Experimental investigation on the energy storage/discharge performance of xylitol in a compact spiral coil heat exchanger

2021 ◽  
Vol 159 ◽  
pp. 106633
Author(s):  
R. Anish ◽  
V. Mariappan ◽  
S. Suresh ◽  
Mahmood Mastani Joybari ◽  
Ammar M. Abdulateef
Keyword(s):  
Experimental Investigation ◽  
Energy Storage ◽  
Heat Exchanger ◽  
Spiral Coil ◽  
Discharge Performance ◽  
Coil Heat Exchanger ◽  
Coil Heat

A Variable-Curvature Spiral-Coil Heat Exchanger for Automobile Exhaust Heat Recovery

2019 ◽  
Vol 12 (3) ◽  
Author(s):  
Yu Zhu ◽  
Fengye Yang ◽  
Yueguang Guo
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Recovery ◽  
Heat Transfer Performance ◽  
Cone Angle ◽  
Spiral Coil ◽  
Variable Curvature ◽  
Exhaust Heat ◽  
Coil Heat Exchanger ◽  
Coil Heat

Abstract To improve the fuel efficiency of automobile engines and reduce pollution owing to automobile exhaust, this study discusses a fixed-curvature spiral-coil heat exchanger that recovers exhaust heat. Herein, the heat transfer performance of the spiral coil is studied via experimental testing and numerical simulation. In this study, a new type of variable-curvature spiral coil is designed to improve the efficiency of the heat exchanger. The effect of different conical angles on the resistance and heat transfer performance of the spiral coil within a range of Reynolds numbers of 4000–14,000 was analyzed. The heat exchange efficiency is a combination of the convective heat transfer and the overall heat recovery. The results of this study indicate that for a spiral-coil tube of length L, increasing the cone angle improves the convective heat transfer outside the tube. However, as the flow resistance increases, the exhaust heat recovery of a variable-curvature spiral-coil heat exchanger (VSE) is up to 18.8% higher than that of a constant curvature spiral-coil heat exchanger. The combined performance of VSE is excellent when the cone angle is 15 deg.

Performance of a compact, spiral coil heat exchanger

1995 ◽  
Vol 15 (5) ◽  
pp. 457-468 ◽  
Author(s):  
J.C. Ho ◽  
N.E. Wijeysundera ◽  
S. Rajasekar ◽  
T.T. Chandratilleke
Keyword(s):  
Heat Exchanger ◽  
Spiral Coil ◽  
Coil Heat Exchanger ◽  
Coil Heat

scholarly journals Investigation of the Dynamic Melting Process in a Thermal Energy Storage Unit Using a Helical Coil Heat Exchanger

Energies ◽  
2017 ◽  
Vol 10 (8) ◽  
pp. 1129 ◽  
Author(s):  
Xun Yang ◽  
Teng Xiong ◽  
Jing Liang Dong ◽  
Wen Xin Li ◽  
Yong Wang
Keyword(s):  
Energy Storage ◽  
Heat Exchanger ◽  
Thermal Energy ◽  
Melting Process ◽  
Helical Coil ◽  
Storage Unit ◽  
Energy Storage Unit ◽  
Coil Heat Exchanger ◽  
Dynamic Melting ◽  
Coil Heat
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