메뉴 건너뛰기




Volumn 30, Issue 11, 2016, Pages 9652-9657

Preparation and Thermal Performance of Silica/n-Tetradecane Microencapsulated Phase Change Material for Cold Energy Storage

Author keywords

[No Author keywords available]

Indexed keywords

CHEMICAL ANALYSIS; CHEMICAL STABILITY; COREMAKING; CRYOGENIC ENERGY STORAGE; DIFFERENTIAL SCANNING CALORIMETRY; EMULSIFICATION; FOURIER TRANSFORM INFRARED SPECTROSCOPY; INTERFACIAL POLYCONDENSATION; MICROENCAPSULATION; PHASE CHANGE MATERIALS; SCANNING ELECTRON MICROSCOPY; SILICA; SILICATES; SPECTROMETERS; THERMODYNAMIC STABILITY; THERMOGRAVIMETRIC ANALYSIS; X RAY DIFFRACTION; X RAY SPECTROMETERS;

EID: 84995977113     PISSN: 08870624     EISSN: 15205029     Source Type: Journal    
DOI: 10.1021/acs.energyfuels.6b01799     Document Type: Article
Times cited : (68)

References (37)
  • 1
    • 72049117880 scopus 로고    scopus 로고
    • A review of materials, heat transfer and phase change problem formulation for latent heat thermal energy storage systems (LHTESS)
    • Agyenim, F.; Hewitt, N.; Eames, P.; Smyth, M. A review of materials, heat transfer and phase change problem formulation for latent heat thermal energy storage systems (LHTESS) Renewable Sustainable Energy Rev. 2010, 14 (2) 615-628 10.1016/j.rser.2009.10.015
    • (2010) Renewable Sustainable Energy Rev. , vol.14 , Issue.2 , pp. 615-628
    • Agyenim, F.1    Hewitt, N.2    Eames, P.3    Smyth, M.4
  • 2
    • 84888084522 scopus 로고    scopus 로고
    • Parametric studies on packed bed storage unit filled with PCM encapsulated spherical containers for low temperature solar air heating applications
    • Karthikeyan, S.; Solomon, G. R.; Kumaresan, V.; Velraj, R. Parametric studies on packed bed storage unit filled with PCM encapsulated spherical containers for low temperature solar air heating applications Energy Convers. Manage. 2014, 78 (1) 74-80 10.1016/j.enconman.2013.10.042
    • (2014) Energy Convers. Manage. , vol.78 , Issue.1 , pp. 74-80
    • Karthikeyan, S.1    Solomon, G.R.2    Kumaresan, V.3    Velraj, R.4
  • 3
    • 84903723034 scopus 로고    scopus 로고
    • Micro/nanoencapsulated n -nonadecane with poly(methyl methacrylate) shell for thermal energy storage
    • Sarl, A.; Alkan, C.; Biçer, A.; Altuntaş, A.; Bilgin, C. Micro/nanoencapsulated n -nonadecane with poly(methyl methacrylate) shell for thermal energy storage Energy Convers. Manage. 2014, 86 (10) 614-621 10.1016/j.enconman.2014.05.092
    • (2014) Energy Convers. Manage. , vol.86 , Issue.10 , pp. 614-621
    • Sarl, A.1    Alkan, C.2    Biçer, A.3    Altuntaş, A.4    Bilgin, C.5
  • 4
    • 84887214443 scopus 로고    scopus 로고
    • Thermal conductivity and latent heat thermal energy storage properties of LDPE/wax as a shape-stabilized composite phase change material
    • Trigui, A.; Karkri, M.; Krupa, I. Thermal conductivity and latent heat thermal energy storage properties of LDPE/wax as a shape-stabilized composite phase change material Energy Convers. Manage. 2014, 77 (1) 586-596 10.1016/j.enconman.2013.09.034
    • (2014) Energy Convers. Manage. , vol.77 , Issue.1 , pp. 586-596
    • Trigui, A.1    Karkri, M.2    Krupa, I.3
  • 5
    • 84937973707 scopus 로고    scopus 로고
    • Review on nanoencapsulated phase change materials: Preparation, characterization and heat transfer enhancement
    • Liu, C.; Rao, Z.; Zhao, J.; Huo, Y.; Li, Y. Review on nanoencapsulated phase change materials: Preparation, characterization and heat transfer enhancement Nano Energy 2015, 13, 814-826 10.1016/j.nanoen.2015.02.016
