Influence of Microstructure and Heat Transfer Surface on the Thermal Power of Cast Iron Heat Exchangers

• Autorzy: Mróz M. , Orłowicz A. W. , Tupaj M. , Lenik M. , Kawiński M. J. , Kawiński M.

Identyfikatory

DOI

10.24425/afe.2021.138685

• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of calorimetric tests of segment elements of fireplace inserts. The aim of the work was to optimize their thermal power by replacing the previously used gray cast iron with flake graphite with gray iron with vermicular graphite and replacing the existing geometry of the heat transfer surface with a more developed one. It turned out that the thermal power of the test segments made of cast iron with vermicular graphite was higher compared to the segments of the same shape made of gray cast iron with flake graphite. It was found that the use of segments made of vermicular cast iron with a ferritic matrix allowed for an increase in the thermal power value by dozen percent, compared to segments of the same shape made of vermicular cast iron with a pearlitic matrix. The test results showed that the thermal power of the test segments depends on the variant of the development of both the heat receiving surface and the heat giving off surface. The highest value of the thermal power was obtained when ribbing in the form of a lattice was used on both of these surfaces, and the lowest when using flat surfaces.

Słowa kluczowe

EN

vermicular cast iron; heat exchanger; thermal power; calorimetric test

PL

żeliwo wermikularne; wymiennik ciepła; moc cieplna; test kalorymetryczny

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2021
• Tom: Vol. 21, iss. 4
• Strony: 93--96
• Opis fizyczny: Bibliogr.12 poz., fot., rys., tab.

Twórcy

autor

Mróz M.

• Rzeszow University of Technology, Rzeszów, Poland

autor

Orłowicz A. W.

• Rzeszow University of Technology, Rzeszów, Poland

autor

Tupaj M.

• Rzeszow University of Technology, Rzeszów, Poland

autor

Lenik M.

• Rzeszow University of Technology, Rzeszów, Poland

autor

Kawiński M. J.

• Cast Iron Foundry KAWMET, Poland

autor

Kawiński M.

• Cast Iron Foundry KAWMET, Poland

Bibliografia

• [1] Directive (2005/32/EC) EUPS Eco-design.
• [2] European energy policy (2007). Bruksela 10.02.2007, COM 2007.
• [3] Kubica, K. (2010). Conditions for cleaner combustion of solid fuels in domestic thermal energy production installations. Gliwice: Projekt FEWE.
• [4] Research report no. 317OA314 (2014). Built-in fireplace insert for solid fuel. Performance tests. Kraków: Instytut Nafty i Gazu. Zespół Laboratoriów Badawczych Sieci, Instalacji i Urządzeń Gazowych. (in Polish).
• [5] Podrzucki, Cz., Wojtysik A. (1988). Plastic unalloyed cast iron. Kraków: Part II, AGH Kraków. (in Polish).
• [6] Holmgren, D., Dioszegi, A. & Svensson, I.L. (2008). Effect of carbon content and solidification rate on the thermal conductivity of grey cast iron. Tsinghua Science and Technology. 13(2), 170-176.
• [7] Greig, G. (1996). Modern ingot mould production. 33 I.F.C., Paper No. 12, New Delhi.
• [8] Kinal, G. & Paczkowska M. (2002). The comparison of grey cast irons in the aspects of the possibility of their laser heat treatment. Journal of Research and Applications in Agricultural Engineering. 57(1), 7376.
• [9] Dobrzański, L.A. (2000). A lexicon of materials science. Verlag Dashofer, version 1.03.2000.
• [10] Monroe, R.W. & Bates, C.E. (1982). Some thermal and mechanical properties of compacted graphite iron. AFS Trans. 90, 615-619.
• [11] Orłowicz, A.W. (2000). Ultrasonic method in foundry industry. Solidification of Metals and Alloys. 2(45). (In Polish).
• [12] Mróz, M., Orłowicz, A.W., Tupaj, M., Jacek-Burek, M., Radoń, M., Kawiński, M. (2019). Improvement of operating performance of a cast-iron heat exchanger by application of a copper alloy coating. Archives of Foundry Engineering. 19(3), 84-87.

Uwagi

* Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).

* Przy autorze: M.J. Kawiński dodano inicjał drugiego imienia