Energy · RATIOXA GLOSSARY
Useful heat
Heat actually delivered to the building after conversion losses.
Simple definition
Heat actually delivered to the building after conversion losses.
Why it matters
This term changes how inputs, cash flows or results should be interpreted. RATIOXA keeps it explicit so two options are compared on the same basis.
Worked example
At 90% boiler efficiency, 18,000 kWh useful heat requires 20,000 kWh fuel.