Determination of thermal diffusivity for rigid body at non-stationary thermal conditions

International Scientific and Practical Conference: Water Power Energy Forum 2018

Karpov, Denis^1 ; Agafonov, Vladimir^2 ; Pisarenko, Viktor^3 ; Berezin, Pavel^4 ; Derevianko, Oleg^5 ; Makoev, Sultan^5 ; Egororov, Mikle^5

Vologda State University, Lenina Street 15, Vologda

160000, Russia^1

JSC Gazprom Gazoraspredelenie Krasnodar, Stroiteley Street 23, Krasnodar

350051, Russia^2

LLC Gas-transport Communication and Facilities, Bolshaya Posadskaya Street 9/5, Saint Petersburg

197046, Russia^3

LLC Northern Alliance, Vetoshkina Street 40, Vologda

160011, Russia^4

Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya Street 29, Saint Petersburg

195251, Russia^5

关键词: Contact less;    Differential heat;    Infrared radiation sources;    Non-stationary temperature fields;    Nonstationary;    Rigid body;    Thermal condition;    Thermal elements;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/288/1/012097/pdf
DOI  :  10.1088/1755-1315/288/1/012097

来源: IOP

【 摘 要 】

In this paper we present a new method for calculation of the thermal diffusivity of a rigid body. This method is based on contactless thermal treatment of the examined construction material by an infrared radiation source. Further we analytically find one-dimensional non-stationary temperature field of a rigid body during its heating using data from thermal elements. The calculation of the thermal diffusivity of a rigid body is made using differential heat equation.