A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology

Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Tao, Wen [verfasserIn] Yimo, Luo [verfasserIn] Lin, Lu [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2019

Schlagwörter:	Falling film dehumidification Film shrinkage Contact angle Penetration theory 3D CFD simulation

Übergeordnetes Werk:	Enthalten in: Applied energy - Amsterdam [u.a.] : Elsevier Science, 1975, 240, Seite 486-498
Übergeordnetes Werk:	volume:240 ; pages:486-498

DOI / URN:	10.1016/j.apenergy.2019.02.068

Katalog-ID:	ELV002147122

Internformat


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024	7		\|a 10.1016/j.apenergy.2019.02.068 \|2 doi
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245	1	0	\|a A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology
264		1	\|c 2019
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520			\|a Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. Intense water vapor absorption occurred at the phase interface, resulting in large solution concentration gradient and humidity content in the zone near the air/liquid contact interface. However, minor mass transfer occurred in other zones mainly in the form of diffusion. Accordingly, several heat/mass transfer enhancement approaches, i.e. structural modifications and surface modification, were proposed to improve the flow turbulence and to enlarge the falling film wettability. The newly proposed 3D simulation model and dehumidification enhancement approaches are meaningful for the design and operation of liquid desiccant cooling system.
650		4	\|a Falling film dehumidification
650		4	\|a Film shrinkage
650		4	\|a Contact angle
650		4	\|a Penetration theory
650		4	\|a 3D CFD simulation
700	1		\|a Yimo, Luo \|e verfasserin \|4 aut
700	1		\|a Lin, Lu \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Applied energy \|d Amsterdam [u.a.] : Elsevier Science, 1975 \|g 240, Seite 486-498 \|h Online-Ressource \|w (DE-627)320406709 \|w (DE-600)2000772-3 \|w (DE-576)256140251 \|x 1872-9118 \|7 nnns
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936	b	k	\|a 52.50 \|j Energietechnik: Allgemeines
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Indexfelder

