The article presents the results of experimental studies of partitions containing phase change ma... more The article presents the results of experimental studies of partitions containing phase change materials. The main objective of the measurements was to determine the actual effectiveness of the used materials and their impact on energy storage capabilities through building partitions. The light partition component containing a finishing layer of organic material undergoing a phase change was the subject of research. The heat flux and temperature distribution on individual component layers were recorded while changing the temperature conditions of the surrounding air. The cycle of temperature changes has been chosen to model the probable conditions inside buildings located on Polish territory. The results made it possible to determine the actual effect of PCM applications in partitions on heat accumulation capacity increase and thermal conditions of the component. The article also addresses the issue of determining the parameters of material for which a very strong dependence of the specific heat and temperature exist. When used in construction materials, phase-variable thermal properties of the materials used must be accurately known, since the system efficiency depends on the thermal properties of materials. The article presents an attempt to determine the properties of the PCM as a function of temperature using the equipment consisting of heat meter, electronic sensors and thermocouples temperature.
Latent heat thermal energy storage (LHTES) using phase change materials (PCM) is one of the most ... more Latent heat thermal energy storage (LHTES) using phase change materials (PCM) is one of the most promising ways for thermal energy storage (TES), especially in lightweight buildings. However, accurate control of the phase transition of PCM is not easy to predict. For example, neglecting the hysteresis or the effect of the speed of phase change processes reduces the accuracy of simulations of TES. In this paper, the authors propose a new software module for EnergyPlus™ that aims to simulate the hysteresis of PCMs during the phase change. The new module is tested by comparing simulation results with experimental tests done in a climatic chamber. A strong consistency between experimental and simulation results was obtained, while a discrepancy error of less than 1% was obtained. Moreover, in real conditions, as a result of quick temperature changes, only a partial phase transformation of the material is often observed. The new model also allows the consideration of the case with partia...
The article presents the results of experimental studies of partitions containing phase change ma... more The article presents the results of experimental studies of partitions containing phase change materials. The main objective of the measurements was to determine the actual effectiveness of the used materials and their impact on energy storage capabilities through building partitions. The light partition component containing a finishing layer of organic material undergoing a phase change was the subject of research. The heat flux and temperature distribution on individual component layers were recorded while changing the temperature conditions of the surrounding air. The cycle of temperature changes has been chosen to model the probable conditions inside buildings located on Polish territory. The results made it possible to determine the actual effect of PCM applications in partitions on heat accumulation capacity increase and thermal conditions of the component. The article also addresses the issue of determining the parameters of material for which a very strong dependence of the specific heat and temperature exist. When used in construction materials, phase-variable thermal properties of the materials used must be accurately known, since the system efficiency depends on the thermal properties of materials. The article presents an attempt to determine the properties of the PCM as a function of temperature using the equipment consisting of heat meter, electronic sensors and thermocouples temperature.
Latent heat thermal energy storage (LHTES) using phase change materials (PCM) is one of the most ... more Latent heat thermal energy storage (LHTES) using phase change materials (PCM) is one of the most promising ways for thermal energy storage (TES), especially in lightweight buildings. However, accurate control of the phase transition of PCM is not easy to predict. For example, neglecting the hysteresis or the effect of the speed of phase change processes reduces the accuracy of simulations of TES. In this paper, the authors propose a new software module for EnergyPlus™ that aims to simulate the hysteresis of PCMs during the phase change. The new module is tested by comparing simulation results with experimental tests done in a climatic chamber. A strong consistency between experimental and simulation results was obtained, while a discrepancy error of less than 1% was obtained. Moreover, in real conditions, as a result of quick temperature changes, only a partial phase transformation of the material is often observed. The new model also allows the consideration of the case with partia...
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