# Graetz number for heat transfer

> characteristic number for the relation between heat transfer by convection and conduction in a laminar flow in a pipe

**Wikidata**: [Q903886](https://www.wikidata.org/wiki/Q903886)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Graetz_number)  
**Source**: https://4ort.xyz/entity/graetz-number-for-heat-transfer


## References

1. Freebase Data Dumps. 2013
2. ISO 80000-11:2019 Quantities and units — Part 11: Characteristic numbers