手法を比較

	Pinch Analysis	Peng-Robinson状態方程式
分野	応用物理学	応用物理学
系統	Process / pipeline	Process / pipeline
提唱年	1978	1976
提唱者	Bodo Linnhoff, John Flower	Ding-Yu Peng and David Bernard Robinson
種類	Thermal design and optimization method	Equation of state; thermodynamic property correlation
原典	Linnhoff, B., & Flower, J. R. (1978). Synthesis of heat exchanger networks: I. Systematic generation of energy optimal networks. AIChE Journal, 24(4), 633-642.	Peng, D. Y., & Robinson, D. B. (1976). A new two-constant equation of state. Industrial & Engineering Chemistry Fundamentals, 15(1), 59-64.
別名	heat integration, pinch point method, process integration	PR-EOS, Peng-Robinson model
関連	4	4
概要	Pinch analysis is a systematic method for identifying the minimum energy requirements and optimal heat recovery opportunities in chemical processes. Developed by Bodo Linnhoff and John Flower in 1978, it graphically identifies the 'pinch point'—the most constrained part of the process where heating and cooling demands nearly balance. By targeting these bottlenecks, engineers can design energy-efficient heat exchanger networks and reduce operating costs dramatically.	The Peng-Robinson equation of state is a cubic model that describes the thermodynamic properties of pure fluids and mixtures. Introduced by Ding-Yu Peng and David Bernard Robinson in 1976, it improves upon earlier models (van der Waals, Redlich-Kwong) by better predicting compressibility factors and phase equilibria, especially near the critical point. It is widely used in petroleum engineering, chemical process design, and natural gas calculations.