequency drive motor controller, is designed for a subsea installation down to 3000 m. The motor is speed controlled, which makes it possible to operate the cooler within a predefined temperature range. The VSD and control system is fully redundant, and is qualified according to ISO 13628-6.
Main benefits for active cooling compared to passive cooling:
Subsea Passive Cooler
Subsea Production Systems
National Oilwell Varco Denmark I/SPriorparken 480DK-2605 BrondbyDenmark CVR: 24255298
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