Enrichment of energy interaction and management in helical tubes configured hydride-hydrogen storage devices: An energy and economic overview

The present research breaks new ground using the R-method to indicate the bettered hydride bed configuration amongst various ones after the combined evaluation of economic, energetic, and static performance factors. The precis is the base reactor adopted from an experimentally reported study, and the various helical configurations are structured and developed for a unified comparison through computational simulations and the R-method determines the best case by assigning equal weightage. The preceding analysis exhibited better ranks for all helically coiled cases than the base case and the reactor with two helical tubes of 6.35 mm diameter emerged as the optimal configuration with a weight ratio of 1.75 and the ability to complete 20 sorption cycles (absorption: 298 K, 0.05 kg/s, 15 bar and desorption: 333 K, 0.05 kg/s, 1 bar) under 578.4 min at $3108.10 to store one kg of hydrogen. For the same operating condition, the optimal case absorbs 0.17 kg of hydrogen under 999 s and desorbs the same in 737 s. Two identical reactors (pitch 27 mm) connected parallel and a reactor with comparable filling capacities were compared. The one with 28.84 kg filling and 1.98 weight ratio achieved 90 % saturation in 314 s, thus performing better.