Parallel-flow LMTD

Calculates the log-mean temperature difference for a counterflow heat exchanger.

Calculates heat exchanger duty from U, area, and log-mean temperature difference.

Calculates required heat-transfer area from duty, U, and LMTD.

Calculates log-mean temperature difference from two positive temperature differences.

Calculates effectiveness and heat rate for a parallel-flow heat exchanger from UA and heat capacity rates.

Calculates auxiliary heat exchanger duty from U, heat-transfer area, and LMTD.