Optimizing Energy Efficiency and Sustainability in Winter Climate Control: Innovative Use of Variable Refrigerant Flow (VRF) Systems in University Buildings - Gomez, Yolanda Arroyo; Jose-Alonso, Julio F San; Jose-Gallego, Luis J San; Rey-Hernandez, Javier M; Sanz-Tejedor, Ascension; Rey-Martinez, Francisco J (Applied Sciences-Basel, 2025)