The heating section is a critical component of the Integrated Beverage Pasteurization and Cooling Tunnel System. Its primary function is to uniformly and precisely elevate the temperature of the beverage product (such as juice, milk, or other liquid drinks) to a specific target range, typically between 72°C to 95°C (161°F to 203°F), to achieve effective pasteurization. This process eliminates pathogenic microorganisms and deactivates enzymes, thereby ensuring product safety and extending shelf life while maintaining the beverage's sensory and nutritional qualities. The section is designed for controlled, efficient heat transfer as the product flows through the tunnel. Constructed from stainless steel (AISI 304/316L) with food-grade elastomers for gaskets and seals, the heating section is built to meet hygiene and durability requirements. It operates within a defined set of parameters: operating pressure of 1.0–1.6 MPa, heating capacity of 150–500 kW, temperature range of 60–95°C, temperature control accuracy of ±0.5°C, flow rate of 5–50 m³/h, electrical supply of 380–480 V AC (three-phase, 50/60 Hz, per IEC 60038), power consumption of 10–30 kW (excluding heating capacity), insulation thickness of 50–100 mm, weight of 1000–5000 kg, dimensions (L×W×H) of 3000–12000 × 1000–2000 × 1500–2500 mm, and ingress protection rating of IP54–IP65 (per IEC 60529). These values are reference ranges and must be confirmed for the specific model and application. The heating section interfaces with upstream and downstream components of the tunnel system, including cooling sections and control systems. It is designed for integration into a complete pasteurization line, with connections for product inlet/outlet, heating medium supply/return, and electrical/control signals. Selection of the heating section depends on line capacity, product type, target pasteurization temperature, and available utilities. Verification questions include: What is the required throughput? What is the product's viscosity and particulate content? What heating medium is available (hot water or steam)? What are the space and utility constraints? Maintenance signals include temperature deviations, pressure drops, leaks, and unusual noise. Failure boundaries include loss of temperature control, heat exchanger fouling, and seal degradation. Always verify model-specific values and standards with the legal manufacturer or supplier.
The heating section operates by transferring thermal energy to the beverage product. This is typically achieved through indirect heat exchange. The beverage flows through a sanitary tube or plate heat exchanger. A heating medium (such as hot water or steam) circulates on the opposite side of the heat transfer surface, warming the beverage without direct contact. Precise temperature control systems (sensors, controllers, and regulating valves) maintain the target temperature throughout the section to ensure consistent pasteurization efficacy.
