Thermal Performance of New Hybrid Solar Energy-phase Change Storage-floor Radiant Heating System

Phase change materials in thermally activated building systems: A comprehensive review

“…Zhang et al 88 experimentally investigated the thermal performance of a radiant floor heating system with ETCs and a DX‐53 PCM storage tank. The test was conducted for two rooms, with and without a heating system.…”

“…Furthermore, a supplementary electric heater with a thermal storage pot was used when the solar heat input is not sufficient. In Reference 88, ETCs working with a 70% propylene glycol mixture charged the PCMs in the storage tank. A backup boiler was again employed in case of insufficient solar energy.…”

Analysis of Thermal Performance and Energy Saving Potential by PCM Radiant Floor Heating System based on Wet Construction Method and Hot Water

“…Studies on thermal energy storage systems that combine phase change materials (PCMs) with building structures have been actively conducted to reduce the heating energy consumption in buildings [1]. In particular, studies have been continuously conducted on PCM radiant floor heating systems, which can decrease heating energy by improving the energy performance of existing radiant floor heating systems [2][3][4][5][6][7][8][9][10][11].…”

“…Zhang, Y. et al analyzed the energy performance of a radiant floor heating system that combined a solar hot-water system with a PCM in an office building, as part of the study by Huang, Kailiang et al [5]. The system reduced heating load and increased the solar energy utilization fraction by approximately 30%, thereby proving that energy consumption was decreased [9]. Plytaria, M. T. et al combined a solar hot-water system with a radiant floor heating system operated by a heat pump and analyzed the decrease in the energy consumption of the heat pump due to the PCM.…”

“…Furthermore, it is impossible to apply the existing systems as they are to buildings that use the wet construction method, including concrete and autoclaved lightweight concrete (ALC), and hot water, such as residential buildings in South Korea. Even though a few previous studies introduced systems that use the wet construction method and hot water, the systems used cooling and heating simultaneously or they did not suggest the optimal hot water temperature [4,5,9,10]. As cold water and hot water are used in one coil, the coil or floor structure can be damaged owing to the repeated contraction and expansion of the coil.…”