# Performance Analysis of a Combined Solar-Assisted Heat Pump Heating System in Xi’an, China

> Research article (Energies, 2019) · cited 20× · AI/ML

**Wikidata**: [openalex:W2953720536](https://www.wikidata.org/wiki/openalex:W2953720536)  
**Source**: https://4ort.xyz/entity/performance-analysis-of-a-combined-solar-assisted-heat-pump-heating-system-in-xian-china