Experimental study on enhanced heat transfer using TiO2–ethylene glycol–water nanofluid in a double-pipe heat exchanger. - Song, Jinwei; Li, Long; Xu, Zuo; Jiang, Weixue; Li, Yanjun; Yuan, Qing; Yang, Liu; Li, Shuhong; Jin, Xiansong; Yuan, Jie (Journal of Thermal Analysis & Calorimetry, 2026)