Experimental investigation on discharging characteristics of supercooled CH

Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Wang, Huili [verfasserIn] Zhou, Guobing [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	Local cooling Crystallization Latent heat thermal storage Supercooled salt hydrate Binary mixture Experiment

Übergeordnetes Werk:	Enthalten in: Solar energy - Amsterdam [u.a.] : Elsevier Science, 1957, 217, Seite 263-270
Übergeordnetes Werk:	volume:217 ; pages:263-270

DOI / URN:	10.1016/j.solener.2021.02.010

Katalog-ID:	ELV005697956

Internformat


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245	1	0	\|a Experimental investigation on discharging characteristics of supercooled CH
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520			\|a Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials.
650		4	\|a Local cooling
650		4	\|a Crystallization
650		4	\|a Latent heat thermal storage
650		4	\|a Supercooled salt hydrate
650		4	\|a Binary mixture
650		4	\|a Experiment
700	1		\|a Zhou, Guobing \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Solar energy \|d Amsterdam [u.a.] : Elsevier Science, 1957 \|g 217, Seite 263-270 \|h Online-Ressource \|w (DE-627)320525597 \|w (DE-600)2015126-3 \|w (DE-576)096806648 \|x 1471-1257 \|7 nnns
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Indexfelder

author_variant	h w hw g z gz
matchkey_str	article:14711257:2021----::xeietlnetgtoodshrighrceit
hierarchy_sort_str	2021
bklnumber	52.56
publishDate	2021
allfields	10.1016/j.solener.2021.02.010 doi (DE-627)ELV005697956 (ELSEVIER)S0038-092X(21)00111-0 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Wang, Huili verfasserin aut Experimental investigation on discharging characteristics of supercooled CH 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials. Local cooling Crystallization Latent heat thermal storage Supercooled salt hydrate Binary mixture Experiment Zhou, Guobing verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 217, Seite 263-270 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:217 pages:263-270 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 217 263-270
spelling	10.1016/j.solener.2021.02.010 doi (DE-627)ELV005697956 (ELSEVIER)S0038-092X(21)00111-0 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Wang, Huili verfasserin aut Experimental investigation on discharging characteristics of supercooled CH 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials. Local cooling Crystallization Latent heat thermal storage Supercooled salt hydrate Binary mixture Experiment Zhou, Guobing verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 217, Seite 263-270 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:217 pages:263-270 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 217 263-270
allfields_unstemmed	10.1016/j.solener.2021.02.010 doi (DE-627)ELV005697956 (ELSEVIER)S0038-092X(21)00111-0 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Wang, Huili verfasserin aut Experimental investigation on discharging characteristics of supercooled CH 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials. Local cooling Crystallization Latent heat thermal storage Supercooled salt hydrate Binary mixture Experiment Zhou, Guobing verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 217, Seite 263-270 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:217 pages:263-270 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 217 263-270
allfieldsGer	10.1016/j.solener.2021.02.010 doi (DE-627)ELV005697956 (ELSEVIER)S0038-092X(21)00111-0 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Wang, Huili verfasserin aut Experimental investigation on discharging characteristics of supercooled CH 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials. Local cooling Crystallization Latent heat thermal storage Supercooled salt hydrate Binary mixture Experiment Zhou, Guobing verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 217, Seite 263-270 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:217 pages:263-270 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 217 263-270
allfieldsSound	10.1016/j.solener.2021.02.010 doi (DE-627)ELV005697956 (ELSEVIER)S0038-092X(21)00111-0 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Wang, Huili verfasserin aut Experimental investigation on discharging characteristics of supercooled CH 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials. Local cooling Crystallization Latent heat thermal storage Supercooled salt hydrate Binary mixture Experiment Zhou, Guobing verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 217, Seite 263-270 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:217 pages:263-270 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 217 263-270
language	English
