Loop heat pipe (LHP) encased in phase change material (PCM) incorporated annular to catalytic converter (CC) is proposed to augment the performance of the “thermal energy storage” (TES). LHP are designed to extract surplus heat from the exhaust discharge, thereby reducing the amount of exhaust heat emitted into the atmosphere. A four-cylinder IC engine’s CC is considered with Mg70Zn24.9Al5.1, paraffin oil as PCM and working fluid for the heat pipe are evaluated. A comparative experimental investigation was performed considering two models for CC with and without heat pipe integrated in the TES for (i) distribution of average PCM temperature (ii) energy, exergy efficiency and distribution (iii) effectiveness (iv) instantaneous waste heat recovered during heat storage. Transient cycles at 2000 r/min with varying load conditions were run considering city drive conditions. Heat storage for CC with heat pipe encased in TES was found to be 35% faster, whereas discharge time for CC without heat pipe developed in TES was found to be longer. For melt fraction 1, maximum exergy efficiencies of 71% and 69% were observed for the TES unit with and without heat pipe. Heat pipes are observed to help extract a considerable amount of surplus heat from exhaust and reduce the exhaust gas outlet temperature released into the atmosphere by nearly 130 – 40°C under various load circumstances.
PanigrahiN. Energy and exergy analysis of a CI engine fuelled with polanga oil methyl ester. Energy Environ2018; 29(7): 1155–1173.
2.
MahabadipourHSrinivasanKKKrishnanSR. An exergy analysis methodology for internal combustion engines using a multi-zone simulation of dual fuel low temperature combustion. Appl Energy2019; 256: 113952. DOI: 10.1016/j.apenergy.2019.113952
3.
ValenciaGFontalvoACárdenasY, et al.Energy and exergy analysis of different exhaust waste heat recovery systems for natural gas engine based on ORC. Energies2019; 12(12): 2378.
4.
NazzalIT. Energy and exergy analysis of spark ignited engine fueled with Gasoline-Ethanol-Butanol blends. AIMS Energy2020; 8: 1007–1028.
5.
HewawasamLSJayasenaASAfnanMMM, et al.ScienceDirect Waste heat recovery from thermo-electric generators (TEGs). Energy Rep2020; 6: 474–479. DOI: 10.1016/j.egyr.2019.11.105
6.
KumarSHeisterSDXuX, et al.Thermoelectric generators for automotive waste heat recovery systems part I: Numerical modeling and baseline model analysis. J Electron Mater2013; 42(4): 665–674.
7.
KhanMQMalarmannanSManikandarajaG. Power generation from waste heat of vehicle exhaust using thermo electric generator: A review. IOP Conf Ser Mater Sci Eng2018; 402(1): 012174.
8.
CaoDLHongGLeAT. Applying chemical heat storage to saving exhaust gas energy in diesel engines: Principle, design and experiment. J Energy Storage2020; 28: 101311. DOI: 10.1016/j.est.2020.101311
9.
RijpkemaJErlandssonOAnderssonSB, et al.Exhaust waste heat recovery from a heavy-duty truck engine: Experiments and simulations. Energy2022; 238: 121698. DOI: 10.1016/j.energy.2021.121698
10.
DanielCJKogantiRMariadhasA. Waste heat recovery through cascaded thermal energy storage system from a diesel engine exhaust gas. Int J Ambient Energy2020; 0(0): 1–9. DOI: 10.1080/01430750.2020.1768896
11.
ReayDA. Thermal energy storage: The role of the heat pipe in performance enhancement. Int J Low Carbon Technol2015; 10(2): 99–109.
12.
DiaoYHWangSLiCZ, et al.Experimental study on the heat transfer characteristics of a new type flat micro heat pipe heat exchanger with latent heat thermal energy storage. Exp Heat Transf2017; 30(2): 91–111.
13.
MaldonadoJMde GraciaACabezaLF. Systematic review on the use of heat pipes in latent heat thermal energy storage tanks. J Energy Storage2020; 32: 101733. DOI: 10.1016/j.est.2020.101733
14.
SantosHCostaM. Evaluation of the conversion efficiency of ceramic and metallic three way catalytic converters. Energy Convers Manag2008; 49(2): 291–300.
15.
RobertsABrooksRShipwayP. Internal combustion engine cold-start efficiency: A review of the problem, causes and potential solutions. Energy Convers Manag2014; 82: 327–350. DOI: 10.1016/j.enconman.2014.03.002
16.
