Emissivity measurement of black paint using the calorimetric method

• Autorzy: Pelińska-Olko Ewa

Identyfikatory

DOI

10.24425/ather.2023.147542

• Języki publikacji: EN

Abstrakty

EN

The paper is of practical importance and describes the construction of a test rig and the measurement method for determining the relative emissivity coefficient of thermosensitive thin polymer coatings. Polymers are high-molecular chemical compounds that produce chains of repeating elements called ‘mers’. The polymers can be natural and artificial. The former ones form the building material for living organisms, the latter – for plastics. In this work, the words plastics and polymers are used as synonyms. Some plastics are thermosensitive materials with specific physical and chemical properties. The calorimetric method mentioned in the title consists of two steps. The first stage, described here, involves very accurately measuring the emissivity of black paint with the highest possible relative emissivity coefficient, which covers the surface of the heater and the inner surface of the chamber. In the second step, the thermosensitive polymer will be placed on the inner surface of the chamber, while black paint with a known emissivity coefficient will remain on the heater. Such a way of determining the properties of thermosensitive polymers will increase the error of the method itself, but at the same time will avoid melting of the polymer coating. During the tests, the results of which are presented in this work, the emissivity coefficient of the black paint was obtained in the range of 0.958–0.965.

Słowa kluczowe

EN

calorimetric method; emissivity; thermosensitive materials; polymers; plastics

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2023
• Tom: Vol. 44, no 3
• Strony: 161--177
• Opis fizyczny: Bibliogr. 36 poz., rys.

Twórcy

autor

Pelińska-Olko Ewa

• Wrocław University of Science and Technology, Faculty of Mechanical and Power Engineering, Department of Thermodynamics and Renewable Energy Sources, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).