# Ventilation heat-recovery estimate
# Scope: Sensible effectiveness model at supplied air capacity rate.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

capacityRate = 100 W/K
difference = 20 K
effectiveness = 0.75

recovered := capacityRate*difference*effectiveness [W]
residual := capacityRate*difference-recovered [W]

check recovery target: recovered >= 1000 W

scenario alternative: capacityRate = 80 W/K