    • (2015) Nano Energy , vol.13 , pp. 814-826
    • Liu, C.1    Rao, Z.2    Zhao, J.3    Huo, Y.4    Li, Y.5
  • 6
    • 84910097481 scopus 로고    scopus 로고
    • Carbon footprint of a thermal energy storage system using phase change materials for industrial energy recovery to reduce the fossil fuel consumption White star
    • López-Sabirón, A. M.; Royo, P.; Ferreira, V. J.; Aranda-Usón, A.; Ferreira, G. Carbon footprint of a thermal energy storage system using phase change materials for industrial energy recovery to reduce the fossil fuel consumption White star Appl. Energy 2014, 135, 616-624 10.1016/j.apenergy.2014.08.038
    • (2014) Appl. Energy , vol.135 , pp. 616-624
    • López-Sabirón, A.M.1    Royo, P.2    Ferreira, V.J.3    Aranda-Usón, A.4    Ferreira, G.5
  • 8
    • 84940252078 scopus 로고    scopus 로고
    • Potential applications of phase-change materials (PCM) in building energy efficiency
    • Li, Y.; Sang, G.; Shi, H. Potential applications of phase-change materials (PCM) in building energy efficiency J. New Mater. Electrochem. Syst. 2014, 17, 123-127
    • (2014) J. New Mater. Electrochem. Syst. , vol.17 , pp. 123-127
    • Li, Y.1    Sang, G.2    Shi, H.3
  • 10
    • 84912102893 scopus 로고    scopus 로고
    • Thermal management of electronic devices using carbon foam and PCM/nano-composite
    • Alshaer, W. G.; Nada, S. A.; Rady, M. A.; Del Barrio, E. P.; Sommier, A. Thermal management of electronic devices using carbon foam and PCM/nano-composite Int. J. Therm. Sci. 2015, 89, 79-86 10.1016/j.ijthermalsci.2014.10.012
    • (2015) Int. J. Therm. Sci. , vol.89 , pp. 79-86
    • Alshaer, W.G.1    Nada, S.A.2    Rady, M.A.3    Del Barrio, E.P.4    Sommier, A.5
  • 11
    • 84930650870 scopus 로고    scopus 로고
    • Experimental comparison between different configurations of PCM based heat sinks for cooling electronic components
    • Gharbi, S.; Harmand, S.; Jabrallah, S. B. Experimental comparison between different configurations of PCM based heat sinks for cooling electronic components Appl. Therm. Eng. 2015, 87, 454-462 10.1016/j.applthermaleng.2015.05.024
    • (2015) Appl. Therm. Eng. , vol.87 , pp. 454-462
    • Gharbi, S.1    Harmand, S.2    Jabrallah, S.B.3
  • 12
    • 84866788063 scopus 로고    scopus 로고
    • Modeling and optimization of a solar assisted heat pump using ice slurry as a latent storage material
    • Tamasauskas, J.; Poirier, M.; Zmeureanu, R.; Sunyé, R. Modeling and optimization of a solar assisted heat pump using ice slurry as a latent storage material Sol. Energy 2012, 86 (11) 3316-3325 10.1016/j.solener.2012.08.021
    • (2012) Sol. Energy , vol.86 , Issue.11 , pp. 3316-3325
    • Tamasauskas, J.1    Poirier, M.2    Zmeureanu, R.3    Sunyé, R.4
  • 13
    • 84883356523 scopus 로고    scopus 로고
    • Preparation and thermal performance of polystyrene/n-tetradecane composite nanoencapsulated cold energy storage phase change materials
    • Fang, Y.; Yu, H.; Wan, W.; Gao, X.; Zhang, Z. Preparation and thermal performance of polystyrene/n-tetradecane composite nanoencapsulated cold energy storage phase change materials Energy Convers. Manage. 2013, 76 (12) 430-436 10.1016/j.enconman.2013.07.060
    • (2013) Energy Convers. Manage. , vol.76 , Issue.12 , pp. 430-436
    • Fang, Y.1    Yu, H.2    Wan, W.3    Gao, X.4    Zhang, Z.5
  • 14
    • 84948425929 scopus 로고    scopus 로고
