Improvement of Operating Performance of a Cast-Iron Heat Exchanger by Application of a Copper Alloy Coating

• Autorzy: Mróz M. , Orłowicz A. W. , Tupaj M. , Jacek-Burek M. , Radoń M. , Kawiński M.

Identyfikatory

DOI

10.24425/afe.2019.127144

• Języki publikacji: EN

Abstrakty

EN

The paper deals with possibility to improve operating performance of cast-iron heat exchangers by providing them with a copper alloy (CuTi2Cr) with the use of the flame spraying method. A test exchanger was cast of a gray cast iron with vermicular graphite in ferritic-pearlitic matrix obtained in production conditions at KAW-MET Iron Foundry with the wire method used to vermicularize the material. The test samples were two plates cast in sand molds, of which one was given a flame-sprayed CuTi2Cr coat on one side. The operating performance of such model cast-iron heat exchangers, with and without CuTi2Cr coating, was tested on a set-up for determining the heat flow rate (thermal power) transferred by the heat exchanger to environment. The obtained results indicate that the value of the heat flow rate characterizing the CuTi2Cr-coated cast-iron heat exchanger was by 10% higher compared to the flow rate of heat conveyed to environment by the heat exchanger without coating.

Słowa kluczowe

EN

vermicular graphite cast iron; CuTi2Cr coating; heat flow rate; heat exchanger; improvement of performance

PL

żeliwo grafitowe wermikularne; powłoka CuTi2Cr; natężenie przepływu ciepła; wymiennik ciepła; poprawa wydajności

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2019
• Tom: iss. 3
• Strony: 84--87
• Opis fizyczny: Bibliogr. 10 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

Jacek-Burek M.

• Rzeszow University of Technology, Rzeszów, Poland

autor

Radoń M.

• Rzeszow University of Technology, Rzeszów, Poland

autor

Kawiński M.

• Cast Iron Foundry KAWMET, Orły, Poland

Bibliografia

• [1] Kordylewski, W. (2006). Combustion and fuels. Wydawnictwo Politechniki Wrocławskiej, Wrocław (in Polish).
• [2] Kubica, K. Combustion of solid fuels in low-power heating devices. Konferencja Naukowo-Techniczna nt.: Diagnostyka jakości spalania w energetyce, Lublin 1998, 151–158 (in Polish).
• [3] Reymer, B. et al. (1994). Concise Mechanic’s Guide. WNT, Warszawa (in Polish).
• [4] Gawroński, J., Szajnar, J. & Wróbel, P. (2006). The superficial composite layers technology and its example applications. Archiwum Odlewnictwa. 6(19), 103–111 (in Polish).
• [5] Olejnik, E., Szymański, Ł., Tokarski, T. & Tumidajewicz, M. (2018). TiC-Based local composite reinforcement obtained in situ in ductile iron based casting with use of rode preform. Materials Letters. 222, 192–195.
• [6] Fernades, F., Cavaliero, A. & Loureiro A. (2012). Oxidation behavior of Ni-based coatings deposited by PTA on gray cast iron. Surface and Coatings Technology. 207, 196–203.
• [7] Pungaiya, S. & Kailasanathan, C. (2018). A review of surface coating technology to increase the heat treatment. International Journal of Mechanical and Robotics Research. 7(5), September, 458–465.
• [8] Gidt, W.H., Tallerico, L.N., Fuerschbach, P.W. (1989). GTA Welding Efficiency: Calorimetric and Temperature Field Measurements. Welding Journal. January, Res Suppl., 28–32.
• [9] Krzyżanowski, M. (1995). Superficial reinforcement of iron alloys with the use of plasma heating. Wyd. AGH, Kraków (in Polish).
• [10] Orłowicz, A.W., Mróz, M.F., Trytek, A., Tupaj, M., Betlej, J. (2012). Polish Patent No. 211283. Warsaw, Polish Patent Office.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).