# Model-free control and staging for real-time energy efficient operation of a variable refrigerant flow system with multiple outdoor units

> Research article (Applied Thermal Engineering, 2020) · cited 13× · AI/ML

**Wikidata**: [openalex:W3046694568](https://www.wikidata.org/wiki/openalex:W3046694568)  
**Source**: https://4ort.xyz/entity/model-free-control-and-staging-for-real-time-energy-efficient-operation-of-a-variable-refrigerant-flow-system-with-multi