AUTHORS: Carlo Cravero, Davide Marsano
Download as PDF
ABSTRACT: Regenerative heat exchangers used in glass industry are complex system owing to the transient nature of their cycle, as well as to the complexity of the heat exchange phenomena involved: mixed convection during the cold period (air flux) and combined presence of radiation ad forced convection during the hot period (exhaust gases flux). The present work describes a method to simulate the behaviour of such regenerators. The fluid domain is solved as a porous domain with friction and heat transfer effects modelled as source term in the momentum and energy equations respectively. In this work a so called “non-equilibrium thermal model” is developed as an improvement with respect to a previous model based on a volumetric heat transfer in the porous domain calibrated from experimental data. The improved approach models the heat transfer process through the heat transfer coefficient that is more fundamental and does not require experimental data.
KEYWORDS: Glass production plant, energy efficient regenerators, CFD
REFERENCES:
[1] Tata Energy Research Institute. Practical energy audit manual: glass industry, prepared for Indo-German energy efficiency project, August; 1999.
[2] Koshelnik, A.V, Modelling operation of system of recuperative heat exchangers for aero engine with combined use of porosity model and thermo-mechanical model. Glass and Ceramics 2008. 65, 9-10, 301-304
[3] Zarrinehkafsh, M.T.; Sadrameli, S.M, Simulation of fixed bed regenerative heat exchangers for flue gas heat recovery. App Therm Eng 2004 24, 373-382
[4] Y. Reboussin, J.F. Fourmigué, JF Marthy Ph, Citti O., A numerical approach for the study of glass furnace regenerators, App Therm Eng 2005, 25, 2299-2320.
[5] Basso D, Briasco G, Carretta M., Cravero C, Mola A., CFD simulation of regenerative chambers in glass industry to support the design process for thermal efficiency improvement, Int. CAE Conference, Pacengo del Garda (Italy), 27-28 October 2014
[6] Basso D, Cravero C, Reverberi A.P CFD analysys of regenerative chambers for energy efficiency improvement in glass production plants, Fabiano B. Energies 2015, 8, 8945-8961
[7] Sardeshpande V, Anthony R, Gaitonde U.N, Banerjee R. Performance analysis for glass furnace regenerator, App Therm Eng 2011, 88, 4451-4458
[8] Skiepko T, Shah RK. Modeling and effect of leakages on heat transfer performance of fixed matrix regenerators. Int J Heat Mass Transfer 2005, 48, 1608-32
[9] Foumeny EA, Pahlevanzadeh. Performance evaluation of thermal regenerators. Heat Recov Syst CHP 1994; 14 (1):79-84
[10] Yazicizade AY Untersuchung der Warmeubertragung und Druckabfalls in regenerator. Glastechn Ber 1996, 39, 203- 17
[11] Zanoli A, Leahy WD, Vidil R, Lagarenne D. Experimental studies of thermal performance of various cruciform regenerator packing. Glass Technol 1991;32(5):157-62
[12] Tanda G, Abram R, Forced Convection Heat Transfer in Channels with Rib Turbulators Inclined at 45 deg, Journal of Turbomachinery, April 2009, 131, 021012: 1-10
[13] La Pica A, Rodonò G, Volpes R. An experimental investigation on natural convection of air in a vertical channel, Int J Heat Mass Transfer 1993, 36, 611-616
