PIV and thermal-vision experimental and numerical investigation on the airside performance of slotted fin surfaces

Li, Hongzhi; Wang, Haijun; Yao, Mingyu; Zhang, Lixin; Gu, Hongfang; Jianping, Nie

doi:10.1016/j.ijheatmasstransfer.2014.11.039

Cited by 23 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Li et al 9 experimentally and numerically compared the fluid flow structure and heat transfer characteristics of a flow‐through butterfly type, x‐type, and arc type slotted fins. Their study was carried out using seven flow velocity variations in the Reynolds number range of 558–2235.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer intensification with field synergy principle in a fin‐and‐tube heat exchanger through convex strip installation

Syaiful

Wicaksono

et al. 2022

Engineering Reports

View full text Add to dashboard Cite

Improvement of heat transfer using surface protrusion (convex strip) has been effective recently. Surface protrusion is able to improve flow mixing which increases the rate of heat transfer. Therefore, this study aims to improve the heat transfer in a fin-and-tube heat exchanger by fitting convex strips around the tubes. Three-dimensional modeling was carried out by placing four and eight convex strips around the staggered tubes at a constant temperature of 106 • C. The turbulent k-ε model was applied at a Reynolds number range of 3438-15,926.The results of the study indicate that tubes with eight convex strips demonstrated a heat transfer improvement of 40.46%, compared to that with four convex strips. In this case, the TEF is 6.27% higher than the four convex strips. In addition, the synergy angle in the eight convex strips configuration was 0.13% lower than that of the four convex strips configuration. Meanwhile, the flow resistance in the tubes with eight convex strips configurations was 30.96% higher than that of the four convex strips.

show abstract

Section: Introductionmentioning

confidence: 99%

Heat transfer intensification with field synergy principle in a fin‐and‐tube heat exchanger through convex strip installation

Syaiful

Wicaksono

et al. 2022

Engineering Reports

View full text Add to dashboard Cite

show abstract

“…The convection heat transfer rate can be increased by manipulating the air fin side heat transfer design. Various fin designs have been used to increase heat transfer rates such as wavy fin [1][2][3], slotted fin [4][5][6][7][8][9][10], and fin with vortex generator [1,[11][12][13][14][15][16][17][18]. Zhang et al [1] conducted a study by improvising wavy fin into a humped wavy fin.…”

Section: Introductionmentioning

confidence: 99%

“…The results of their study showed that the heat transfer coefficient in continuous slots fin with staggered configuration was the highest compared to all the variations in alternating fin slots and plain fin. Li et al [6] investigated experimentally and numerically the performance of the air side of the slotted fin surface of the arc, X, and butterfly types. The analysis shows that the butterfly type slotted fin reduces the domain average synergy angle, thus increasing the temperature gradient.…”

Section: Introductionmentioning

confidence: 99%

“…The VG CRW heat transfer coefficient increases by 102% in the Reynolds number Re=364. The proven passive method [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] effectively increases the thermal performance of heat exchangers, so Li et al [12] conducted experimental tests on fin and tube heat exchangers by adding convex-strips around the tube. Their experimental results show that the use of convex-striped fin increases the Nusselt number to 25% higher than the plain fin case.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Heat Transfer Intensification by Means of Convex-Strip Around Tube in Fin and Tube Heat Exchanger with Field Synergy Principle

Syaiful¹,

Yoel²,

Sinaga³

et al. 2022

IJHT

View full text Add to dashboard Cite

Fin and tube is a compact heat exchanger, have been widely used in various engineering fields such as heating, ventilation, air conditioning, and refrigeration systems. An example, indoor and outdoor air-conditioning, the air is used as one of the heat exchanger media. However, over 90% of the total thermal resistance from air to liquid lies on the airside. Therefore, the reduction of thermal resistance should be made to increase heat transfer. This study is intended to investigate the effect of enhancing convex-strip surface to heat transfer and friction characteristic on the heat exchanger. Three-dimensional modeling of the convex fin and the plain fin was conducted on a constant tube temperature of 106℃. Tube with the configuration of the six staggered strands on the odd tube and five rows on the even tube is determined. The velocity variation in the fin gap is assessed under the Reynolds number range between 3,438 to 15,926. The enhancement of four convex-strips around the tube on the fin surface can generate the value of the field synergy angle on fluid flow. The simulation results also show that the improvement of convection heat transfer coefficient value in convex-strip fin with staggered configuration is 15.39% higher than plain-fin.

show abstract

Fluid flow and heat transfer characteristics in plate-fin heat exchanger with irregular-shaped hole leading flow structure

et al. 2021

View full text Add to dashboard Cite

PIV and thermal-vision experimental and numerical investigation on the airside performance of slotted fin surfaces

Cited by 23 publications

References 26 publications

Heat transfer intensification with field synergy principle in a fin‐and‐tube heat exchanger through convex strip installation

Heat transfer intensification with field synergy principle in a fin‐and‐tube heat exchanger through convex strip installation

Heat Transfer Intensification by Means of Convex-Strip Around Tube in Fin and Tube Heat Exchanger with Field Synergy Principle

Fluid flow and heat transfer characteristics in plate-fin heat exchanger with irregular-shaped hole leading flow structure

Contact Info

Product

Resources

About