ShamimTShenHSenguptaS, et al.A comprehensive model to predict three-way catalytic converter performance. J Eng Gas Turbines Power2002; 124(2): 421–428.
17.
MichelPCharletAColinG, et al.Optimizing fuel consumption and pollutant emissions of gasoline-HEV with catalytic converter. Control Eng Pract2017; 61: 198–205. DOI: 10.1016/j.conengprac.2015.12.010
18.
JeongSJKimWS. Three-dimensional numerical study on the use of warm-up catalyst to improve light-off performance. SAE Tech Pap2000.
19.
BurchSDKeyserMAColucciCP, et al.Applications and benefits of catalytic converter thermal management. SAE Tech Pap1996.
20.
PadiyarAKumarKPJoshiAV, et al.Research Article Reduction of cold start emissions in automotivecatalytic converter using thermal energy storage system. J Chem Pharmaceut Res2016; 8(8): 1121–1125.
21.
HamediMRDoustdarOTsolakisA, et al.Thermal energy storage system for efficient diesel exhaust aftertreatment at low temperatures. Appl Energy2019; 235: 874–887. DOI: 10.1016/j.apenergy.2018.11.008
22.
GaoJTianGSorniottiA, et al.Review of thermal management of catalytic converters to decrease engine emissions during cold start and warm up. Appl Therm Eng2019; 147: 177–187. DOI: 10.1016/j.applthermaleng.2018.10.037
23.
AlvaGLinYFangG. An overview of thermal energy storage systems. Energy2018; 144: 341–378. DOI: 10.1016/j.energy.2017.12.037
24.
NazirHBatoolMBolivar OsorioFJ, et al.Recent developments in phase change materials for energy storage applications: A review. Int J Heat Mass Transf2019; 129: 491–523. DOI: 10.1016/j.ijheatmasstransfer.2018.09.126
25.
YueCZhangQZhaiZ, et al.CFD simulation on the heat transfer and flow characteristics of a microchannel separate heat pipe under different filling ratios. Appl Therm Eng2018; 139: 25–34. DOI: 10.1016/j.applthermaleng.2018.01.011
26.
PiseGNandgaonkarM. Thermal management of catalytic converter with heat pipe embedded in thermal energy storage to reduce cold start emissions. Energy Sources, Part A Recover Util Environ Eff2022; 44(4): 9935–9954. DOI: 10.1080/15567036.2022.2143949
27.
KhandekarSGrollM. On the Definition of Pulsating Heat Pipes: An overview. Proc 5th Minsk Int Semin (Heat Pipes, Heat Pumps Refrig)2003; 3: 12.
28.
SchwarzFDanovVLodermeyerA, et al.Thermodynamic analysis of the dryout limit of oscillating heat pipes. Energies2020; 13(23): 1–14.
29.
JaguemontJOmarNVan den BosscheP, et al.Phase-change materials (PCM) for automotive applications: A review. Appl Therm Eng2018; 132: 308–320. DOI: 10.1016/j.applthermaleng.2017.12.097
30.
GaiserGSeethalerC. Zero-delay light-off–A new cold-start concept with a latent heat storage integrated into a catalyst substrate. SAE Tech Pap2007; 2007.
RahimiMArdahaieSSHosseiniMJ, et al.Energy and exergy analysis of an experimentally examined latent heat thermal energy storage system. Renew Energy2020; 147: 1845–1860. DOI: 10.1016/j.renene.2019.09.121
33.
LiWWangJZhangX, et al.Experimental and numerical investigation of the melting process and heat transfer characteristics of multiple phase change materials. Int J Energy Res2020; 44(14): 11219–11232.
34.
MohagheghMRAlomairYAlomairM, et al.Melting of PCM inside a novel encapsulation design for thermal energy storage system. Energy Convers Manag X2021; 11: 100098. DOI: 10.1016/j.ecmx.2021.100098
35.
TayNHSBrunoFBeluskoM. Experimental validation of a CFD and an ε-NTU model for a large tube-in-tank PCM system. Int J Heat Mass Transf2012; 55(21–22): 5931–5940. DOI: 10.1016/j.ijheatmasstransfer.2012.06.004
36.
FadlMMahonDEamesPC. Thermal performance analysis of compact thermal energy storage unit-An experimental study. Int J Heat Mass Transf2021; 173: 121262. DOI: 10.1016/j.ijheatmasstransfer.2021.121262
