Polygonal flow reactor for photochemical processes

A photoreactor 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 photoreactor assembly further comprises:

• a light source arrangement comprising a plurality of light sources configured to generate the light source radiation, wherein the reactor wall is configured in a radiation receiving relationship with the plurality of light sources;
• wherein the plurality of light sources comprises solid-state light sources;
• one or more fluid transport channels configured to transport a cooling fluid along the one or more fluid transport channels being in thermal contact with the reactor for cooling of the reactor;
• a cooling system configured to transport a cooling fluid through the one or more fluid transport channels;
• wherein the reactor is a tubular reactor and wherein the reactor wall defines the tubular reactor;
• wherein the tubular reactor is configured in a coiled tubular arrangement, comprising a plurality of windings;
• and
• wherein one or more of the following applies:
• (i) at least part of the reactor wall is configured within at least one of the one or more fluid transport channels, and (ii) at least part of the reactor wall defines at least part of a channel wall of at least one of the one or more fluid transport channels.