0
Research Papers: Two-Phase Flow and Heat Transfer

Experimental Study on Thermal Characteristics of Finned Coil LHSU Using Paraffin as Phase Change Material

[+] Author and Article Information
Guansheng Chen

School of Materials and Energy,
Guangdong University of Technology,
Guangzhou Higher Education Mega-Center,
Guangzhou 510006, China
e-mail: chengs@gdut.edu.cn

Nanshuo Li, Huanhuan Xiang, Fan Li

School of Materials and Energy,
Guangdong University of Technology,
Guangzhou Higher Education Mega-Center,
Guangzhou 510006, China

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received May 2, 2016; final manuscript received November 14, 2016; published online January 10, 2017. Assoc. Editor: Amy Fleischer.

J. Heat Transfer 139(4), 042901 (Jan 10, 2017) (7 pages) Paper No: HT-16-1242; doi: 10.1115/1.4035321 History: Received May 02, 2016; Revised November 14, 2016

It is well known that attaching fins on the tubes surfaces can enhance the heat transfer into and out from the phase change materials (PCMs). This paper presents the results of an experimental study on the thermal characteristics of finned coil latent heat storage unit (LHSU) using paraffin as the phase change material (PCM). The paraffin LHSU is a rectangular cube consists of continuous horizontal multibended tubes attached vertical fins at the pitches of 2.5, 5.0, and 7.5 mm that creates the heat transfer surface. The shell side along with the space around the tubes and fins is filled with the material RT54 allocated to store energy of water, which flows inside the tubes as heat transfer fluid (HTF). The measurement is carried out under four different water flow rates: 1.01, 1.30, 1.50, and 1.70 L/min in the charging and discharging process, respectively. The temperature of paraffin and water, charging and discharging wattage, and heat transfer coefficient are plotted in relation to the working time and water flow rate.

