Thermal stress investigation of glazing unit filled with paraffin in cold regions

Zhou Ying-ming Z. Y., Wu Guo-zhong W. G., Li Dong L. D., ARICI M., Wang Ze-mei W. Z., Fu Shi-bo F. S., ...More

JOURNAL OF CENTRAL SOUTH UNIVERSITY, vol.28, no.11, pp.3599-3612, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 11
  • Publication Date: 2021
  • Doi Number: 10.1007/s11771-021-4878-4
  • Journal Name: JOURNAL OF CENTRAL SOUTH UNIVERSITY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Page Numbers: pp.3599-3612
  • Keywords: glazing unit, paraffin, thermal stress, temperature difference, stress distribution, PHASE-CHANGE MATERIAL, HEAT-TRANSFER, WINDOW GLASS, OPTICAL-PERFORMANCE, PCM, BREAKAGE, ENHANCEMENT, TEMPERATURE, EFFICIENCY, THICKNESS
  • Kocaeli University Affiliated: Yes

Abstract

In this study, based on the established heat transfer and mechanical stress models, thermal stress distribution of glazing unit filled with paraffin was studied for various temperature differences between indoor and outdoor conditions. The strain produced on the surface of glazing unit filled with paraffin varies greatly in the outdoor temperature range of - 30 degrees C-40 degrees C. Furthermore, phase change material (PCM) layer between the glass panes significantly affects the strain values at different temperatures, which can respectively reach up to about 250x10(-6) and down to -300x10(-6) for tensile and compressive strains once the paraffin is in liquid state. Additionally, impacts of boundary conditions on the strain values are more pronounced within the distance of 0.01 m from the edges of the glazing window. The presented model and outcomes can be used as a guide to simulate thermal stress in glazing units filled with paraffin.