A system's maximum operable throughput and its maximum useful throughput need not be the same.
The useful threshold depends on the stated application. The book's industrial curves are not whiskey flavor or design data.
Cai distinguishes hydraulic capacity from useful capacity judged through separation performance. Comparisons must identify the endpoint, criterion and test conditions.
Idea
A system's maximum operable throughput and its maximum useful throughput need not be the same.
Reasoning
Cai distinguishes hydraulic capacity from useful capacity judged through separation performance. Comparisons must identify the endpoint, criterion and test conditions.
Boundary
The useful threshold depends on the stated application. The book's industrial curves are not whiskey flavor or design data.
Evidence and connections
Original synthesis from the linked chapter review.
Batch Distillation — Additional Evidence
Strickland (2021), pp. 145–162, extends useful capacity from hydraulic performance to complete production scheduling: utilities, cleaning, staff, cycle duration and recycle storage can constrain output before nominal vessel size does. A volume or still-count ratio alone cannot establish a balanced system.
Maturity remains Developing; this addition records corroboration and boundaries without claiming direct sensory validation.
Full-volume corroboration and limits — 28 September 2026
Chapter 5, PDF255 (printed p.243), shows why throughput and energy need shared denominators: the orthoxylene revamp increases total duty from 4.8 to 5.7 MW while lowering specific energy. Chapter 9 pp.367–401 compares specialized apparatus whose laboratory, total-reflux and scale conditions constrain transfer. Together with the existing Batch Distillation connection, useful capacity must include product criteria, operating range, time, utilities and evidence scale. These examples do not establish whiskey flavor benefits.
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