FIGURES IN THIS ARTICLE
<>
Copyright © 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Fan, L. , and Khodadadi, J. M. , 2011, “ Thermal Conductivity Enhancement of Phase Change Materials for Thermal Energy Storage: A Review,” Renewable Sustainable Energy Rev., 15(1), pp. 24–46. [CrossRef]
Sparrow, E. M. , Larson, E. D. , and Ramsey, J. M. , 1981, “ Freezing on a Finned Tube for Either Conduction-Controlled or Natural Convection-Controlled Heat Transfer,” Int. J. Heat Mass Transfer, 24(2), pp. 273–284. [CrossRef]
Balthelt, A. G. , and Viskanta, R. , 1981, “ Heat Transfer and Interface Motion During Melting and Solidification Around a Finned Horizontal Sink/Source,” ASME J. Heat Transfer, 103(4), pp. 720–726. [CrossRef]
Padmanabhan, P. V. , and Khrishna, M. V. , 1986, “ Outward Phase Change in a Cylindrical Annulus With Axial Fins on the Inner Tube,” Int. J. Heat Mass Transfer, 29(12), pp. 1855–1868. [CrossRef]
Ismail, K. A. R. , and Alves, C. L. , 1989, “ Numerical Solution of Finned Geometries Immersed in Phase Change Material,” 26th National Heat Transfer Conference, ASME-HTD, Philadelphia, PA, aug. 6–9, Vol. 109, pp. 31–36.
Lacroix, M. , 1993, “ Study of the Heat Transfer Behaviour of a Latent Heat Thermal Energy Storage Unit With a Finned Tube,” Int. J. Heat Mass Transfer, 36(8), pp. 2083–2092. [CrossRef]
Lamberg, P. , and Siren, K. , 2003, “ Analytical Model for Melting in a Semi-Finite PCM Storage With an Internal Fin,” Heat Mass Transfer, 39(2), pp. 167–176. [CrossRef]
Yuelian, Z. , and Danxing, Z. , 2006, “ Heat Transfer Performance of Paraffin as a Phase Change Material in a Concentric Annulus,” J. Beijing Univ. Chem. Tech., 33(2), pp. 5–8.
Agyenim, F. , Eames, P. , and Smyth, M. , 2011, “ Experimental Study on the Melting and Solidification Behaviour of a Medium Temperature Phase Change Storage Material (Erythritol) System Augmented With Fins to Power a LiBr/H2O Absorption Cooling System,” Renewable Energy, 36(1), pp. 108–117. [CrossRef]
Agyenim, F. , and Hewitt, N. , 2010, “ The Development of a Finned Phase Change Material (PCM) Storage System to Take Advantage of Off-Peak Electricity Tariff for Improvement in Cost of Heat Pump Operation,” Energy Build., 42(9), pp. 1552–1560. [CrossRef]
Agyenim, F. , Eames, P. , and Smyth, M. , 2009, “ A Comparison of Heat Transfer Enhancement in a Medium Temperature Thermal Energy Storage Heat Exchanger Using Fins,” Sol. Energy, 83(9), pp. 1509–1520. [CrossRef]
Ismail, K. A. R. , and Lino, F. A. M. , 2011, “ Fins and Turbulence Promoters for Heat Transfer Enhancement in Latent Storage Systems,” Exp. Therm. Fluid Sci., 35(6), pp. 1010–1018. [CrossRef]
Mosaffaa, A. H. , Talati, F. , Tabrizib, H. B. , and Rosen, M. A. , 2012, “ Analytical Modeling of PCM Solidification in a Shell and Tube Finned Thermal Storage for Air Conditioning Systems,” Energy Build., 49, pp. 356–361. [CrossRef]
Tay, N. H. S. , Bruno, F. , and Belusko, M. , 2013, “ Comparison of Pinned and Finned Tubes in a Phase Change Thermal Energy Storage System Using CFD,” Appl. Energy, 104, pp. 79–86. [CrossRef]
Tay, N. H. S. , Belusko, M. , Castell, A. , Cabeza, L. F. , and Bruno, F. , 2014, “ An Effectiveness-NTU Technique for Characterising a Finned Tubes PCM System Using a CFD Model,” Appl. Energy, 131, pp. 377–385. [CrossRef]
Al-Abidi, A. A. , Mat, S. , Sopian, K. , and Sulaiman, M. Y. , 2014, “ Experimental Study of Melting and Solidification of PCM in a Triplex Tube Heat Exchanger With Fins,” Energy Build., 68, pp. 33–41. [CrossRef]
Rahimi, M. , Ranjbar, A. A. , Ganji, D. D. , Sedighi, K. , Hosseini, M. J. , and Bahrampoury, R. , 2014, “ Analysis of Geometrical and Operational Parameters of PCM in a Fin and Tube Heat Exchanger,” Int. Commun. Heat Mass Transfer, 53, pp. 109–115. [CrossRef]
Rathod, M. K. , and Banerjee, J. , 2015, “ Thermal Performance Enhancement of Shell and Tube Latent Heat Storage Unit Using Longitudinal Fins,” Appl. Therm. Eng., 75, pp. 1084–1092. [CrossRef]
Jmal, I. , and Baccar, M. , 2015, “ Numerical Study of PCM Solidification in a Finned Tube Thermal Storage Including Natural Convection,” Appl. Therm. Eng., 84, pp. 320–330. [CrossRef]
Kong, Y. Q. , Yang, L. J. , Du, X. Z. , and Yang, Y. P. , 2016, “ Air-Side Flow and Heat Transfer Characteristics of Flat and Slotted Finned Tube Bundles With Various Tube Pitches,” Int. J. Heat Mass Transfer, 99, pp. 357–371. [CrossRef]
Chen, H. T. , Lin, Y. S. , Chen, P. C. , and Chang, J. R. , 2016, “ Numerical and Experimental Study of Natural Convection Heat Transfer Characteristics for Vertical Plate Fin and Tube Heat Exchangers With Various Tube Diameters,” Int. J. Heat Mass Transfer, 100, pp. 320–331. [CrossRef]

Figures

Grahic Jump Location
Fig. 1

Finned coils for test

Grahic Jump Location
Fig. 3

Charging and discharging process of the finned coil LHSU with Fp = 2.5 mm under the flow rate of 1.01 L/min: (a) Tc, (b) Qc and Kc, (c) Td, and (d) Qd and Kd

Grahic Jump Location
Fig. 4

Charging and discharging process of the finned coil LHSU with Fp = 5.0 mm under the flow rate of 1.50 L/min: (a) Tc, (b) Qc and Kc, (c) Td, and (d) Qd and Kd

Grahic Jump Location
Fig. 5

Effects of fin pitch and flow rate on the thermal characteristics of the finned coil LHSUs in the charging and discharging process: (a) Kcm, (b) Kdm, (c) Qcm, and (d) Qdm

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In