@inproceedings{c499516e3bc248efb731673b14db9f53,
title = "Low-grade heat utilization through ultrasound-enhanced desorption of activated alumina/water for thermal energy storage",
abstract = "Sorption thermal energy storage (TES) seems to be an auspicious solution to overcome the issues of intermittent energy sources and utilization of low-grade heat. Ultrasoundassisted adsorption/desorption of water vapor on activated alumina is proposed as a means of low-grade heat utilization through TES. The effects of ultrasonic power on the storing stage (desorption of water vapor) were analyzed to optimize the desorption and overall efficiencies. To determine and justify the effectiveness of incorporating ultrasound from an energysavings point of view, an approach of constant total (heat plus ultrasound) input power of 25 W was adopted. To measure the extent of the effectiveness of using ultrasound, ultrasonicpower- to-total power ratios of 0.2 and 0.4 were investigated and the results compared with those of no-ultrasound (heat only) at the same total power. The regeneration temperature and desorption rate were measured simultaneously to investigate the effects of ultrasonication on regeneration temperature and utilization of low-grade heat. The experimental results showed that using ultrasound facilitates the regeneration of activated alumina at both power ratios without increasing the total input power. With regard to regeneration temperature, incorporating ultrasound decreases the regeneration temperature hence justifying the utilization of low-grade heat for thermal energy purposes. In terms of overall energy recovery of the adsorption thermal storage process, a new metric is proposed to justify incorporating ultrasound and any other auxiliary energy along with low-grade heat. ",
keywords = "Activated alumina, Desorption, Low-grade heat., Regeneration, Thermal storage, Ultrasound",
author = "Mobarakeh, {Hooman Daghooghi} and Keshawa Bandara and Liping Wang and Robert Wang and Phelan, {Patrick E.} and Mark Miner",
note = "Funding Information: This material is based upon work supported by the National Science Foundation under Grant Number CBET – 1703670. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.; 2019 Canadian Society for Civil Engineering Annual Conference, CSCE 2019 ; Conference date: 12-06-2019 Through 15-06-2019",
year = "2020",
doi = "10.1115/POWER2020-16802",
language = "English (US)",
series = "American Society of Mechanical Engineers, Power Division (Publication) POWER",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "ASME 2020 Power Conference, POWER 2020, collocated with the 2020 International Conference on Nuclear Engineering",
}