# Heat-exchanger screening
# Scope: Effectiveness method with supplied effectiveness and capacity rates.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

hotCapacity = 100 W/K
coldCapacity = 80 W/K
difference = 50 K
effectiveness = 0.7

heat := effectiveness*min(hotCapacity,coldCapacity)*difference [W]
hotDrop := heat/hotCapacity [K]
coldRise := heat/coldCapacity [K]

check heat transfer target: heat >= 2500 W

scenario alternative: hotCapacity = 80 W/K