Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.
APA4ort.xyz Knowledge Graph. (2026). Energy efficiency in a ground source heat pump with variable speed drives. Retrieved May 24, 2026, from https://4ort.xyz/entity/energy-efficiency-in-a-ground-source-heat-pump-with-variable-speed-drives
MLA“Energy efficiency in a ground source heat pump with variable speed drives.” 4ort.xyz Knowledge Graph, 4ort.xyz, 24 May. 2026, https://4ort.xyz/entity/energy-efficiency-in-a-ground-source-heat-pump-with-variable-speed-drives.
BibTeX@misc{4ortxyz_energy-efficiency-in-a-ground-source-heat-pump-with-variable-speed-drives_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Energy efficiency in a ground source heat pump with variable speed drives}}, year = {2026}, url = {https://4ort.xyz/entity/energy-efficiency-in-a-ground-source-heat-pump-with-variable-speed-drives}, note = {Accessed: 2026-05-24}}
LLM promptAccording to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Energy efficiency in a ground source heat pump with variable speed drives — https://4ort.xyz/entity/energy-efficiency-in-a-ground-source-heat-pump-with-variable-speed-drives (retrieved 2026-05-24)
