Anna Zastawna-Rumin

This paper presents the results of experimental tests of a wall barrier containing a layer with the addition of phase-change material. The study was performed in a climatic chamber for a light frame wall in two versions: with inner lining made of plaster-cardboard panel and of panel containing PCM. Temperature measurements were made on the surface of panels for non- stationary conditions in a climatic chamber. Research stand was prepared, in which heating of coat layers was effecting from an increase of the room’s air temperature rather than from direct heating of the layers. The influence of the PCM was analyzed for faster and slower pace of air heating.

This paper presents the results of the experimental tests of components containing alternating phase material. The measurements of a light frame wall, in two options: plate with internal drywall filling and plate containing phase variable material, were conducted in a climatic chamber. The temperature and heat flux density distribution on the surface of plates for non-stationary temperature conditions in a climatic chamber were analyzed. The research stand simulated the conditions where the cladding plates were heated with the increase of internal air temperature rather than through direct heating. The main goal of the experiment was to check the utility of the test procedure and the measurement equipment to the planned research of building components containing PCM.

The article presents results of simulation of building assuming presence of phase change material in wall barriers. Obtained results were compared with the ones of a building without phase change material in wall barriers. Object of comparing calculations is a model of a real service building located in Silesia. It has light-frame construction with light covering (external metal sheet, heat-insulation, interior metal sheet). In subsequent examinations, the presence of 1 cm thick PCM board placed under the inner surface of a metal sheet was assumed. Tests were conducted for organic materials that undergo phase transition in different temperatures such as 23°C, 25°C, 27°C or 29°C. Based on results of operative temperature measurements, it is possible to determine PCM influence on the building overheating risk.

The paper presents the results of a computer simulation of a building under the assumption of the presence of a phase change material in wall elements. The influence on the cooling energy requirements and, also, the risk of overheating of the low-energy building (without HVAC systems) have been analyzed. The obtained results were compared with the ones of a low-energy building without a phase change material in walls. The comparison calculations were performed for a model of a service building located in Silesia, which is built according to an energy-efficient standard. It has a light-frame construction with light covering (external panels, heat-insulation, interior plasterboard). In the study, the presence of a 1 cm thick PCM board placed under the inner surface of plasterboard is assumed. Tests were conducted for organic materials that undergo phase transition in different temperatures, such as: 23°C, 25°C and 27°C. Based on the results of operative temperature measurements, it is possible to determine the influence of PCM on the risk of building’s overheating.

The paper presents results of experimental studies on components containing phase change materials. The subject of research was the simultaneous usage of two different PC materials: gypsum-carton boards with paraffin capsules of change temperature 23ºC and a board with a melting temperature of 26ºC. The tests were carried out in a climatic chamber for a light skeleton wall lined with inner facing consisting of a traditional gypsum-carton and a layer of PCM board. Measurements of temperature course were taken as well as heat flux density distribution on the surfaces of the boards for variable conditions in the climatic chamber. The results presented in the article are one of the aspects of widely planned and realized measurements aimed at evaluating and choosing the optimal material solutions, using available phase change materials.