Cooling of tube containing reactants

Abstract

The invention provides a reactor assembly () comprising a reactor (), wherein the reactor () is configured for hosting a fluid () to be treated with light source radiation () selected from one or more of UV radiation, visible radiation, and IR radiation, wherein the reactor () comprises a reactor wall () which is transmissive for the light source radiation (), wherein: the reactor () is a tubular reactor (), and wherein the reactor wall () defines the tubular reactor (); the tubular reactor () is configured in a tubular arrangement (); the reactor assembly () further comprises a reactor support element (), wherein the reactor support element () comprises a track (), wherein the track () partly encloses the tubular reactor (), wherein the reactor support element () comprises a thermally conductive element (), and wherein the tubular reactor () is configured in thermal contact with the thermally conductive element ().