Investigation of the effect of diamond powder on the thermal properties of octadecane using differential scanning calorimetry

• Autorzy: Godlewski Wojciech , Sierakowski Mateusz , Domański Roman , Kapuściński Jakub

Identyfikatory

DOI

10.2478/kones-2019-0055

• Języki publikacji: EN

Abstrakty

EN

The purpose of this work was to examine the effect of diamond powder on the thermal properties of phase change materials on the example of octadecane. The experiment involved mixing of diamond powder with a specific granulation with the aforementioned representative of the alkanes group. Two different grain sizes were used: 50 and 250 micrometres. The change of specific heat, latent heat of phase change and degree of supercoiling in newly formed mixtures was compared to the pure forms of the phase-change materials used. Initial mixing with a glass-stirring rod showed strong stratification for each granulation due to the low viscosity of the mixture and too large differences between component densities. It was decided to add amorphous silicon dioxide to the mixtures, which increases density of the mixture. The optimal percentage of amorphous silicon dioxide was estimated experimentally. Measurements of thermal parameters were carried out using DSC technology. The results of the tests of specific heat and latent phase transition heat showed that with the increasing content of diamond, the specific heat of the mixture decreases almost twice, and the latent heat can decrease by up to three times. The effect of diamond powder on reducing the degree of supercoiling of the mixture was also observed. An important observation was that the mixture with higher granulation of diamond powder had greater tendency for sedimentation. This method could be used to increase thermal conductivity and diffusivity of phase change materials and make them viable for use in systems that require cooling at high rate or temperature stabilization, such as control systems in electronic vehicles or aviation industry and at the same time decrease the degree of supercoiling which could increase the efficiency of system.

Słowa kluczowe

EN

phase change materials; PCM; diamond powder; thermal conductivity; thermal diffusivity

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2019
• Tom: Vol. 26, No. 3
• Strony: 39--45
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Godlewski Wojciech

• Łukasiewicz Research Network − Institute of Aviation Krakowska Av. 110/114, 02-256 Warsaw

autor

Sierakowski Mateusz

• Łukasiewicz Research Network − Institute of Aviation Krakowska Av. 110/114, 02-256 Warsaw

autor

Domański Roman

• Łukasiewicz Research Network − Institute of Aviation Krakowska Av. 110/114, 02-256 Warsaw

autor

Kapuściński Jakub

• Łukasiewicz Research Network − Institute of Aviation Krakowska Av. 110/114, 02-256 Warsaw

Bibliografia

• [1] Domański, R., Magazynowanie energii cieplnej, PWN, Warszawa 1990.
• [2] Mehling, H., Cabeza, L. F., Heat and cold storage with PCM. An up to date introduction into basics and applications, Heidelberg: Springer Berlin Heidelberg, Berlin 2008.
• [3] Nagano, K., Mochida, T., Takeda, S., Domański, R., Rebow, M., Thermal characteristics of manganese (II) nitrate hexahydrate as a phase change material for cooling systems, Applied Thermal Engineering, Vol. 23(2), pp. 229-241, 2003.
• [4] Sharma, A., Tyagi, V. V., Chen, C. R., Buddhi, D., Review on thermal energy storage with phase change materials and applications – Renewable and Sustainable Energy Reviews, Renewable and Sustainable Energy Reviews, 2/2009, Vol. 13(2), pp. 318-345, 2009.
• [5] Domański, R., Jaworski, M., Wiśniewski, T. S., Wymiana ciepła. Laboratorium dydaktyczne, Oficyna Wydaw. Politechniki Warszawskiej, Warszawa 2002.
• [7] Castello, C., Guunther, E., Mehling, H., Hiebler, S., Cabeza, L. F., Determination of the enthalpy of PCM as a function of temperature using a heat-flux DSC – A study of different measurement procedures and their accuracy, International Journal of Energy Research, Vol. 32(13), pp. 1258-1265, 2008.
• [8] Jaworski, M., Pomiary temperatury przemiany fazowej i stopnia przechłodzenia materiałów stosowanych do akumulacji ciepła (PCM), Oficyna Wydaw. Politechniki Warszawskiej, Warszawa 2001.
• [9] Safaria, A., Saidurb, Sulaimanb, R., Xu, Y., Donga, J., A review on supercoiling of Phase Change Materials in thermal energy storage systems, 2017. 45

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).