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A ventilated cooling ceiling with integrated latent heat storage: test room measurements
A ventilated cooling ceiling with phase change material (PCM) was installed and measured in a 20 m2 test room. The PCM used was DELTA®-COOL 24, a salt hydrate from the company Dörken with a melting range of 22–28°C. The PCM was encapsulated in polycarbonate containers which were laid on top of the bearing for the plaster boards. The amount of PCM installed was 9 kg/m2. The ceiling was rear ventilated to improve heat transfer between the PCM and the room air. During the cooling mode, the ventilation was purely in circulating operation with a volume flow rate of 97 m3/h (air exchange rate of 2/h). To regenerate the PCM, cooled air was inserted into the ceiling with a volume flow rate of 140 m3/h (air exchange rate of 3/h). Different positions for the containers were tested. The PCM in the ceiling delayed the rise in the room air temperature significantly. The PCM stayed active for 12–16 h, depending on the position of the containers. While the cooling power of the air flow alone was very small (30–40 W for the 20 m2 test room), a significant amount of heat was transferred directly through the plaster boards of the ceiling.
A ventilated cooling ceiling with integrated latent heat storage: test room measurements
A ventilated cooling ceiling with phase change material (PCM) was installed and measured in a 20 m2 test room. The PCM used was DELTA®-COOL 24, a salt hydrate from the company Dörken with a melting range of 22–28°C. The PCM was encapsulated in polycarbonate containers which were laid on top of the bearing for the plaster boards. The amount of PCM installed was 9 kg/m2. The ceiling was rear ventilated to improve heat transfer between the PCM and the room air. During the cooling mode, the ventilation was purely in circulating operation with a volume flow rate of 97 m3/h (air exchange rate of 2/h). To regenerate the PCM, cooled air was inserted into the ceiling with a volume flow rate of 140 m3/h (air exchange rate of 3/h). Different positions for the containers were tested. The PCM in the ceiling delayed the rise in the room air temperature significantly. The PCM stayed active for 12–16 h, depending on the position of the containers. While the cooling power of the air flow alone was very small (30–40 W for the 20 m2 test room), a significant amount of heat was transferred directly through the plaster boards of the ceiling.
A ventilated cooling ceiling with integrated latent heat storage: test room measurements
Weinläder, H. (author) / Kranl, D. (author) / Strieder, B. (author)
Intelligent Buildings International ; 5 ; 120-132
2013-04-01
13 pages
Article (Journal)
Electronic Resource
English
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