The source fallacy
Many studies list waste heat sources but do not identify usable heat sinks. A source without a sink is not a project.
Useful heat depends on temperature, timing, distance, contamination and controls.
Engineering response
Map sinks first, then match sources. When direct matching fails, evaluate storage or heat pump upgrading.
Engineering FAQs
Can low-temperature waste heat be valuable?
Yes, if a nearby low-temperature sink exists or if a heat pump can upgrade it economically.