You are using an outdated browser. Please upgrade your browser to improve your experience.
Javascript is disabled in your web browser. For full functionality of this site it is necessary to enable JavaScript.
This website is using cookies.
We use them to give you the best experience. If you continue using our website, we'll assume that you are happy to receive all cookies on this website.
CPOTE2022 logo
7th International Conference on
Contemporary Problems of Thermal Engineering
Hybrid event, Warsaw | 20-23 September 2022

Abstract CPOTE2022-1040-A

Book of abstracts draft
slider slider slider slider slider slider

Experimental study of the behavior of PCM and heavy building envelope structures during summer

Tadeusz KUCZYŃSKI, University of Zielona Gora, Poland
Anna STASZCZUK, University of Zielona Gora, Poland
Natalia RZESZOWSKA, University of Zielona Gora, Poland

The main objective of the study was to evaluate the effects of PCM and traditional masonry wall and RC roof construction of a residential building on the summer thermal performance of the building. Three rooms on the top floor of the experimental building had identical flooring. The internal roof and wall surfaces of the 2 rooms were made as a light wooden frame construction. In one of them PCM on internal walls was covered by plasterboards from inside. In the third room a construction typical for residential buildings, masonry walls and a reinforced concrete roof was used. During the study, which was conducted from 15.06 to 15.09.2021, the course of air temperatures was recorded in three identical rooms with a large south-facing window with a ratio of 0.25 to the floor area. For the night period, mechanical ventilation with a capacity of 6 ACH was turned on in all rooms. Except for a few days when there was a sharp drop in outdoor temperature, the lowest maximum daytime temperature values were maintained in the room with massive walls and roofs, they were slightly higher in the room with PCM, and remained the highest in the room with light frame construction. During the heat wave build-up period, the greatest reduction in maximum daytime temperature of 3.5 K relative to the light room was obtained in the heavy room. In the PCM room, the difference was 2.2 K. While the applied PCM with a melting point of 24-26 C remained effective when the minimum night time indoor temperature dropped to at least 25-26 C, increasing the thermal mass of the walls and roof by using traditional heavy building materials was effective regardless of temperature. When lightweight construction was used, there were large diurnal temperature variations of up to 9 K. In the other two cases, the variations were much smaller.

Keywords: Phase change material, Thermal performance, Energy storage, Buildings, Heat wave