2018
DOI: 10.18280/ijht.360307
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The effects of fin height, fin-tube contact thickness and louver length on the performance of a compact fin-and-tube heat exchanger

Abstract: In this paper, the effects of fin height, louver length and fin-tube contact thickness on the amount of heat transfer and pressure drop in a compact louvered fin-and-tube heat exchanger were studied experimentally and numerically using the − method. The effects of fintube contact thickness (with the variations of this thickness being more than or less than fin thickness variation) and fin height and also the relationship between Louvre length and fin height were examined. To validate the modeling, first, the n… Show more

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Cited by 21 publications
(7 citation statements)
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“…Finally, we observe that at lower values of fin thickness, an increase in fin height has more effect on the efficiency of the heat exchanger. The Same observations were made by Kourosh et al, 2018 in their experimental study of the effects of fin height, fin-tube contact thickness compact of a heat exchanger [14]. The increase in cold air stream inlet temperature has a converging effect on the cold air stream outlet temperature at lower mass flow rates (figure 7c).…”
Section: Effects Of Fin Thicknesssupporting
confidence: 65%
“…Finally, we observe that at lower values of fin thickness, an increase in fin height has more effect on the efficiency of the heat exchanger. The Same observations were made by Kourosh et al, 2018 in their experimental study of the effects of fin height, fin-tube contact thickness compact of a heat exchanger [14]. The increase in cold air stream inlet temperature has a converging effect on the cold air stream outlet temperature at lower mass flow rates (figure 7c).…”
Section: Effects Of Fin Thicknesssupporting
confidence: 65%
“…Nu=0.023Re 0.8 Pr n (7) where n=0.4 for heating and 0.3 for cooling and Nu=hDh/kf. Dh=4A/P, hydraulic diameter where P is the wetted perimeter and kf is the thermal conductivity of the fluid calculated at film temperature.…”
Section: ′′ =Ht (1)mentioning
confidence: 99%
“…On the other hand the fin length has the least impact on the effectiveness compared with other geometric parameters although it has the direct connection with the heat transfer area. Javaherdeh et al [7] investigated the effects of fin height, optimal louver length and fin-louver contact thickness on the amount of heat transfer and pressure drop in a compact heat exchanger in their work. They validated their numerical results using several experimental tests were conducted in a wind tunnel facility, and found a good agreement between the experimental and numerical results.…”
Section: Introductionmentioning
confidence: 99%
“…On the tube side, the percent increase in the heat transfer coefficient is more influential than pressure drop whereas, on the shell side, a pressure drop is more significant. It has been reported by Javaherdeh et al [23] that heat transfer and pressure drop increases as the louver length is increased in louver finned tube heat exchangers due to which more fluid can pass across the fins. They also proposed an optimum louver length to fin height ratio that can further improve the performance.…”
Section: Introductionmentioning
confidence: 95%