    • Application of calcium chloride as an additive for secondary refrigerant in the air conditioning system type chiller to minimized energy consumption
    • Suwono, A.; Indartono, Y.; Irsyad, M.; Al-Afkar, I. Application of calcium chloride as an additive for secondary refrigerant in the air conditioning system type chiller to minimized energy consumption IOP Conf. Ser.: Mater. Sci. Eng. 2015, 88, 012035 10.1088/1757-899X/88/1/012035
    • (2015) IOP Conf. Ser.: Mater. Sci. Eng. , vol.88
    • Suwono, A.1    Indartono, Y.2    Irsyad, M.3    Al-Afkar, I.4
  • 15
    • 84949238743 scopus 로고    scopus 로고
    • Salt hydrates as latent heat storage materials: Thermophysical properties and costs
    • Kenisarin, M.; Mahkamov, K. Salt hydrates as latent heat storage materials: Thermophysical properties and costs Sol. Energy Mater. Sol. Cells 2016, 145, 255-286 10.1016/j.solmat.2015.10.029
    • (2016) Sol. Energy Mater. Sol. Cells , vol.145 , pp. 255-286
    • Kenisarin, M.1    Mahkamov, K.2
  • 16
    • 78049521585 scopus 로고    scopus 로고
    • Preparation, thermal properties and thermal reliability of microencapsulated n-eicosane as novel phase change material for thermal energy storage
    • Alkan, C.; Sarl, A.; Karaipekli, A. Preparation, thermal properties and thermal reliability of microencapsulated n-eicosane as novel phase change material for thermal energy storage Energy Convers. Manage. 2011, 52 (1) 687-692 10.1016/j.enconman.2010.07.047
    • (2011) Energy Convers. Manage. , vol.52 , Issue.1 , pp. 687-692
    • Alkan, C.1    Sarl, A.2    Karaipekli, A.3
  • 17
    • 84855314078 scopus 로고    scopus 로고
    • Preparation, characterization and thermal properties of micro-encapsulated phase change materials
    • Pan, L.; Tao, Q.; Zhang, S.; Wang, S.; Zhang, J.; Wang, S.; Wang, Z.; Zhang, Z. Preparation, characterization and thermal properties of micro-encapsulated phase change materials Sol. Energy Mater. Sol. Cells 2012, 98, 66-70 10.1016/j.solmat.2011.09.020
    • (2012) Sol. Energy Mater. Sol. Cells , vol.98 , pp. 66-70
    • Pan, L.1    Tao, Q.2    Zhang, S.3    Wang, S.4    Zhang, J.5    Wang, S.6    Wang, Z.7    Zhang, Z.8
  • 18
    • 84930207695 scopus 로고    scopus 로고
    • Preparation of microencapsulated medium temperature phase change material of Tris (hydroxymethyl) methyl aminomethane@ SiO 2 with excellent cycling performance
    • Wu, C.-B.; Wu, G.; Yang, X.; Liu, Y.-J.; Liang, T.; Fu, W.-F.; Wang, M.; Chen, H.-Z. Preparation of microencapsulated medium temperature phase change material of Tris (hydroxymethyl) methyl aminomethane@ SiO 2 with excellent cycling performance Appl. Energy 2015, 154, 361-368 10.1016/j.apenergy.2015.05.029
    • (2015) Appl. Energy , vol.154 , pp. 361-368
    • Wu, C.-B.1    Wu, G.2    Yang, X.3    Liu, Y.-J.4    Liang, T.5    Fu, W.-F.6    Wang, M.7    Chen, H.-Z.8
  • 19
    • 84894562599 scopus 로고    scopus 로고
    • Palmitic acid/polypyrrole composites as form-stable phase change materials for thermal energy storage
    • Silakhori, M.; Metselaar, H. S. C.; Mahlia, T. M. I.; Fauzi, H.; Baradaran, S.; Naghavi, M. S. Palmitic acid/polypyrrole composites as form-stable phase change materials for thermal energy storage Energy Convers. Manage. 2014, 80, 491-497 10.1016/j.enconman.2014.01.023
    • (2014) Energy Convers. Manage. , vol.80 , pp. 491-497
    • Silakhori, M.1    Metselaar, H.S.C.2    Mahlia, T.M.I.3    Fauzi, H.4    Baradaran, S.5    Naghavi, M.S.6
