Internal Coil

The heat exchange coils inside the cylinder are typically arranged in a spiral or serpentine configuration and installed tightly against the inner wall of the cylinder. Their primary function is to heat or cool the material within the cylinder using the heat transfer medium flowing through the tubes, thereby controlling the temperature during reactions or processing operations. Materials with excellent thermal conductivity—such as carbon steel, stainless steel, or copper—are commonly used in manufacturing, and all interfaces require sealing treatments to prevent leakage of the heat transfer medium from contaminating the contents. Key technical parameters include: 1. Tube diameter range: typically 25 mm–159 mm; 2. Tube wall thickness: selected between 2 mm and 6 mm depending on design pressure; 3. Heat exchange area: calculated based on cylinder dimensions and process requirements, generally ranging from 0.5 to 2.0 square meters per cubic meter of cylinder volume; 4. Media flow rate: recommended range of 0.5–2.0 m/s for liquids or 10–30 m/s for gases; 5. Design pressure: usually 0.6 MPa–4.0 MPa, with some applications requiring pressures exceeding 10 MPa.