Jonathan R. Stevens


Presentation: 10:45 a.m.-12:00 p.m., Kennedy Union Ballroom



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Vegetable oil phase change materials (PCMs) have great potential in refrigeration applications in developing countries due to their availability and low toxicity. In this report, jojoba oil (melting point: 11.72°C; latent heat of fusion: 105.5 J/g) was investigated for its viability as a cold storage PCM. Thermal conductivity of the pure jojoba oil was enhanced by doping it with three different carbon nanoparticles: graphene, multi-walled carbon nanotubes, and activated carbon. The thermal conductivity of the pure oil and nanofluids in the solid phase were found using modulated differential scanning calorimetry (MDSC). Adding carbon nanoparticles could increase the thermal conductivity of solid jojoba oil from 0.200 W/(m∙K) to as much as 0.647 W/(m∙K), however overall data trends do not agree with the literature consensus. Possible sources of error include uncertainty in the MDSC process and a poor stability of the nanoparticles in solution. Future work should focus on more precise methods of thermal conductivity at lower temperatures and the use of shape stabilized PCMs.

Publication Date


Project Designation

Independent Research

Primary Advisor

Amy R. Ciric

Primary Advisor's Department

Chemical and Materials Engineering


Stander Symposium project, School of Engineering

United Nations Sustainable Development Goals

Sustainable Cities and Communities; Industry, Innovation, and Infrastructure

Thermal Conductivity Determination of Organic Nanofluids by MDSC