  • 20
    • 84891159771 scopus 로고    scopus 로고
    • Preparation and thermal properties of palmitic acid/polyaniline/exfoliated graphite nanoplatelets form-stable phase change materials
    • Zeng, J.-L.; Zheng, S.-H.; Yu, S.-B.; Zhu, F.-R.; Gan, J.; Zhu, L.; Xiao, Z.-L.; Zhu, X.-Y.; Zhu, Z.; Sun, L.-X. et al. Preparation and thermal properties of palmitic acid/polyaniline/exfoliated graphite nanoplatelets form-stable phase change materials Appl. Energy 2014, 115, 603-609 10.1016/j.apenergy.2013.10.061
    • (2014) Appl. Energy , vol.115 , pp. 603-609
    • Zeng, J.-L.1    Zheng, S.-H.2    Yu, S.-B.3    Zhu, F.-R.4    Gan, J.5    Zhu, L.6    Xiao, Z.-L.7    Zhu, X.-Y.8    Zhu, Z.9    Sun, L.-X.10
  • 21
    • 84898461169 scopus 로고    scopus 로고
    • Micro/nano-encapsulated n-heptadecane with polystyrene shell for latent heat thermal energy storage
    • Sari, A.; Alkan, C.; Döǧüşcü, D. K.; Biçer, A. Micro/nano-encapsulated n-heptadecane with polystyrene shell for latent heat thermal energy storage Sol. Energy Mater. Sol. Cells 2014, 126, 42-50 10.1016/j.solmat.2014.03.023
    • (2014) Sol. Energy Mater. Sol. Cells , vol.126 , pp. 42-50
    • Sari, A.1    Alkan, C.2    Döǧüşcü, D.K.3    Biçer, A.4
  • 22
    • 84924586296 scopus 로고    scopus 로고
    • Micro/nano encapsulated n-tetracosane and n-octadecane eutectic mixture with polystyrene shell for low-temperature latent heat thermal energy storage applications
    • Sari, A.; Alkan, C.; Döǧüşcü, D. K.; Kizil, Ç. Micro/nano encapsulated n-tetracosane and n-octadecane eutectic mixture with polystyrene shell for low-temperature latent heat thermal energy storage applications Sol. Energy 2015, 115, 195-203 10.1016/j.solener.2015.02.035
    • (2015) Sol. Energy , vol.115 , pp. 195-203
    • Sari, A.1    Alkan, C.2    Döǧüşcü, D.K.3    Kizil, Ç.4
  • 23
    • 84903948024 scopus 로고    scopus 로고
    • Modification and evaluation of thermal properties of melamine-formaldehyde/n-eicosane microcapsules for thermo-regulation applications
    • Mohaddes, F.; Islam, S.; Shanks, R.; Fergusson, M.; Wang, L.; Padhye, R. Modification and evaluation of thermal properties of melamine-formaldehyde/n-eicosane microcapsules for thermo-regulation applications Appl. Therm. Eng. 2014, 71 (1) 11-15 10.1016/j.applthermaleng.2014.06.016
    • (2014) Appl. Therm. Eng. , vol.71 , Issue.1 , pp. 11-15
    • Mohaddes, F.1    Islam, S.2    Shanks, R.3    Fergusson, M.4    Wang, L.5    Padhye, R.6
  • 24
    • 84895895348 scopus 로고    scopus 로고
    • Optimization of parameters in preparation of PCM microcapsules based on melamine formaldehyde through dispersion polymerization
    • Khakzad, F.; Alinejad, Z.; Shirin-Abadi, A. R.; Ghasemi, M.; Mahdavian, A. R. Optimization of parameters in preparation of PCM microcapsules based on melamine formaldehyde through dispersion polymerization Colloid Polym. Sci. 2014, 292 (2) 355-368 10.1007/s00396-013-3076-9
    • (2014) Colloid Polym. Sci. , vol.292 , Issue.2 , pp. 355-368
    • Khakzad, F.1    Alinejad, Z.2    Shirin-Abadi, A.R.3    Ghasemi, M.4    Mahdavian, A.R.5
  • 25
    • 84924588671 scopus 로고    scopus 로고
    • Microencapsulation of n-hexadecanol by in situ polymerization of melamine-formaldehyde resin in emulsion stabilized by styrene-maleic anhydride copolymer
    • Yin, D.; Ma, L.; Geng, W.; Zhang, B.; Zhang, Q. Microencapsulation of n-hexadecanol by in situ polymerization of melamine-formaldehyde resin in emulsion stabilized by styrene-maleic anhydride copolymer Int. J. Energy Res. 2015, 39 (5) 661-667 10.1002/er.3276
