Thermal Analysis of the Combustion Chamber of an Industrial Hot Water Spray Washing Machine
International Journal of Energy and Power Engineering
Volume 3, Issue 6, December 2014, Pages: 323-330
Received: Dec. 17, 2014;
Accepted: Dec. 30, 2014;
Published: Jan. 20, 2015
Views 2733 Downloads 151
Ashimedua Ogochukwu Godwin, Mechanical Engineering Technology Dept., Delta State Polytechnic, Ogwashi-Uku, Nigeria
Enibe Samuel Ogbonna, Mechanical Engineering Dept., University of Nigeria, Nsukka, Nigeria
Kebodi Chiedu Lawrence, Mechanical Engineering Technology Dept., Delta State Polytechnic, Ogwashi-Uku, Nigeria
The thermal analysis of an industrial hot water spray washing machine using hot air from the combustion of diesel fuel to heat up water that flows through a spirally coiled steel tube heat exchanger inside a steel shell combustion chamber was analyzed. The working fluids used are water and air. The spirally coiled tube is made by bending a 15mm diameter and 3 mm thick straight pipe into 4 turns and 9 layers respectively. The total length of the tube is approximately 20m. Water at ambient temperature flows into the coil through the outermost turn and flows out through the innermost turn. The adiabatic flame temperature of the fuel was determined. The in-tube and the outside convective heat transfer coefficients were determined using the appropriate correlations available in literature. A mathematical model of the heat transferred to the water was formulated and solved using the Engineering Equation Solver (EES). The results obtained are in reasonable agreement with measured data. Parametric study was done to determine the effects of each parameter on the outlet water temperature.
Ashimedua Ogochukwu Godwin,
Enibe Samuel Ogbonna,
Kebodi Chiedu Lawrence,
Thermal Analysis of the Combustion Chamber of an Industrial Hot Water Spray Washing Machine, International Journal of Energy and Power Engineering.
Vol. 3, No. 6,
2014, pp. 323-330.
Naphon, P. and Wongwises, S.,A review of flow and heat transfer characteristics in curved tubes, Renewable and Sustainable Energy Reviews, 10: 463 – 490, 2006.
Naphon, P. and Wongwises, S., Heat transfer coefficients under dry- and wet-surface conditions for a spirally coiled finned tube heat exchanger, Fluid Mechanics, Thermal Eng and Multiphase Flow Research Lab. (FUTURE), 2004.
Naphon, P. and Wongwises, S., Astudy of the heat transfer characteristics of a compact spiral coil heat exchanger under wet-surface conditions, Experimental Thermal and Fluid Science, 29: 511 – 521, 2005.
Naphon, P. and Wongwises, S., Heat transfer characteristics and performance of a spirally coiled heat exchanger under sensible cooling conditions, JSME International Journal, 48(4): 810 – 819, 2005.
Yoo G., Choi H., and Dong W., Fluid flow and heat transfer characteristics of spiral coiled tube: effects of Reynolds number and curvature ratio, J. Central South University, 19: 471 – 476, 2012.
Kondhalkar, G. E. and Kapatkat, V. N., Performance analysis of spiral tube heat exchanger used in oil extraction system, International Journal of Modern Engineering(IJMER), 2: 930 – 936, 2012.
Holman, J. P., Heat Transfer (Ninth edition), USA: McGraw-Hill Publishing Company Limited, 2002.
Eastop, D. T. andMcConkey, A.,Applied thermodynamics for engineering technologists (Fifth Ed.), England: Pearson Education Limited, 1993.
Ebadian, A.M and Lin,R.C.,Developing turbulent convective heat transfer in helical pipes, Int. J. Heat Mass Transfer 40: 3861–3873, 1997.
Griffith J.F. and Barnard J.A.,Flame and combustion (Third Ed.). Glasgow: Blackie A and P, 1995.
Ho, J.C. andWijeysundera, N.E.,An unmixed-air flow model of a spiral cooling dehumidifying heat transfer, Appl. Therm. Eng. 19: 865–883,1999.
Ho, J.C. andWijeysundera, N.E.,Study of a compact spiral-coil cooling and dehumidifying heat exchanger unit, Appl. Therm. Eng. 16:777–790, 1996.
Kou, K.K.,Principle of combustion. U.S.A: John Wiley & Sons, 1986.
Laing, S.Y., Liu, M., Nathan, G.K., and T.N. Wong., Analytical study of evaporator coil in humid environment, Appl. Therm. Eng. 19: 1129–1145, 1999.