source	Enthalten in Solar energy 217, Seite 263-270 volume:217 pages:263-270
sourceStr	Enthalten in Solar energy 217, Seite 263-270 volume:217 pages:263-270
format_phy_str_mv	Article
bklname	Regenerative Energieformen alternative Energieformen
institution	findex.gbv.de
topic_facet	Local cooling Crystallization Latent heat thermal storage Supercooled salt hydrate Binary mixture Experiment
dewey-raw	530
isfreeaccess_bool	false
container_title	Solar energy
authorswithroles_txt_mv	Wang, Huili @@aut@@ Zhou, Guobing @@aut@@
publishDateDaySort_date	2021-01-01T00:00:00Z
hierarchy_top_id	320525597
dewey-sort	3530
id	ELV005697956
language_de	englisch
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In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. 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author	Wang, Huili
spellingShingle	Wang, Huili ddc 530 bkl 52.56 misc Local cooling misc Crystallization misc Latent heat thermal storage misc Supercooled salt hydrate misc Binary mixture misc Experiment Experimental investigation on discharging characteristics of supercooled CH
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topic_title	530 DE-600 52.56 bkl Experimental investigation on discharging characteristics of supercooled CH Local cooling Crystallization Latent heat thermal storage Supercooled salt hydrate Binary mixture Experiment
topic	ddc 530 bkl 52.56 misc Local cooling misc Crystallization misc Latent heat thermal storage misc Supercooled salt hydrate misc Binary mixture misc Experiment
topic_unstemmed	ddc 530 bkl 52.56 misc Local cooling misc Crystallization misc Latent heat thermal storage misc Supercooled salt hydrate misc Binary mixture misc Experiment
topic_browse	ddc 530 bkl 52.56 misc Local cooling misc Crystallization misc Latent heat thermal storage misc Supercooled salt hydrate misc Binary mixture misc Experiment
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title	Experimental investigation on discharging characteristics of supercooled CH
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title_full	Experimental investigation on discharging characteristics of supercooled CH
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author_browse	Wang, Huili Zhou, Guobing
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doi_str_mv	10.1016/j.solener.2021.02.010
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title_sort	experimental investigation on discharging characteristics of supercooled ch
title_auth	Experimental investigation on discharging characteristics of supercooled CH
abstract	Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials.
abstractGer	Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials.
abstract_unstemmed	Latent heat stored in the supercooled salt hydrate liquid can be released at the desired time by triggered crystallization. In this paper, the melted sodium acetate trihydrate (SAT, melting point T m = 55.7 °C) and sodium thiosulfate pentahydrate (STP, T m = 48.9 °C) are cooled by natural convection of room air with respective supercooling degrees of 33 °C and 28 °C. Experiments are performed on the effect of local cooling by semiconductor refrigerator on triggering crystallization of supercooled SAT, STP and their binary mixtures with different mass ratios. The results show that SAT has higher discharging temperature and longer discharging time than STP; but STP has less phase separation, better cycling stability and shorter induction period during the crystallization than SAT after repeated melting-freezing cycles. Moreover, the phase separation problem of SAT could be significantly alleviated with the addition of STP. With the increase of SAT content in the SAT-STP mixtures, the induction period during the crystallization tends to firstly increase and then decrease. The tested curve of the maximum discharging temperatures presents as a V-shaped trend and roughly corresponds with the binary phase diagram. The eutectic mixture of SAT-STP (m SAT:m STP = 28:72, the eutectic temperature of 40.8 °C) can be triggered in 4 min and shows a discharging temperature peak measured at 39 °C. The discharging time of 3.3 h with temperature above 30 °C is longer than that of single-component salt hydrates. The obtained results are helpful for system design and practical application of solar energy storage based on supercooled phase change materials.
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title_short	Experimental investigation on discharging characteristics of supercooled CH
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doi_str	10.1016/j.solener.2021.02.010
up_date	2024-07-06T18:51:14.507Z
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Experimental investigation on discharging characteristics of supercooled CH

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