Condensation of refrigerant R-404A in a tubular channel

• Autorzy: Bohdal T. , Charun H. , Matysko R.
• Języki publikacji: EN

Abstrakty

EN

Experimental investigations of the process of condensation of refrigerant R404A in a coil tube channel have been carried out. The paper describes the experimental facility and the results of investigations. Experimental values of the mean heat transfer coefficient as well as local heat transfer coefficient in the two-phase zone in a coil tube channel have been obtained and compared with correlations of other authors available in the literature. The experimental data for the local heat transfer coefficient in the condensation zone are found to be in a good agreement with the correlation of Shah.

Słowa kluczowe

EN

condensation; heat transfer; heat transfer coefficient; refrigeration

PL

chłodzenie; kondensacja; przenikanie ciepła; wymiana ciepła

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2006
• Tom: Vol. 27, no. 1
• Strony: 13--29
• Opis fizyczny: Rys., wykr., wz.,Bibliogr. 24 poz.,

Twórcy

autor

Bohdal T.

autor

Charun H.

autor

Matysko R.

• Dr inż. Wyższa Szkoła Inżynierska w Koszalinie - Zakład Termomechaniki i Chłodnictwa,

Bibliografia

• [1] BOHDAL T.: Bubble boiling of environment-friendly refrigeration media, An Intern. J. of Heat and Fluid Flow, 2000, Vol. 21(2000), No. 4, 449-455.
• [2] BOHDAL T.: An investigation of bubbly boiling of environment-friendly refrigerating media, An Intern. J. of Heat Transfer Eng., Vol. 22(2001), N0. 6, 26-39.
• [3] BOHDAL T., ŁOMIAK M.; Energetistic investigations of compressor refrigerating aggregate, Proc. of the Conf. of Intern. Inst. of Refrig. in Paris, COMPRESSORS'2004, Papiernika, Slovak Rep. 2004, 8 pages.
• [4] BOHDAL T., CHARUN H., CZAPP M., MAJKA K.: An investigation of a condensation process e ciency in freon air-cooled condenser coils, Recent Advances in Heat Transfer (B. Sunden and Żukauskas Eds.), Elsevier-Amsterdam 1992, 330-342.
• [5] BOHDAL T., CHARUN H., CZAPP M.: Investigation of heat transfer during condensation of refrigerant R 134a in coil tubes, Proc. X Symp. on Heat and Mass Transfer, Wrocław-Świerardów Zdrój 1998, 117 (in Polish).
• [6] BOHDAL T., CHARUN H., CZAPP M.: Heat transfer during condensation of refrigeration media in air-cooled condensers. Part I. Technika Chłodnicza i Klimatyzacyjna, No. 9, 1999, 352-354 (in Polish).
• [7] BOHDAL T., CHARUN H., CZAPP M.: Heat transfer during condensation of refrigeration media in air cooled condensers. Part II. Technika Chłodnicza i Klimatyzacyjna No. 1, 2000, 5-8 (in Polish).
• [8] BOHDAL T., CHARUN H., CZAPP M.; Refrigeration and compressor steam devices. Theoretical background and calculations, WNT, Warszawa 2003 (in Polish).
• [9] CHAWLA J.M.: Heat transfer of condensation in channel flow, Kältetechnik-Klimatisierung, Vol. 24, 1972, 233 and Chem. Ing. Tech., 43 (1971), No. 14, 838 (in German).
• [10] CHARUN H., Boanm. T., CZAPP M.; Heat and flow characteristics of freon air-cooled condensers, Chłodnictwo, 1993, N0. 2-4 (in Polish).
• [11] CAVALLINI A., DEL COL. D., DORETTI L., LONGO G.A. ROSEFTO L.: Condensation of refrigerants inside plain and enhanced tubes, 3th Europ. Thermal Sci. Conf., Edizioni ETS, Pisa 2000, 51-60.
• [12] DOBSON M.K., CHATO J.C.: Condensation in smooth horizontal tubes, J. Heat Transfer, Vol 120, 1998, 774-755.
• [13] HARAGUCHI H., KOYAMA S., FUJII T.: Condensation of refrigerants HCFC22, HFC134a and HCFC 123 in a horizontal smooth tube, Trans. ISME, Vol. 60, 1994, 245-252.
• [14] JOUNG J.B.: The fundamental equations of gas-droplet multiphase flow, An Intern. J. of Multiphase Flow, Vol. 21, 1995, No. 2, 175-191.
• [15] KRÓLICKI Z.: Throttling process of two-phase refrigerants, Monografie IT-CiMP 20/91, Wyd. Pol. Wrocławskiej, Wrocław 1991.
• [16] LAURENTI L., MARCOTULLIO F., PICCIONI M., ZAZZINI P.: Measurements of the heat transfer in flow boiling and condensation of new refrigerants, Proc. 4th World Conf. on Exp. Heat Transfer, Fluid Mech. and Thermodynamics, Vol. 4, Brussels 1997.
• [17] MIKIELEWICZ J.: Evaluation of heat: transfer coecients for recuperators using the Wilson method, Technika Chłodnicza i Klimatyzacyjna, No. 6, 1995, 215 and Technika Chłodnicza i Klimatyzacyjna, No. 10,2 001, 387 (in Polish)
• [18] ROHSENOW W.M.: Heat transfer and temperature distribution in 1aminar film condensation, Trans. of the ASME, J. of Heat Transfer Vol. 76, 1965, p. 1645.
• [19] SHAH M. M.: A general correlation for heat transfer during film condensation inside pipes, J. of Heat Mass Transfer, Vol. 22, 1979, 547-555.
• [20] SHAO D.W., GRANRYD E.: Experimental and theoretical study on flow condensation with non-azeotropic refrigerating mixtures of R32/R134C, An Intern. J. of Refrig., vol. 21, 1998, No. 3, 230-246.
• [21] TANDON T.N., VARMA H.K., GUPTA C.P.: Generalized correlation for condensation of binary mixtures inside a horizontal tube, An Intern. J. of Refrig. Vol. 9, 1986, No. 5, 134-136.
• [22] TONG L.: Empirical study of new refrigerant flow condensation inside horizontal smooth and micro-fin tubes, Ph.D. Thesis, Univ. of Maryland and College Park, 1997, p. 251.
• [23] TANDON T.N., VARMA H.K., GUPTA C.P.: Generalized correlation for condensation of binary mixtures inside a horizontal tube, Intern. J. Refrig., Vol. 9, 1986, No. 5, 134-136.
• [24] ZHAO CH.: Studies on direct contact condensation heat transfer, Ph.D. Thesis, Univ. of Manchester, Dept. of Eng., 1992, p. 122.