Lemenand, T. and Peerhossaini,H., A thermal model for prediction of the Nusselt number in a pipe with chaotic flow, Appl. Therm. Eng. 22: 1717–1730, 2002.
Lin, C.X. and Zheng, B.,Combined laminar forced convection and thermal radiation in helical pipe, Int. J. Heat Mass Transfer 43: 1067–1078, 2000.
Naphon, P. andWongwises S., An experimental study on the in-tube heat convective heat transfer coefficients in a spiral-coil heat exchanger, Int. Comm. Heat Mass Transfer 29: 797–809, 2002.
Naphon, P. andWongwises S., Experimental and theoretical investigation of the heat transfer characteristics and performance of a spiral-coil heat exchanger under dry-surface conditions, 2nd International Conference on Heat Transfer, Fluid Mechanics, and Thermodynamics, 24–26 June, 2003, Victoria Falls, Zambia.
Naphon, P. andWongwises, S., A study of the heat transfer characteristics of a compact spiral coil heat exchanger under wet-surface conditions, Experimental Thermal and Fluid Science 29: 511 – 521, 2005.
Naphon, P. andWongwises, S., Heat transfer characteristics and performance of a spirally coiled heat exchanger under sensible cooling conditions, Japanese Society of Mechanical Engineers Int. J. SeriesB, 48: 810 – 818, 2005.
Prabhanjan, D. G., Raghavan, G. S. V. and Rennie, J. T., Comparison of heat transfer rates between a straight tube heat exchanger and a helically coiled heat exchanger, Int. Comm. Heat Mass Transfer 29: 185–191, 2002.
Rajput, R. K.,Heat and mass transfer (Third Ed.), India: RajendraRavindra Printers, 2007.
Rajput, R. K.,Fluid mechanics and hydraulic machines. (Sixth Ed.), India: RajendraRavindra Printers, 2008.
Rindt, C.C.M., Sillekens, J.J.M., and Van Steenhoven, A.A., Developing mixed convection in a coiled heat exchanger, Int. J. Heat Mass Transfer 41: 61–72, 1998.
Rindt, C.C.M., Sillekens, J.J.M., and Van Steenhoven, A.A., The influence of the wall temperature on the development of heat transfer and secondary flow in a coiled heat exchanger, Int. Comm. Heat Mass Transfer 26 (1999) 187–198.
Rogers, G. and Mayhew, Y.,Thermodynamic and transport properties of fluids (Second Ed.). Oxford: Basil Blackwell, 1972.
Rogers, G. and Mayhew, Y.,Engineering thermodynamics: work and heat transfer (Fourth Ed.), India: Addison Wesley Longman (Singapore) Pte Ltd, 2001.
Sieder, E. N. and Tate C. E.,Heat Transfer and Pressure Drop of Liquids in Tubes, Ind. Eng. Chem., vol. 28, p. 1429, 1936.
Strehlo, R.A.,Combustion fundamentals, Singapore:McGraw – Hill, 1984.
Acharya, N. and Sen, M., Analysis of heat transfer enhancement in coiled-tube heat exchangers, Int. J. Heat Mas Transfer 44: 3189–3199, 2001.Bejan, A., Heat Transfer, USA: John Wiley and Sons, 1993.
Boles, A.M. and Cengel A.Y.,Thermodynamics: an engineering approach (Third Ed.), U.S.A: McGraw – Hill, 1998.
Bolinder, C.J. and Sunden, B., Numerical prediction of laminar flow and forced convective heat transfer in a helical square duct with finite pitch, Int. J. Heat Mass Transfer 39: 3101–3115, 1996.
Cengel, Y. A.,Heat transfer: a practical approach (International Ed.), U.S.A: McGraw – Hill, 1998.
Chandratilleke, T.T., Ho, J.C., Rajasekar S.,Wijeysundera, N.E., Performance of a compact spiral coil heat exchanger, Heat Recovery Syst. & CHP 15: 457–468, 1995.
Christensen, N.R., Garimella, S. and Richards, D.E., Experimental investigation of heat transfer in coiled annular ducts, J Heat Transfer 110: 329 – 336, 1988.
Douglas, F. J., Gasiorek, M. J and Swaffield, A. J., Fluid mechanics (Fourth Ed.), India: Pearson Education (Singapore) Pte Ltd, 2002.