HEAT EXCHANGER NETWORK SYNTHESIS

A: Choosing A risks validating thermal performance on a configuration that may already violate the pinch intent due to misrouted lines. Choosing B can force heat across the pinch during warm-up and mask a permanent routing error. Choosing D gives you good data on a fundamentally wrong network topology. Choosing C prevents irreversible heat integration errors before any thermal assumptions are tested.

A: Choosing A assumes linear LMTD behavior and ignores pinch-limited matches. Choosing B confuses energy recovery targets with exchanger sizing drivers. Choosing D exaggerates the penalty and doesn't match typical counter-current exchanger physics. Choosing C reflects the reduced driving force concentration around the pinch where most area accumulates.

A: Choosing A usually shifts totals but doesn't create a structural HEN error. Choosing B introduces minor numerical noise without changing match feasibility. Choosing C is within typical targeting tolerance and rarely changes topology. Choosing D indicates a fundamental violation that invalidates the entire synthesis regardless of numbers.

A: Choosing A hides a physical measurement problem and feeds bad data into the network. Choosing B assumes a failure mode without evidence and can bias heat recovery. Choosing D forces process behavior to match faulty instrumentation. Choosing C checks that the temperature basis for the pinch is even real.