A numerical study is carried out on phase change material (PCM) impregnated in shell and tube heat exchangers with and without fins. The simultaneous charging and discharging (SCD) process is considered for the study, where the heat transfer occurs between heat transfer fluids (HTFs) and PCM simultaneously. The study intends to analyze the heat transport behavior of PCM and energy transport between the hot and cold HTFs. In the SCD process, the hot HTF is circulated through the hot tube, whereas cold HTF is made to simultaneously pass through the cold tube. The influence of the latent heat storage system (LHSS) inclination on the thermodynamic behavior of PCM with and without fins is inspected. To evaluate the effect of orientation four angles are considered. The angles include 90°, 60°, 30° and 0°. The investigation shows that the orientation significantly influences convective strength and melt fraction. An increase in melt fraction by 13.1% and 39.35% is observed when orientation is changed from 90° to 0° in finned and unfinned LHSS. It is also observed that the LHSS with fins gave an 18.31% higher melt fraction than without fins for vertical configuration. The LHSS with fins gave uniform temperatures and higher average Nusselt numbers. Among various configurations considered, LHSS with fins can be considered for 90° (vertical) and 60° orientations. In contrast, the LHSS without fins can be preferred for 30° and 0° (horizontal) positions.
SalunkhePBJaya KrishnaD. Investigations on latent heat storage materials for solar water and space heating applications. J Energy Storage2017; 12: 243–260.
2.
MarkandeyuluTDevanuriJKKiran KumarK. Multi-criteria optimization of a PCM based heat sink—effect of geometric parameters on operational time and melt fraction. J Therm Sci Eng Appl2022; 14: 1–9.
3.
ZhaoLXingYLiuX. Experimental investigation on the thermal management performance of heat sink using low melting point alloy as phase change material. Renew Energy2020; 146: 1578–1587.
4.
TyagiVVChopraKKalidasanB, et al. Phase change material based advance solar thermal energy storage systems for building heating and cooling applications: a prospective research approach. Sustain Energy Technol Assess2021; 47: 101318.
5.
MahianOGhafarianSSarrafhaH, et al.Phase change materials in solar photovoltaics applied in buildings: an overview. Sol Energy2021; 224: 569–592.
6.
SaxenaRRakshitDKaushikSC. Experimental assessment of phase change material (PCM) embedded bricks for passive conditioning in buildings. Renew Energy2020; 149: 587–599.
7.
DuKCalautitJEamesP, et al.A state-of-the-art review of the application of phase change materials (PCM) in mobilized-thermal energy storage (M-TES) for recovering low-temperature industrial waste heat (IWH) for distributed heat supply. Renew Energy2021; 168: 1040–1057.
KalapalaLDevanuriJK. Influence of operational and design parameters on the performance of a PCM based heat exchanger for thermal energy storage—a review. J Energy Storage2018; 20: 497–519.
10.
AbdulateefAMMatSAbdulateefJ, et al.Geometric and design parameters of fins employed for enhancing thermal energy storage systems: a review. Renew Sustain Energy Rev2018; 82: 1620–1635.
11.
LiMQuJZhangJ, et al.Air side heat transfer enhancement using radiantly arranged winglets in fin-and-tube heat exchanger. Int J Therm Sci2020; 156: 106470.
12.
AlhuyiMMalekiAElM, et al.A review of nanomaterial incorporated phase change materials for solar thermal energy storage. Sol Energy2021; 228: 725–743.
13.
AmudhalapalliGKDevanuriJK. Synthesis, characterization, thermophysical properties, stability and applications of nanoparticle enhanced phase change materials—a comprehensive review. Therm Sci Eng Prog2022; 28: 101049.
14.
SodhiGSMuthukumarP. Experimental and numerical investigations on the charging and discharging performances of high-temperature cylindrical phase change material encapsulations. Sol Energy2021; 224: 411–424.
15.
GraboMAcarEKenigEY. Modeling and improvement of a packed bed latent heat storage filled with non-spherical encapsulated PCM-elements. Renew Energy2021; 173: 1087–1097.
16.
FangYQuZGZhangJF, et al.Charging performance of latent thermal energy storage system with microencapsulated phase-change material for domestic hot water. Energy Build2020; 224: 110237.
17.
YangCXuYCaiX, et al.Effect of the circumferential and radial graded metal foam on horizontal shell-and-tube latent heat thermal energy storage unit. Sol Energy2021; 226: 225–235.
18.
GeRLiQLiC, et al.Evaluation of different melting performance enhancement structures in a shell-and-tube latent heat thermal energy storage system. Renew Energy2022; 187: 829–843.
19.
LNN. Assessment of latent heat thermal storage systems operating with multiple phase change materials. J Energy Storage2019; 23: 442–455.
20.
PuLZhangSXuL, et al.Numerical study on the performance of shell-and-tube thermal energy storage using multiple PCMs and gradient copper foam. Renew Energy2021; 174: 573–589.
21.
WaserRMarandaSStamatiouA, et al.Modeling of solidification including supercooling effects in a fin-tube heat exchanger based latent heat storage. Sol Energy2020; 200: 10–21.
22.
MaZYangWWYuanF, et al.Investigation on the thermal performance of a high-temperature latent heat storage system. Appl Therm Eng2017; 122: 579–592.
23.
KabbaraMGroulxDJosephA. Experimental investigations of a latent heat energy storage unit using finned tubes. Appl Therm Eng2016; 101: 601–611.
24.
MosaffaAHGarousi FarshiLInfante FerreiraCA, et al.Energy and exergy evaluation of a multiple-PCM thermal storage unit for free cooling applications. Renew Energy2014; 68: 452–458.
25.
