# Heating time and energy
# Scope: Lumped sensible heating; constant net power, losses omitted.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

mass = 1 kg
heatCapacity = 4200 J/(kg*K)
rise = 40 K
power = 500 W

energy := mass*heatCapacity*rise [J]
duration := energy/power [s]

check heating time budget: duration <= 600.0 s

scenario alternative: mass = 0.8 kg