FACTORS AFFECT THE PERFORMANCE OF RADIANT SYSTEM | ||
| AL-TAQANI | ||
| Article 1, Volume 29, Issue 1, June 2016, Pages 0-0 | ||
| Author | ||
| Abdul Amir Abdul Zahra | ||
| Abstract | ||
| In radiant cooling system, all the sensible cooling in the space is provided by cooled metal panels or concrete slabs. These panels cool the room surfaces and occupants by absorbing radiant heat. Radiant cooling systems may be delivered in three ways: ceiling-mounted suspended metal panels, lay-in panels in T-bar ceilings, or tubing embedded in concrete ceilings. Panel systems- either suspended type or T-bar lay-in type are made of steel or aluminum with copper tubing mounted on the backside. The other option is embedded plastic tubing (covered with Plaster) in exposed structural slabs. The purpose of this study is to investigate the efficiency, radiant plate thickness and pipe spacing on the radiant plate of different types of plate material (Aluminum, steel and Plaster) of radiant ceiling system. Based on the thermodynamic principles, the analysis model of radiant plate is established. The efficiency of radiant plate can be simulated and calculated by the model. Under the different type of radiant plate material (thermal conductivity), thickness of plate and pipe spacing, the efficiency of radiant ceiling and the surface temperature distribution on radiant plate are compared and analyzed. The conclusions show that radiant plate thickness, thermal conductivity of the plate material and pipe spacing have primary influence on the surface temperature distribution and the efficiency of radiant plate, and the Aluminum plate is the best material used in radiant cooling system because of its high thermal conductivity. | ||
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