The influence of a radiated heat exchanger surface on heat transfer

• Autorzy: Morel S.

Identyfikatory

DOI

10.1515/aoter-2015-0028

• Języki publikacji: EN

Abstrakty

EN

The experiment leads to establish the influence of radiated surface development heat exchangers on the values of heat flux transferred with water flowing through the exchangers and placed in electric furnace chamber. The values of emissivity coefficients are given for the investigated metal and ceramic coatings. Analytical calculations have been made for the effect of the heating medium (flame) – uncoated wall and then heating medium (flame) – coated wall reciprocal emissivity coefficients. Analysis of the values of exchanged heat flux were also realized. Based on the measurement results for the base coating properties, these most suitable for spraying the walls of furnaces and heat exchangers were selected, and determined by the intensification of heat exchange effect. These coatings were used to spray the walls of a laboratory waste-heat boiler, and then measurements of fluxes of heat absorbed by the cooling water flowing through the boiler tubes covered with different type coatings were made. Laboratory tests and calculations were also confirmed by the results of full-scale operation on the metallurgical equipment.

Słowa kluczowe

EN

heat exchanger; reciprocal emissivity coefficient

PL

wymiennik ciepła; współczynnik emisyjności

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2015
• Tom: Vol. 36, no. 3
• Strony: 161--174
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Morel S.

• Czestochowa University of Technology, Industrial Furnaces Department and Environmental Protection, al. Armii Krajowej 19, 42-200 Czestochowa, Poland

Bibliografia

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