Thermal characteristics of non-edible oils as phase change materials candidate to application of air conditioning chilled water system

• Published in: IOP conference series. Materials Science and Engineering 2015-09, Vol.88 (1), p.12051
• Main Authors: Irsyad, M, Indartono, Y S, Suwono, A, Pasek, A D
• Format: Article
• Language: English
• Subjects: Air conditioning; Chilled water systems; Energy consumption; Freezing; Latent heat; Melt temperature; Melting points; Oils & fats; Phase change materials; Refrigerants; Thermal conductivity
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/88/1/012051

The addition of phase change material in the secondary refrigerant has been able to reduce the energy consumption of air conditioning systems in chilled water system. This material has a high thermal density because its energy is stored as latent heat. Based on material melting and freezing point, there are several non-edible oils that can be studied as a phase change material candidate for the application of chilled water systems. Forests and plantations in Indonesia have great potential to produce non-edible oil derived from the seeds of the plant, such as; Calophyllum inophyllum, Jatropha curcas L, and Hevea braziliensis. Based on the melting temperature, these oils can further studied to be used as material mixing in the secondary refrigerant. Thermal characteristics are obtained from the testing of T-history, Differential Scanning Calorimetric (DSC) and thermal conductivity materials. Test results showed an increase in the value of the latent heat when mixed with water with the addition of surfactant. Thermal characteristics of each material of the test results are shown completely in discussion section of this article.