Analysis of oxygen exchange-limited transport and chemical stresses in perovskite-type hollow fibers

► Sweep-gas operation, high-pressure operation and vacuum operation of hollow fiber membrane module. ► Effects of surface oxygen exchange and bulk oxygen transport on oxygen flux and chemical stresses. ► Closed-form analytical solutions were obtained. ► Cracking of Ba0.5Sr0.5Co0.8Fe0.2O3−δ hollow fiber under vacuum at 1173 K was predicted.