EXPERIMENTAL AND NUMERICIAL INVESTIGATION OF CEILING MOUNTED RADIANT PANELS HEAT OUTPUT FOR DIFFERENT INLET-OUTET WATER TEMPERATURES
The heat output of ceiling mounted radiant panels with dimensions of 1.5m x 1.9m x 0.052m were investigated for inlet-outlet temperatures of 50/30°C, 60/40°C, 70/50°C, 80/60°C and 90/70°C in a temperature controlled space. The experimental results were compared with results of an accredited laboratory, and a fair agreement was obtained. In addition, computational investigations for the radiant panel with the same dimensions were performed, in a space heated with radiant heater with constant surface temperatures in the range of 40°C – 150°C. It was observed that the numerical results are in agreement with the experimental values. The numerical results showed that, radiation as well as natural convection heat transfer mechanisms occur, and the portion of radiation heat transfer is at a rate of approximately 80%. The heat output increases almost linearly with the increase of temperature.
European Heating Industry. (2013). Heating in the Spotlight.
Imanaria, T., Omoria, T., Bogakib, K. (1999). Thermal comfort and energy consumption of the radiant ceiling panel system: Comparison with the conventional all-air system, Energy and Buildings, Volume 30, number 2, pp. 167-175.
Inam, B. (2006). Research of Using Radiant Heating Systems in Industrial Plant, M.Sc. Thesis, Zonguldak Karaelmas University, Turkey.
Kegel, M. (2006). Experimental and Analytical Analysis of Perimeter Radiant Heating Panels, M.Sc. Thesis, University of Waterloo, Canada.
Zhang, X., Li, N., Su, L., Sun, Y., Qian, J. (2016). Experimental study on the characteristics of non-steady state radiation heat transfer in the room with concrete ceiling radiant cooling panels, Building and Environment, Volume 96, pp. 157-169.
Zhang, Z. (1987). An experimental and theoretical study of a hydronic radiant ceiling panel heating system, Ph.D. Thesis, Iowa State University, USA.
Jeong, J. W., Mumma, S. A. (2003). Ceiling radiant cooling panel capacity enhanced by mixed convection in mechanically ventilated spaces, Applied Thermal Engineering, Volume 23, number 18, pp. 2293-2306.
Nagano, K., Mochida, T. (2004). Experiments on thermal environmental design of ceiling radiant cooling for supine human subjects, Building and Environment, Volume 39, number 3, pp. 267-275.
Fonseca, N. (2011). Experimental study of thermal condition in a room with hydronic cooling radiant surfaces, International Journal of Refrigeration, Volume 34, number 3, pp. 686-695.
Fonseca, N. (2011). Experimental analysis and modelling of hydronic radiant ceiling panels using transient-state analysis, International Journal of Refrigeration, Volume 34, number 4, pp. 958-967.
Lim, J. H., Jo, J. H., Kim, Y. Y., Yeo, M. S., Kim, K. W. (2006). Application of the control methods for radiant floor cooling system in residential buildings, Building and Environment, Volume 41, number 1, pp. 60-73.
Li, R., Yoshidomi, T., Ooka, R., Olesen, B. W. (2015). Field evaluation of performance of radiant heating/cooling panel system, Energy and Buildings, Volume 86, pp. 58-65.
EN 14037-2:2003. (2003). Ceiling mounted radiant panels supplied with water at temperature below 120°C – Part 2: Test methods for thermal output.
Cengel, Y. A., Boles, M. A. (2004). Thermodynamics – An Engineering Approach, fifth ed., McGraw Hill.
Shati, A. K. A., Blakey, S. G., Beck, S. B. M. (2011). The effect of surface roughness and emissivity on radiator output, Energy and Buildings, Volume 43, pp. 400-406.
Prüfstelle – Heizung, Lüftung, Klimatechnik. (2012). Bericht über die Prüfung einer Deckenstrahlplatte nach DIN EN 14037-1, -2, -3. Stuttgart.
Calisir, T., Yazar, H. O., Baskaya, S. (2017). Determination of the effect of different inlet-outlet locations and temperatures on PCCP panel radiator heat transfer and fluid flow characteristics, International Journal of Thermal Sciences, Volume 121, pp. 322-335.
Copyright (c) 2018 Anglo-American Publications LLC
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.