| Title |
An Evaluation of Energy Performance of Radiant Floor Cooling and Heating Systems |
| Authors |
Leigh Seung-Bok ; Won Jong-Seo |
| Keywords |
Radiant floor cooling ; heating system ; Energy cost ; Solar/geothermal energy |
| Abstract |
The purpose of this study was to evaluate the indoor environmental conditions for comfort and energy performance of radiant floor cooling?heating system integrated with controlled ventilation compared to a conventional solution with packaged air-conditioning?boiler. The alternatives of 5 system types were investigated through TRNSYS simulation for 2 heating alternatives: 1) ALT-1(radiant heating with boiler) and 2) ALT-2(radiant heating with solar collector), and 3 cooling alternatives: 3) ALT-3(packaged air- conditioning), 4) ALT-4(radiant cooling with chiller), 5) ALT-5(radiant cooling with geothermal energy). Based on simulation results, it was confirmed that all alternative systems could provide heating and cooling for occupants comfort. In terms of energy performance, ALT-2 is superior than ALT-1, and ALT-4, ALT-5 demonstrated better performance than ALT-3. From the combined heating and cooling cost point of view, the radiant floor cooling and heating system(boiler+chiller) could reduce the energy cost by 58.8% of the cost by boiler and PAC and it could further reduce by 86.8% when the solar and geothermal energy was used as heat sources. |