| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 262205 | Energy and Buildings | 2016 | 8 Pages |
•Two different kinds of cooling ceilings with PCM were measured in an office building.•The cooling ceilings differed in the position of the PCM—below and on top of the water pipes.•A passive cooling power of 10–15 W/m2 was measured for operative room temperatures of 26 °C depending on specific heat load.•The passive cooling power of both cooling ceilings was quite similar.•A PCM with a phase change temperature lower than 23 °C could improve the passive cooling power.
In the Energy Efficiency Center—the new R&D building of the ZAE Bayern—two different PCM cooling ceiling types are installed and monitored in two office rooms. The ceilings are connected to a water circuit and can be used for heating and cooling. The PCM ceilings are prototypes which differ in the positioning of the PCM layer: ceiling type 1 with the PCM on top of and ceiling type 2 with the PCM below the water pipes. It was found, that cooling ceiling type 2 had a better thermal connection between PCM and room. Nevertheless, the passive cooling power of the two different system designs was quite similar when measured as a function of the globe temperature. Passive cooling powers of 10–15 W per m2 PCM cooling ceiling area were measured for a globe temperature of 26 °C.
