EFFECT OF CUT TWISTED TAPE AND AL2O3 NANO FLUID ON HEAT TRANSFER OF DOUBLE TUBE HEAT EXCHANGER

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KHANJANI SAMIRA; TAVAKOLI AKRAM; JALALI VAHID DAVOOD; NAZARI MEYSAM

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Journal: Modares Mechanical Engineering Year:2016 | Volume:15 | Issue:11 Page(s): 181-190

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Information Journal Paper

Title

EFFECT OF CUT TWISTED TAPE AND AL2O3 NANO FLUID ON HEAT TRANSFER OF DOUBLE TUBE HEAT EXCHANGER

Author(s)

KHANJANI SAMIRA | TAVAKOLI AKRAM | JALALI VAHID DAVOOD | NAZARI MEYSAM | Issue Writer Certificate

Keywords

NANO FLUIDQ1

DOUBLE PIPE HEAT EXCHANGERQ2

CUT TWISTED TAPEQ2

CONVECTIVE HEAT TRANSFERQ2

Abstract

In this study, forced CONVECTIVE HEAT TRANSFER characteristics of Al2O3/water NANO FLUID flowing through a DOUBLE PIPE HEAT EXCHANGER with plain twisted tape and CUT TWISTED TAPE inserts are investigated experimentally to reveal the effect of CUT TWISTED TAPE and NANO FLUID concentration on heat transfer. Experiments are conducted in a turbulent flow regime with Re number ranging from 4000-34000 and in the particle volume concentration range of 0<j<0.1%. The results of thermal studies showed enhancement of CONVECTIVE HEAT TRANSFER with Al2O3 NANO FLUIDs compared with flow of water. Also, it was found that in higher Reynolds numbers the NANO FLUID has better heat transfer capability. The effects of twisted tape with and without cuts on edges on heat transfer coefficient and rate were investigated. It was found that the twisted tape with cut edges could enhance heat transfer rate better than twisted tape without cut edges. The pressure drop was investigated for flow of NANO FLUID and water. The results showed that there is a there is little difference between pressure drops in these cases. Friction factor and pressure drop in tube with plain twisted tape and CUT TWISTED TAPE inserts are increased due to increasing flow resistance and contact surface between fluid and flow passage.

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APA: Copy

KHANJANI, SAMIRA, TAVAKOLI, AKRAM, JALALI VAHID, DAVOOD, & NAZARI, MEYSAM. (2016). EFFECT OF CUT TWISTED TAPE AND AL₂O₃ NANO FLUID ON HEAT TRANSFER OF DOUBLE TUBE HEAT EXCHANGER. MODARES MECHANICAL ENGINEERING, 15(11), 181-190. SID. https://sid.ir/paper/177734/en

Vancouver: Copy

KHANJANI SAMIRA, TAVAKOLI AKRAM, JALALI VAHID DAVOOD, NAZARI MEYSAM. EFFECT OF CUT TWISTED TAPE AND AL₂O₃ NANO FLUID ON HEAT TRANSFER OF DOUBLE TUBE HEAT EXCHANGER. MODARES MECHANICAL ENGINEERING[Internet]. 2016;15(11):181-190. Available from: https://sid.ir/paper/177734/en

IEEE: Copy

SAMIRA KHANJANI, AKRAM TAVAKOLI, DAVOOD JALALI VAHID, and MEYSAM NAZARI, “EFFECT OF CUT TWISTED TAPE AND AL₂O₃ NANO FLUID ON HEAT TRANSFER OF DOUBLE TUBE HEAT EXCHANGER,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 11, pp. 181–190, 2016, [Online]. Available: https://sid.ir/paper/177734/en

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