4.3 Article

Experimental hydrothermal characteristics of concentric tube heat exchanger with V-cut twisted tape turbulator using PCM dispersed mono/hybrid nanofluids

期刊

EXPERIMENTAL HEAT TRANSFER
卷 34, 期 5, 页码 421-442

出版社

TAYLOR & FRANCIS INC
DOI: 10.1080/08916152.2020.1772412

关键词

hybrid nanofluid; phase change material; V-cuts twisted tape; heat transfer coefficient; pressure drop; entropy generation

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The experimental investigation on the impact of using V-cuts twisted tape insert and phase change material (PCM) dispersed mono or hybrid nanofluid on the hydrothermal characteristics of a double tube heat exchanger revealed that heat transfer and pressure drop increase with particle concentration and decrease with twisting ratio. The study also found that a higher V-cut depth ratio or lower width ratio leads to higher heat transfer and pressure drop.
Impact of using V-cuts twisted tape insert and phase change material (PCM) dispersed mono or hybrid nanofluid on the hydrothermal characteristics of the double tube heat exchanger is experimentally investigated. Water-based Al(2)O(3)and PCM nanofluids and Al2O3+ PCM hybrid nanofluid with different concentrations are used in inner tube. Influences of various geometric parameters of V-cuts twisted tape insert on heat transfer, pressure drop and entropy generation are investigated. Results reveal that heat transfer and pressure drop increase with the increase in particle concentration and decrease in twisting ratio. A higher V-cut depth ratio or lower width ratio yields more heat transfer and pressure drop.

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