    • (2015) Int. J. Energy Res. , vol.39 , Issue.5 , pp. 661-667
    • Yin, D.1    Ma, L.2    Geng, W.3    Zhang, B.4    Zhang, Q.5
  • 26
    • 84958162740 scopus 로고    scopus 로고
    • Preparation and characterization of urea-formaldehyde microcapsules filled with paraffin oil
    • Fayyad, E. M.; Almaadeed, M. A.; Jones, A. Preparation and characterization of urea-formaldehyde microcapsules filled with paraffin oil Polym. Bull. 2016, 73, 631-646 10.1007/s00289-015-1518-x
    • (2016) Polym. Bull. , vol.73 , pp. 631-646
    • Fayyad, E.M.1    Almaadeed, M.A.2    Jones, A.3
  • 27
    • 84899447020 scopus 로고    scopus 로고
    • Effect of curing temperature on the performance of microencapsulated low melting point paraffin using urea-formaldehyde resin as shell
    • Xin, C.; Tian, Y.; Wang, Y.; Huang, X. A. Effect of curing temperature on the performance of microencapsulated low melting point paraffin using urea-formaldehyde resin as shell Text. Res. J. 2014, 84, 831 10.1177/0040517513507367
    • (2014) Text. Res. J. , vol.84 , pp. 831
    • Xin, C.1    Tian, Y.2    Wang, Y.3    Huang, X.A.4
  • 28
    • 67651115706 scopus 로고    scopus 로고
    • Preparation and characterization of nano-encapsulated n-tetradecane as phase change material for thermal energy storage
    • Fang, G.; Li, H.; Yang, F.; Liu, X.; Wu, S. Preparation and characterization of nano-encapsulated n-tetradecane as phase change material for thermal energy storage Chem. Eng. J. 2009, 153 (1) 217-221 10.1016/j.cej.2009.06.019
    • (2009) Chem. Eng. J. , vol.153 , Issue.1 , pp. 217-221
    • Fang, G.1    Li, H.2    Yang, F.3    Liu, X.4    Wu, S.5
  • 29
    • 84889085624 scopus 로고    scopus 로고
    • Microencapsulation of caprylic acid with different wall materials as phase change material for thermal energy storage
    • Konuklu, Y.; Unal, M.; Paksoy, H. O. Microencapsulation of caprylic acid with different wall materials as phase change material for thermal energy storage Sol. Energy Mater. Sol. Cells 2014, 120, 536-542 10.1016/j.solmat.2013.09.035
    • (2014) Sol. Energy Mater. Sol. Cells , vol.120 , pp. 536-542
    • Konuklu, Y.1    Unal, M.2    Paksoy, H.O.3
  • 30
    • 84901951522 scopus 로고    scopus 로고
    • Preparation and characterization of microencapsulated n-octadecane as phase change material with different n-butyl methacrylate-based copolymer shells
    • Qiu, X.; Lu, L.; Wang, J.; Tang, G.; Song, G. Preparation and characterization of microencapsulated n-octadecane as phase change material with different n-butyl methacrylate-based copolymer shells Sol. Energy Mater. Sol. Cells 2014, 128, 102-111 10.1016/j.solmat.2014.05.020
    • (2014) Sol. Energy Mater. Sol. Cells , vol.128 , pp. 102-111
    • Qiu, X.1    Lu, L.2    Wang, J.3    Tang, G.4    Song, G.5
  • 31
    • 79960562676 scopus 로고    scopus 로고
    • Experiment on heat storage characteristic of microencapsulated phase change material slurry
    • Zhang, Y.; Wang, S.; Rao, Z.; Xie, J. Experiment on heat storage characteristic of microencapsulated phase change material slurry Sol. Energy Mater. Sol. Cells 2011, 95 (10) 2726-2733 10.1016/j.solmat.2011.02.015
    • (2011) Sol. Energy Mater. Sol. Cells , vol.95 , Issue.10 , pp. 2726-2733
    • Zhang, Y.1    Wang, S.2    Rao, Z.3    Xie, J.4
  • 32
    • 84959888425 scopus 로고    scopus 로고
