Feasibility study of simplified pipe modeling for analyzing thermal performances of radiant heating and cooling systems

Energy-efficient radiant heating and cooling require surface temperature thermal capacity analysis. Simplified pipe modeling is applied to save time resources for numerical analysis when evaluating the system. Therefore, this study investigated distribution of a system using simplified modeling. To do this, steady-state heat transfer simulation was performed Physibel BISCO. The difference between detailed (circular) simple (rectangular) models effect material conductivity various layers were analyzed in three types systems: Embedded Surface System (ESS), Thermally Activated Building (TABS), Cooling Radiant Ceiling Panels (CRCP). ESS TABS results showed similar materials. Also, CRCP materials differed capacity, especially high. model overstated which needs resistance solve overestimation. Further studies are necessary investigate discrepancy with different dimensioning operation conditions, such as water flow rate.