# Recuperators and regenerators: Overview

How a furnace can recycle its own fierce exhaust heat

Source page: https://www.materialinsights.org/energy/e_recuperators/overview/

What this tile covers Using hot exhaust to preheat combustion air in furnaces, kilns and glass melting.

#### Key facts

| **Heat grade** | High (above 650 C) |
|---|---|

#### Included from the reference tables

- Recuperators
- Regenerators and regenerative burners
- Air preheaters (rotary, Ljungström)

#### Also in Heat to heat
[Eco Boiler heat recovery](https://www.materialinsights.org/energy/e_boiler_recovery/)[HX Heat exchangers and pinch integration](https://www.materialinsights.org/energy/e_heat_exchangers/)[WHU Waste heat for drying, water and food](https://www.materialinsights.org/energy/e_waste_heat_uses/)

Explore paths from here
 More on this tile in the tabs above: science and thermodynamics, engineering and integration, economics and contracts, impact and additionality, what to track.

## Other sections

- [Summary](https://www.materialinsights.org/energy/e_recuperators/index.md)
- [Correlation](https://www.materialinsights.org/energy/e_recuperators/correlation/index.md)
- [Science and thermodynamics](https://www.materialinsights.org/energy/e_recuperators/rc-sci/index.md)
- [Engineering and integration](https://www.materialinsights.org/energy/e_recuperators/rc-eng/index.md)
- [Economics and contracts](https://www.materialinsights.org/energy/e_recuperators/rc-econ/index.md)
- [Impact and additionality](https://www.materialinsights.org/energy/e_recuperators/rc-impact/index.md)
- [What to track](https://www.materialinsights.org/energy/e_recuperators/tracking/index.md)
- [Relationships](https://www.materialinsights.org/energy/e_recuperators/links/index.md)