Heat transfer through the regular polyhedrons with asymmetric boundary conditions

• Autorzy: Pelińska-Olko E.
• Języki publikacji: EN

Abstrakty

EN

During heat transport through the walls of a hollow sphere, the heat stream can achieve extreme values. The same processes occur in regular polyhedrons. We can calculate the maximum heat transfer rate, the so-called critical heat transfer rate. We must assume here identical conditions of heat exchange on all internal and external walls of a regular polyhedron. The transfer rate of heat penetrating through the regular polyhedron with different heat transfer coefficients on the walls is called the heat transfer rate with asymmetric boundary conditions. We show that the heat transfer rate in this case will grow up if we replace those coefficients with their average values.

Słowa kluczowe

EN

assymmetric boundary condition; heat transfer rate; regular polyhedron

PL

warunek brzegowy; wielościan foremny; wskaźnik ciepła

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2012
• Tom: Vol. 33, no. 3
• Strony: 123--131
• Opis fizyczny: Bibliogr. 5 poz.,

Twórcy

autor

Pelińska-Olko E.

• Technical University of Wroclaw, Department of Heat Engineering, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland,

Bibliografia

• [1] HOBLER T.: Fluid motion and heat exchangers. WNT, Warsaw 1980 (in Polish).
• [2] HUANN-MING CHOU, KING-LEUNG WONG: Heat transfer characteristics of an insulated cubic box by using a solid wedge thermal resistance model. Energy Conversion and Managament 44(2003), 1983-1997.
• [3] CHOU H.M.: Optimum interior area thermal resistance model to analyze the heat transfer characteristics of an insulated pipe with arbitrary shape. Energy Conversion and Management 40(2003), 2915-2939.
• [4] PELIŃSKA-OLKO E., SZARYNGER J.: The impact of pipes and solids geometry on occurrence the critical heat streams. Systems 9(2004), spec, iss.2/2, s. 579-588.
• [5] FICHTENHOLZ G.M.: Differential and integral calculus. PWN, Warsaw 1966 (in Polish).