Numerical analysis on heat transfer performance of oscillating flow in wavy channel

2022 ◽  
Vol 172 ◽  
pp. 107279
Author(s):  
Ge-Yu Zhong ◽  
Peng-Fan Chen ◽  
Fa-Zhu Liu ◽  
Ying-Wen Liu
Keyword(s):  
Heat Transfer ◽  
Numerical Analysis ◽  
Heat Transfer Performance ◽  
Oscillating Flow ◽  
Transfer Performance ◽  
Wavy Channel

Numerical analysis on pressure drop and heat transfer performance of mesh regenerators used in cryocoolers

Cryogenics ◽  
2009 ◽  
Vol 49 (9) ◽  
pp. 497-503 ◽  
Author(s):  
Y.B. Tao ◽  
Y.W. Liu ◽  
F. Gao ◽  
X.Y. Chen ◽  
Y.L. He
Keyword(s):  
Heat Transfer ◽  
Numerical Analysis ◽  
Pressure Drop ◽  
Heat Transfer Performance ◽  
Transfer Performance

scholarly journals Heating Performance Enhancement of High Capacity PTC Heater with Modified Louver Fin for Electric Vehicles

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2900 ◽  
Author(s):  
Myeong Hyeon Park ◽  
Sung Chul Kim
Keyword(s):  
Heat Transfer ◽  
Numerical Analysis ◽  
Electric Vehicles ◽  
Heat Transfer Performance ◽  
High Capacity ◽  
Heat Pumps ◽  
Geometric Shape ◽  
Positive Temperature ◽  
Transfer Performance ◽  
Heating Performance

Electric vehicles use positive temperature coefficient (PTC) heaters and heat pumps to warm the vehicle cabin. High-capacity PTC heaters are needed because heat pump performance decreases sharply in the winter months due to low outdoor temperatures. The weight of PTC heaters is an important heater design factor for improving the single-charge travel distance of electric vehicles. A fin shape is necessary to improve the heater’s heat transfer performance in comparison to its weight. To develop a 6 kW class high-capacity PTC heater for electric vehicles, this study presents a numerical analysis of heat flow according to a modified louver fin’s geometric shape variables and evaluates heating performance. Based on the geometric shape of an initial plate-shaped fin prototype, a numerical analysis was performed on the width, position, height, and angle to develop a modified louver fin while considering heat transfer performance and ease of manufacturing. An improved prototype was built using the developed modified louver fin, and its heating performance under standard conditions was evaluated. The improved prototype had a heating performance of 6.05 kW, an efficiency of 98.0%, a pressure drop of 18.3 Pa, and a heating density of 3.81 kW/kg. Compared to the initial prototype, its heating performance and heating density were improved by approximately 15.7%.

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