Advanced design methodology and modelling of a finned metal hydride reactor using multi-objective Jaya algorithm and desirability approach

This paper outlines an advanced design strategy premised on alloy weight ratio, hydrogen storage rate, and heat extraction rate, overcoming existing technical inadequacies for effectively developing and comparing metal hydride hydrogen storage reactors. The precis is an optimization of a shell and tube reactor encompassing transverse heat fins with 15 kg metal hydride based on fin height, fin pitch, fin-to-fin distance, and tube diameter using the MO-Jaya algorithm and a multi-response desirability approach. The MO-Jaya algorithm was observed to predict better and more reliable design variables than the desirability method, with an average percentage deviation of output responses of less than 7.52 %. The alloy weight ratio, specific charging rate, and specific output energy rate of the thermal model are 0.58, 1.05 stL/kg s, and 1323.35 W/kg, respectively, 0.87, 10.8, and 10.9 % less than the predicted responses. This simple and innovative reactor charges hydrogen at a faster rate than other storage tanks with the same alloy weight ratio. This article also chronicles a comparative study on the effects of transverse and longitudinal heat fins for identical fin volume on the heat extraction rate.