Densely occupied spaces such as classrooms can very often have problems with overheating. It can be difficult to cool such spaces by means of a ventilation system without creating draughts and causing discomfort for occupants. The use of a wall radiant cooling system is a suitable option for spaces with a high occupant density. Radiant systems can remove most sensible heat loads resulting in a relatively small requirement for supply air for ventilation. (C) 2017 Elsevier B.V. All rights reserved.