2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157155We have investigated theoretically the influence of an AC drive on heat transport in a hybrid normal metal - superconductor tunnel junction in the photon-assisted tunneling regime. We find that the useful heat flux out from the normal metal is always reduced as compared to its magnitude under the static and quasi-static drive conditions. Our results are useful to predict the operative conditions of AC driven superconducting electron refrigerators.10 pages, 8 colour figures, published versionMesoscale and Nanoscale PhysicsSuperconductivitytext