Abstract
The printed circuited heat exchanger (PCHE) contain several different channel configurations, such as straight channel, zigzag channel and wavy channel. The wavy channel has better thermal performance than the straight channel and better hydraulic performance than the zigzag channel. This paper explores the thermal hydraulic performance of wavy channel PCHE. The numerical analysis of the PCHE in different materials and geometric parameters are conducted by computational fluid dynamics (CFD) tool. The materials applied in simulations involve Alloy617, Titanium Grade 3, Carlson 2205, UNS S30400 and Sandvik 253A. The results show that the materials have little effect on the thermal-hydraulic performance. The geometric parameters include channel degree varying from 10°to 50°, channel amplitude varying from 1mm to 5mm and the radium of hot/cold channel varying from 0.4mm to 2.0mm. It is found that the larger radium of hot channel results out the lower Nusselt number and lower fanning-friction factor while the higher radium of cold channel produces the higher Nusselt number and lower fanning-friction factor. The larger channel amplitude indicates the higher fanning-friction factor and lower Nusselt number. The larger channel degree indicates the higher fanning-friction factor, and higher Nusselt number.
Highlights
The printed circuited heat exchanger (PCHE) are more and more popular in many areas, including nuclear energy, electronic cooling and ocean engineering
The results prove that the Nusselt number as well as the fanning friction factor decrease with the radium
The results prove that the Nusselt number increases while the fanning friction factor decreases with the radium
Summary
The PCHEs are more and more popular in many areas, including nuclear energy, electronic cooling and ocean engineering. Due to plenty of advantages, researchers pay much attentions on PCHE and make abundant studies around the thermal-hydraulic performance. Justin et al.[1] have investigated the thermal and hydraulic performance for straight channel PCHEs in Very High Temperature Reactors(VHTRs). Kim et al.[2] proposed a newly PCHE based and explored the local friction factor with different hydraulic diameters and inclination degrees in lower Reynolds. Ting Ma et al.[3] identifies the local thermal-hydraulic performance of zigzag channel PCHE at high temperature of 900°C. The academic community has extensively explored the thermal-hydraulic performance for PCHEs. little research has been conducted to show the effect of the materials and geometric parameters for the sinusoidal channel PCHE. The study explores thermal-hydraulic performance of sinusoidal channel PCHE with different materials and geometric parameters
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