ErekAIlkenZAcarMA. Experimental and numerical investigation of thermal energy storage with a finned tube. Int J Energy Res2005; 29: 283–301.
26.
ParsazadehMDuanX. Numerical study on the effects of fins and nanoparticles in a shell and tube phase change thermal energy storage unit. Appl Energy2018; 216: 142–156.
27.
JmalIBaccarM. Numerical study of PCM solidification in a finned tube thermal storage including natural convection. Appl Therm Eng2015; 84: 320–330.
28.
YangXLuZBaiQ, et al.Thermal performance of a shell-and-tube latent heat thermal energy storage unit: role of annular fins. Appl Energy2017; 202: 558–570.
29.
IsmailKARLinoFAM. Fins and turbulence promoters for heat transfer enhancement in latent heat storage systems. Exp Therm Fluid Sci2011; 35: 1010–1018.
30.
ShahsavarAGoodarziAMohammedHI, et al.Thermal performance evaluation of non-uniform fin array in a finned double-pipe latent heat storage system. Energy2020; 193: 116800.
31.
ZhaiXQChengXWWangC, et al.Experimental investigation and performance analysis of a fin tube phase change cold storage unit for high temperature cooling application. Energy Build2015; 89: 9–17.
32.
HosseiniMJRahimiMBahrampouryR. Thermal analysis of PCM containing heat exchanger enhanced with normal annular fines. Mech Sci2015; 6: 221–234.
33.
WangWWWangLBHeYL. Parameter effect of a phase change thermal energy storage unit with one shell and one finned tube on its energy efficiency ratio and heat storage rate. Appl Therm Eng2016; 93: 50–60.
34.
KalapalaLDevanuriJK. Optimization of fin parameters to reduce entropy generation and melting time of a latent heat storage unit. J Sol Energy Eng2020; 142: 1–12.
35.
KaramiRKamkariB. Investigation of the effect of inclination angle on the melting enhancement of phase change material in finned latent heat thermal storage units. Appl Therm Eng2019; 146: 45–60.
36.
MehtaDSVaghelaBRathodMK, et al.Heat transfer enhancement using spiral fins in different orientations of latent heat storage unit. Int J Therm Sci2021; 169: 107060.
37.
KalapalaLDevanuriJK. Effect of orientation on thermal performance of a latent heat storage system equipped with annular fins—an experimental and numerical investigation. Appl Therm Eng2021; 183: 116244.
38.
SeddeghSWangXHendersonAD. A comparative study of thermal behaviour of a horizontal and vertical shell-and-tube energy storage using phase change materials. Appl Therm Eng2016; 93: 348–358.
39.
MurrayREGroulxD. Experimental study of the phase change and energy characteristics inside a cylindrical latent heat energy storage system: part 2 simultaneous charging and discharging. Renew Energy2014; 63: 724–734.
40.
OmojaroPBreitkopfC. Investigating and modeling of simultaneous charging and discharging of a PCM heat exchanger. Energy Proc2014; 48: 413–422.
41.
OmojaroAPBreitkopfC. Study on solid liquid interface heat transfer of PCM under simultaneous charging and discharging (SCD) in horizontal cylinder annulus. Heat Mass Transf und Stoffuebertragung2017; 53: 2223–2240.
42.
JoybariMMHaghighatFSeddeghS. Numerical investigation of a triplex tube heat exchanger with phase change material—simultaneous charging and discharging. Energy Build2017; 139: 426–438.
43.
JoybariMMHaghighatFSeddeghS, et al.Simultaneous charging and discharging of phase change materials: development of correlation for liquid fraction. Sol Energy2019; 188: 788–798.
44.
KhobragadeSDevanuriJK. Energy and exergy analyses of simultaneous charging and discharging latent heat storage system at different inclination angles—an experimental study. J Energy Resour Technol Trans ASME2021; 143: 1–9.
45.
KhobragadeSDevanuriJK. Impact of inclination on the thermal performance of shell and tube latent heat storage system under simultaneous charging and discharging: numerical investigation. Appl Therm Eng2022; 214: 118811.
46.
MahdaviAErfani MoghaddamMAMahmoudiA. Simultaneous charging and discharging of multi-tube heat storage systems using copper fins and Cu nanoparticles. Case Stud Therm Eng2021; 27: 101343.
47.
MahdiJMLohrasbiSGanjiDD, et al.Simultaneous energy storage and recovery in the triplex-tube heat exchanger with PCM, copper fins and Al2O3 nanoparticles. Energy Convers Manag2019; 180: 949–961.
48.
FangYQuZGZhangJF, et al.Simultaneous charging and discharging performance for a latent thermal energy storage system with a microencapsulated phase change material. Appl Energy2020; 275: 115353.
49.
GaddalaUMDevanuriJK. A hybrid decision-making method for the selection of a PCM for thermal energy storage. J Therm Sci Eng Appl2020; 12: 041020.
50.
Maheswararao GUMajumadarANiphadkarT, et al.An image processing algorithm to estimate the melt fraction and energy storage of a PCM enclosed in a spherical capsule. Int J Energy Res2019; 43: 5535–5547.
51.
KalapalaLDevanuriJK. Energy and exergy analyses of latent heat storage unit positioned at different orientations—an experimental study. Energy2020; 194: 116924.
52.
KumarMKrishnaDJ. Influence of mushy zone constant on thermohydraulics of a PCM. Energy Proc2017; 109: 314–321.
53.
SinghRPXuHKaushikSC, et al.Effective utilization of natural convection via novel fin design & influence of enhanced viscosity due to carbon nano-particles in a solar cooling thermal storage system. Sol Energy2019; 183: 105–119.
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