Flow-through photo-chemical reactor

A flow-through photochemical reactor includes a reactor body, that circumscribes a longitudinally extending channel having a generally annular cross section. This channel accommodates fluids passing between an inner wall of the reactor body and an outer wall of a photon-transmitting tube that is housed internally thereof. In addition, the reactor includes mechanically static, fluid-dynamic elements for passively inducing substantial turbulent flow within a fluid as it passes through the channel. This arrangement substantially increases the uniformity of the fluid's exposure to photons radiating from a source within the tube into the fluid an it is conducted through the channel.