Development of Transient Differential Model of Bell-Delaware Method with A Case Study of Water/TiO2 Nanofluid
Keywords:Bell-Delaware, nanofluid, Python, rigorous model
Heat exchangers are equipments designed for efficient and economic thermal energy transfer betweenchemical process flows, being widely applied in chemical plants, petrochemical, refinery and power plants. This workaims the development of a rigorous transient model for a 1-2 shell-and-tube of heat exchangers with fractionated baffles,implementing Bell-Delaware method to determine the thermal and fluid dynamics parameters like heat transfercoefficients and pressure drop. For this, Bell-Delaware method has been utilized to the shell-side, considering severaltypes of baffle leaks and its configuration, bypass effect in tube bundles, different input and output distances of baffles,laminar flow, temperature gradient and viscosity variation near the tubes walls. Nanofluid physical properties were locallyevaluated by adapted prediction equations available in databases and literature. The case study simulations wereperformed using the Python computer program and its modules, to determine temperature and physical properties andprofiles of TiO2 nanofluid through the tube, considering a one-dimensional variation, and showing the model applicabilityfor dimensioning and analysis of shell-and-tube 1-2 exchangers.
TABOREK. Shell-and-Tube Heat Exchangers. Section 3.3, Heat Exchanger Design Handbook. Hemisphere (1983).
COLBURN AP, DE E, du P. Mean temperature difference and heat transfer coefficient in liquid heat exchangers. Industrial and Engineering Chemistry 1993; 25(8): 873-877. ACS Publications.
SIEDER EN, TATE CE. Heat Transfer and Pressure Drop of Liquids in Tubes. Industrial and Engineering Chemistry 1936; 28: 1429-1433. http://dx.doi.org/10.1021/ie50324a027
TINKER T. Shell side characteristics of shell and tube heat exchangers: a simplified rating system for commercial heat exchanger. J Heat Transfer 195880; p. 36-52: 1958.
BELL KJ. Final Report of the Cooperative Research Program on shell-and-tube heat exchangers. University of Delaware Eng Exp Sta Bulletin 1963; 5.
RIBEIRO CMC. Comparação de Métodos e Cálculo Termo- Hidraúlico para Trocados de Calor Casco e Tubo sem Mudança de Fase. Tese de Mestrado-FEC/UNICAMP 1984.
BELL KJ. Delaware Method for Shell Side Design. Heat Exchanger Thermal-Hydraulic Fundamentals and Design. New York: McGraw-Hill 1980.
KERN DQ. Process Heat Transfer. New York: McGraw-Hill 1950.
Xuan Y, Roetzel W. Conceptions for heat transfer correlation of nanofluids. Int J Heat Mass Trans. 43 2000; 3701-3707. http://dx.doi.org/10.1016/S0017-9310(99)00369-5
Sharma KV, Sarma PK, Azmi WH, Mamat R, Kadirgama K. Correlations to predict friction and forced convection heat transfer coefficients of water based nanofluids for turbulent flow in a tube. Int J Microscale Nanoscale Therm. Fluid Transport Phenom. (Special Issue in Heat and Mass Transfer in Nanofluids) 2012; 3 (4): 1-25.
Azmi WH, Sharma KV, Sarma PK, Mamat R, Anuar S, Dharma Rao V. Experimental determination of turbulent forced convection heat transfer and friction factor with SiO2 nanofluid. Exp Therm Fluid Sci 2013; 51 (0): 103e 111.
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