Annual Thermal Performance of the Trombe Wall with Phase Change Heat Storage under Climate Conditions of Uzbekistan

• Published in: Applied solar energy Vol. 58; no. 2; pp. 297 - 305
• Main Authors: Samiev, K. A., Halimov, A. S.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2022; Springer Nature B.V
• Subjects: Carbon dioxide; Carbon dioxide emissions; Climate; Climate change; Climatic conditions; Electrical Machines and Networks; Emissions; Energy Efficient Buildings; Engineering; Heat storage; Heat transfer; Mathematical models; Payback periods; Phase change materials; Power Electronics; Reduction; Residential areas; Residential buildings; Solar energy; Solar heating; Thermal analysis; Thermal energy; Trombe walls; Uzbekistan; phase change materials; solar energy; Trombe wall; dynamic model; thermal accumulation
• ISSN: 0003-701X; 1934-9424
• DOI: 10.3103/S0003701X22020189

—In this study, we have assessed the potential of a passive solar heating system with a Trombe wall integrated with phase change materials (PCMs) under climate conditions of Uzbekistan. The proposed mathematical model of unsteady-state heat transfer of a building with the Trombe wall integrated with PCMs has been verified by experimental data. The annual thermal performance and potential of the passive solar heating system with the PCM-based Trombe wall were assessed based on analysis of three-room residential buildings: a typical building; a building with the Trombe wall; and a building with the Trombe wall integrated with PCM-based heat storage. The results show that the specific annual thermal load for heating a typical three-room building, building with the Trombe wall, and building with the Trombe wall integrated with PCM-based heat storage is 211, 134.3, and 91.8 kWh/m 2 year, respectively. It has been revealed that the integration of the Trombe wall system alone in a building will result in a 36% reduction in the annual thermal load for heating the building in winter, while the use of the Trombe wall system with PCM-based heat storage reduces this value to 56.6%. Therefore, the simple payback period for the passive solar heating system with the Trombe wall with PCM-based heat storage is 12.9 years and annual reduction in CO 2 emissions is 70 kg/m 2 .