Energy Academy
Level 2: System Deep Dives/Pinch Analysis & Process Integration
Level 217 lessons · 171 min

Pinch Analysis & Process Integration

Optimise heat exchange across a whole process at once: composite curves, the pinch point, minimum utility targets, network design and the economics of the approach temperature.

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01Pinch Analysis Fundamentals

  1. 01Why Optimise Heat Exchange Across a Whole Process?From matching one waste-heat source to one load, to matching every hot and cold stream on a site simultaneously — and finding the truly minimum energy bill.9 min
  2. 02Hot & Cold Streams and the Minimum Approach TemperatureClassifying every stream on a site as hot or cold, and the ΔTmin concept that governs how close they can approach each other.10 min
  3. 03Building Composite CurvesCombining many streams into one hot curve and one cold curve — the graphical heart of pinch analysis.11 min
  4. 04Pinch Fundamentals CheckQuiz on streams, approach temperature and composite curves.5 min

02Finding the Pinch — Targeting Minimum Utilities

  1. 01The Problem Table AlgorithmThe temperature-interval cascade that finds the pinch and the minimum hot and cold utility requirements by arithmetic alone.12 min
  2. 02Reading the Pinch: Composite Curves & OverlapInterpreting the graphical picture — where the curves come closest, and why that point sets the whole process's minimum energy target.9 min
  3. 03The Golden Rules: Don't Cross the PinchThe three rules that keep a design at its true minimum utility — and the energy penalty of breaking each one.10 min
  4. 04Targeting CheckQuiz on the problem table algorithm, the pinch point and the golden rules.5 min

03Designing the Heat Exchanger Network

  1. 01Matching Streams at the PinchThe feasibility rule that decides which streams can be matched right at the pinch, and a fully worked network.11 min
  2. 02The Tick-Off Heuristic & Stream SplittingBuilding a workable network match by match, and when a stream must be split to keep every match feasible.10 min
  3. 03Minimum Number of Units & Network SimplificationTargeting the fewest heat exchangers a network needs, and simplifying an over-complicated design by breaking loops.10 min
  4. 04Network Design CheckQuiz on pinch matching, the tick-off heuristic and minimum units.5 min

04Economics & Practical Application

  1. 01Choosing ΔTmin: The Capital-Energy Trade-offWhy the minimum approach temperature is an economic choice, not a fixed constant — balancing utility cost against heat-exchanger capital cost.10 min
  2. 02Threshold Problems: When There's No PinchProcesses that only ever need one utility, and why forcing a two-utility design onto them wastes money.9 min
  3. 03Retrofit Pinch Analysis: Applying It to an Existing SiteUsing targets from a pinch study to find the missed heat-recovery opportunities in a plant that already exists.10 min
  4. 04Economics & Application CheckQuiz on ΔTmin economics, threshold problems and retrofit application.5 min

05Capstone Project

  1. 01Capstone: Pinch Analysis DiagnosticsHands-on: diagnose eight process-integration call-outs — cross-pinch heat transfer, infeasible matches, wrong utility placement, threshold problems and over-complicated networks — then calculate, verify and prescribe the fix.30 min