Heat Exchangers & UHT Processing – Exam Revision PPT (Food Processing)

This document is a clear, exam-focused PowerPoint covering Flow Dynamics, Tubular Heat Exchangers, and Ultra Heat Treatment (UHT) Processing, designed specifically for Food Processing / Food Engineering students. The content is simplified into easy-to-remember bullet points that are ideal for written exams, last-minute revision, and revision sticks. Topics covered: • Heat transfer flow dynamics in food processing • Parallel flow vs Counter flow (advantages, limitations, exam comparisons) • Temperature profiles and heat recovery concepts • Tubular heat exchangers: • Double pipe (mono-tube) • Tube-in-tube-in-tube • Shell-and-tube (multi-tube) • U-tube heat exchangers • Suitability for high-viscosity fluids • Ultra Heat Treatment (UHT) processing: • Definition and operating conditions (≥135 °C for ~1 s) • Microbial and spore inactivation • Shelf-stable food production • Direct vs Indirect UHT (energy cost & quality differences) • Common UHT-processed foods (milk, cream, soups, baby foods, juices, desserts) Ideal for: • Food Science / Food Technology students • Exam revision and written answers • Understanding thermal processing concepts quickly • Creating short notes, revision sticks, and exam frameworks This resource is concise, structured, and exam-oriented, making it perfect for students who want to save time and score better in food processing exams.