Reports on a study of the dynamic behaviour of radiant floor heating systems and a wall panel heating system. Earlier publications have reported on thermal comfort conditions and energy consumption in test rooms heated by different types of systems. In real life, the conditions are often dynamic due to changing outdoor temperatures, sunshine through windows, heat from lights and occupants, use of night thermostat setback, etc. In the present project, these influences were experimentally studied in a test room that was heated by different systems and where the previously noted dynamic conditions could be simulated. The results showed that both the wall panel heating system and the floor heating systems were able to maintain a comfortable thermal environment under dynamic conditions. The tested systems also had similar energy consumption levels.

KEYWORDS: comparing, experiment, performance, radiant heating, floor heating, walls, panel heating, thermodynamics, outdoor temperature, solar heat gain, incidental heat gain, night setback, thermal comfort, testing, energy consumption.