THE INFLUENCE OF WIRE PITCH TO THE WIRE AND TUBE HEAT EXCHANGER EFFICIENCY IN FREE CONVECTION

I Made Arsana, Jurusan Teknik Mesin, Fakultas Teknik, Universitas Negeri Surabaya, Indonesia

 10.21831/jps.v21i2.13005

Abstract


Wire and Tube heat exchanger consists of coiled tube and wire sticked on the two sides of it in normal direction of the tube. The ability of this heat exchanger to dissipate heat is shown by the overall surface effi ciency from array of fi ns or called as heat exchanger effi ciency. The wire which functions as a fi n is the expansion of the outer surface of tube, so that it expands the surface of free convection heat transfer and transfers heat from the heat exchanger to the outside surroundings. The fi n effi ciency commonly depends on its material, geometry and environment where it is used. In this research, the infl uence of the wire pitch to the heat exchanger was examinated. Tthree designs of the heat exchanger with different wire pitch namely (pw/Lw = 0.015; pw/Lw = 0.029 dan pw/Lw = 0.044) were tested into fi ve levels of entrance fl uids temperature (40, 50, 60, 70, and 80 0 C). The fi nding of this study was that the heat exchanger pw/Lw = 0.029 evenly produced the highest effi ciency.


Keywords


heat exchanger effi ciency; pitch of wire; wire and tube heat exchanger; free convection

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References


Bejan, A. (1993). Heat transfer. New York: John Willey & Sons.

Boulahrouz, S., & Haddouche, A. (2014). Finite volume analysis of a wire on tube heat exchanger used for cooling of electronics. International Journal on Heat and Mass Transfer Theory and Application (IREHEAT), 2(1).

Cengel, Y. A. (1998). Heat transfer a practical approach. New York: McGraw-Hill.

Incropera, F. P. (1996). Fundamentals of heat and mass transfer (3 152 ed.). New York: John Wiley & Sons. Rd 2

Kreith, F. (1997). Prinsip-prinsip perpindahan panas. (Terj.: Eko Prijono). Jakarta: Erlangga.

Kumara, P. (2011). Optimization of performance and assesment of material cost of the refrigerator condenser (Master of Science Thesis). KTH School of Industrial Engineering and Management, Stockholm.

Kumra, A. Rawal, N., & Samui, P. (2013). Prediction of heat transfer rate of a wire-on-tube type heat eschanger: An artifi cal intelegence approach. Procedia Engineering, 64, 74-83.

Kundu, B., & Das, P. K. (1999). Performance analysis and optimization of eccentric annular disk fi ns. Journal of Heat Transfer, 121, 419-429. Mendez, R. R., Sen, M., Yang, K. T., &

McClain, R. (1999). Effect of fi n spacing on convection in a plate fi n and tube heat exchanger.

International Journal of Heat and Mass Transfer, 43 (2000), 39-51.

Patil, K. S., Mali, K. V., & Ojha, P. (2012). Simulation of wire and tubhe condenserof domestic refrigerator. International Jornal of Engineering and Sience Research (IJESR), 2(7), 613-620.

Samana, T., Kiatsiriroat, T., & Nuntaphan, A. (2012). air-side performance analysis of a wire-on-tube heat exchanger with an oscillating heat pipe as an extended surface under natural convection conditions. Heat Transfer Engineering, 33(12), 1033-1039.

Srinivasan, V., & Shah, R. K. (1997). Fin effi ciency of extended surfaces in two phase- fl ow. Journal of Heat and Fluid Flow, 18, 419-429.

Tagliafi co, L., & Tanda, G. (1997). Radiation and natural convection heat transfer from wire-and-tube heat exchangers in Pengaruh Jarak Antarkawat (Arsana, I. M.) refrigeration appliances. International Journal of Refrigeration, 20(7), 461469.

Tanda, G., & Tagliafi co, L. (1997). Free convection heat transfer from wire and tube heat exchangers. Journal of Heat Transfer. 119(2), 370-372.




DOI: https://doi.org/10.21831/jps.v21i2.13005

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