Tubular electric heaters undertake the task of heat input in heat transfer oil systems, and their thermal efficiency can be estimated by the formula η = Q effective / P input × 100%. For procurement personnel, when comparing different solutions, attention should be paid to the proportion of heat effectively transferred to the oil under the same power. The JRY-25 tubular electric heater adopts a sheathed structure, and the design considers the contact area between the sheath and the heat transfer oil, which helps reduce the risk of local carbonization.
Direct immersion heating tubes usually place resistance wires directly in the oil, which heats up quickly but easily causes local overheating of the oil. The JRY-25 tubular electric heater isolates the electric heating element through a metal sheath, so that heat is transferred by conduction and convection, making it suitable for heat transfer oil or oil and media with good heating effects. This structure can reduce the tendency of oil carbonization and extend the service life of the oil.
Plate heaters have higher power per unit area, but greater fluid resistance. The JRY-25 tubular electric heater adopts a tubular structure, so the resistance when fluid passes through is relatively small, making it suitable for high-precision thin oil station tank heating. The installation type can be fixed with bolts, and the waterproof structure facilitates use in outdoor or humid environments.
The rated voltage of the JRY-25 tubular electric heater is 220V or 380V, the power range is 0.5–5kW, and the working temperature can reach 300°C. When purchasing, it is necessary to confirm the oil type, tank volume, and required heating time to match the power. The sheath material can be carbon steel, stainless steel, or PTFE, determined according to the corrosiveness of the oil.
This model is suitable for equipment such as thin oil stations, hydraulic stations, and heat transfer oil furnaces. In thin oil station tanks, the waterproof structure can prevent moisture intrusion from causing insulation degradation. For high-precision lubrication systems, uniform heating helps maintain stable oil viscosity.