    • Formation of Pickering emulsion by use of PCM and SiC and application to preparation of hybrid microcapsules with interfacial polycondensation reaction
    • Taguchi, Y.; Morita, R.; Saito, N.; Tanaka, M. Formation of Pickering emulsion by use of PCM and SiC and application to preparation of hybrid microcapsules with interfacial polycondensation reaction Polym. Adv. Technol. 2016, 27, 422 10.1002/pat.3687
    • (2016) Polym. Adv. Technol. , vol.27 , pp. 422
    • Taguchi, Y.1    Morita, R.2    Saito, N.3    Tanaka, M.4
  • 33
    • 84902479340 scopus 로고    scopus 로고
    • Microencapsulated capric-stearic acid with silica shell as a novel phase change material for thermal energy storage
    • Song, S.; Dong, L.; Qu, Z.; Ren, J.; Xiong, C. Microencapsulated capric-stearic acid with silica shell as a novel phase change material for thermal energy storage Appl. Therm. Eng. 2014, 70 (1) 546-551 10.1016/j.applthermaleng.2014.05.067
    • (2014) Appl. Therm. Eng. , vol.70 , Issue.1 , pp. 546-551
    • Song, S.1    Dong, L.2    Qu, Z.3    Ren, J.4    Xiong, C.5
  • 34
    • 84887251363 scopus 로고    scopus 로고
    • Microencapsulation of n-octadecane phase change material with calcium carbonate shell for enhancement of thermal conductivity and serving durability: Synthesis, microstructure, and performance evaluation
    • Yu, S.; Wang, X.; Wu, D. Microencapsulation of n-octadecane phase change material with calcium carbonate shell for enhancement of thermal conductivity and serving durability: synthesis, microstructure, and performance evaluation Appl. Energy 2014, 114, 632-643 10.1016/j.apenergy.2013.10.029
    • (2014) Appl. Energy , vol.114 , pp. 632-643
    • Yu, S.1    Wang, X.2    Wu, D.3
  • 35
    • 33846091156 scopus 로고    scopus 로고
    • Preparation and thermal properties of microencapsulated phase change material for enhancing fluid flow heat transfer
    • Rao, Y.; Lin, G.; Luo, Y.; Chen, S.; Wang, L. Preparation and thermal properties of microencapsulated phase change material for enhancing fluid flow heat transfer Heat Trans. Asian Res. 2007, 36 (1) 28-37 10.1002/htj.20138
    • (2007) Heat Trans. Asian Res. , vol.36 , Issue.1 , pp. 28-37
    • Rao, Y.1    Lin, G.2    Luo, Y.3    Chen, S.4    Wang, L.5
  • 36
    • 84960938798 scopus 로고    scopus 로고
    • An improved transient plane source method for measuring thermal conductivity of thin films: Deconvoluting thermal contact resistance
    • Ahadi, M.; Andisheh-Tadbir, M.; Tam, M.; Bahrami, M. An improved transient plane source method for measuring thermal conductivity of thin films: Deconvoluting thermal contact resistance Int. J. Heat Mass Transfer 2016, 96, 371-380 10.1016/j.ijheatmasstransfer.2016.01.037
    • (2016) Int. J. Heat Mass Transfer , vol.96 , pp. 371-380
    • Ahadi, M.1    Andisheh-Tadbir, M.2    Tam, M.3    Bahrami, M.4
  • 37
    • 68349121588 scopus 로고    scopus 로고
    • Preparation of n -tetradecane-containing microcapsules with different shell materials by phase separation method
    • Yang, R.; Zhang, Y.; Wang, X.; Zhang, Y.; Zhang, Q. Preparation of n -tetradecane-containing microcapsules with different shell materials by phase separation method Sol. Energy Mater. Sol. Cells 2009, 93 (10) 1817-1822 10.1016/j.solmat.2009.06.019
    • (2009) Sol. Energy Mater. Sol. Cells , vol.93 , Issue.10 , pp. 1817-1822
    • Yang, R.1    Zhang, Y.2    Wang, X.3    Zhang, Y.4    Zhang, Q.5


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.