Oil Immersion Heaters

Oil Immersion Heaters

Oil immersion heaters are engineered to warm lubricating oils, hydraulic oils, process oils, and other compatible fluids in reservoirs, tanks, and process vessels. Oil generally transfers heat differently from water, and its viscosity can vary substantially with temperature; therefore, heater design should account for circulation, cold-start conditions, fluid degradation limits, and the required heat-up profile. A suitably low surface watt density can help limit local film temperatures and reduce the risk of oil degradation or coking. The element sheath, seals, and mounting arrangement must be compatible with the specific oil and operating conditions. Some systems require a circulation pump or an external heating loop to achieve uniform temperature, particularly in larger tanks or with high-viscosity fluids. Correct controls and independent over-temperature protection are important to maintain the oil within its recommended temperature range.