Fig. 1 Key factors in efficient STD systems.

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Presentation transcript:

Fig. 1 Key factors in efficient STD systems. Key factors in efficient STD systems. The governing equation for distillation-based STD, with the SWP as the performance metric. The impact of three important parameters—solar absorptivity (α), thermal efficiency (ηt), and GOR—on SWP is illustrated. The three thick arrows denote three independent steps: (i) conversion of solar energy to thermal energy by solar absorber, (ii) generation of vapor using the thermal energy, and (iii) production of water from vapor through condensation and latent heat recovery. Zhangxin Wang et al. Sci Adv 2019;5:eaax0763 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).