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matchkey_str	article:18729118:2019----::nvldiuainoefrnetgtnlqidscateuiiiainef
hierarchy_sort_str	2019
bklnumber	52.50
publishDate	2019
allfields	10.1016/j.apenergy.2019.02.068 doi (DE-627)ELV002147122 (ELSEVIER)S0306-2619(19)30365-4 DE-627 ger DE-627 rda eng 620 DE-600 52.50 bkl Tao, Wen verfasserin aut A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. Intense water vapor absorption occurred at the phase interface, resulting in large solution concentration gradient and humidity content in the zone near the air/liquid contact interface. However, minor mass transfer occurred in other zones mainly in the form of diffusion. Accordingly, several heat/mass transfer enhancement approaches, i.e. structural modifications and surface modification, were proposed to improve the flow turbulence and to enlarge the falling film wettability. The newly proposed 3D simulation model and dehumidification enhancement approaches are meaningful for the design and operation of liquid desiccant cooling system. Falling film dehumidification Film shrinkage Contact angle Penetration theory 3D CFD simulation Yimo, Luo verfasserin aut Lin, Lu verfasserin aut Enthalten in Applied energy Amsterdam [u.a.] : Elsevier Science, 1975 240, Seite 486-498 Online-Ressource (DE-627)320406709 (DE-600)2000772-3 (DE-576)256140251 1872-9118 nnns volume:240 pages:486-498 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_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_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_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.50 Energietechnik: Allgemeines AR 240 486-498
spelling	10.1016/j.apenergy.2019.02.068 doi (DE-627)ELV002147122 (ELSEVIER)S0306-2619(19)30365-4 DE-627 ger DE-627 rda eng 620 DE-600 52.50 bkl Tao, Wen verfasserin aut A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. Intense water vapor absorption occurred at the phase interface, resulting in large solution concentration gradient and humidity content in the zone near the air/liquid contact interface. However, minor mass transfer occurred in other zones mainly in the form of diffusion. Accordingly, several heat/mass transfer enhancement approaches, i.e. structural modifications and surface modification, were proposed to improve the flow turbulence and to enlarge the falling film wettability. The newly proposed 3D simulation model and dehumidification enhancement approaches are meaningful for the design and operation of liquid desiccant cooling system. Falling film dehumidification Film shrinkage Contact angle Penetration theory 3D CFD simulation Yimo, Luo verfasserin aut Lin, Lu verfasserin aut Enthalten in Applied energy Amsterdam [u.a.] : Elsevier Science, 1975 240, Seite 486-498 Online-Ressource (DE-627)320406709 (DE-600)2000772-3 (DE-576)256140251 1872-9118 nnns volume:240 pages:486-498 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_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_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_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.50 Energietechnik: Allgemeines AR 240 486-498
allfields_unstemmed	10.1016/j.apenergy.2019.02.068 doi (DE-627)ELV002147122 (ELSEVIER)S0306-2619(19)30365-4 DE-627 ger DE-627 rda eng 620 DE-600 52.50 bkl Tao, Wen verfasserin aut A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. Intense water vapor absorption occurred at the phase interface, resulting in large solution concentration gradient and humidity content in the zone near the air/liquid contact interface. However, minor mass transfer occurred in other zones mainly in the form of diffusion. Accordingly, several heat/mass transfer enhancement approaches, i.e. structural modifications and surface modification, were proposed to improve the flow turbulence and to enlarge the falling film wettability. The newly proposed 3D simulation model and dehumidification enhancement approaches are meaningful for the design and operation of liquid desiccant cooling system. Falling film dehumidification Film shrinkage Contact angle Penetration theory 3D CFD simulation Yimo, Luo verfasserin aut Lin, Lu verfasserin aut Enthalten in Applied energy Amsterdam [u.a.] : Elsevier Science, 1975 240, Seite 486-498 Online-Ressource (DE-627)320406709 (DE-600)2000772-3 (DE-576)256140251 1872-9118 nnns volume:240 pages:486-498 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_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_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_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.50 Energietechnik: Allgemeines AR 240 486-498
allfieldsGer	10.1016/j.apenergy.2019.02.068 doi (DE-627)ELV002147122 (ELSEVIER)S0306-2619(19)30365-4 DE-627 ger DE-627 rda eng 620 DE-600 52.50 bkl Tao, Wen verfasserin aut A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. Intense water vapor absorption occurred at the phase interface, resulting in large solution concentration gradient and humidity content in the zone near the air/liquid contact interface. However, minor mass transfer occurred in other zones mainly in the form of diffusion. Accordingly, several heat/mass transfer enhancement approaches, i.e. structural modifications and surface modification, were proposed to improve the flow turbulence and to enlarge the falling film wettability. The newly proposed 3D simulation model and dehumidification enhancement approaches are meaningful for the design and operation of liquid desiccant cooling system. Falling film dehumidification Film shrinkage Contact angle Penetration theory 3D CFD simulation Yimo, Luo verfasserin aut Lin, Lu verfasserin aut Enthalten in Applied energy Amsterdam [u.a.] : Elsevier Science, 1975 240, Seite 486-498 Online-Ressource (DE-627)320406709 (DE-600)2000772-3 (DE-576)256140251 1872-9118 nnns volume:240 pages:486-498 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_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_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_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.50 Energietechnik: Allgemeines AR 240 486-498
allfieldsSound	10.1016/j.apenergy.2019.02.068 doi (DE-627)ELV002147122 (ELSEVIER)S0306-2619(19)30365-4 DE-627 ger DE-627 rda eng 620 DE-600 52.50 bkl Tao, Wen verfasserin aut A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology 2019 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. Intense water vapor absorption occurred at the phase interface, resulting in large solution concentration gradient and humidity content in the zone near the air/liquid contact interface. However, minor mass transfer occurred in other zones mainly in the form of diffusion. Accordingly, several heat/mass transfer enhancement approaches, i.e. structural modifications and surface modification, were proposed to improve the flow turbulence and to enlarge the falling film wettability. The newly proposed 3D simulation model and dehumidification enhancement approaches are meaningful for the design and operation of liquid desiccant cooling system. Falling film dehumidification Film shrinkage Contact angle Penetration theory 3D CFD simulation Yimo, Luo verfasserin aut Lin, Lu verfasserin aut Enthalten in Applied energy Amsterdam [u.a.] : Elsevier Science, 1975 240, Seite 486-498 Online-Ressource (DE-627)320406709 (DE-600)2000772-3 (DE-576)256140251 1872-9118 nnns volume:240 pages:486-498 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_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_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_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.50 Energietechnik: Allgemeines AR 240 486-498
language	English
source	Enthalten in Applied energy 240, Seite 486-498 volume:240 pages:486-498
sourceStr	Enthalten in Applied energy 240, Seite 486-498 volume:240 pages:486-498
format_phy_str_mv	Article
bklname	Energietechnik: Allgemeines
institution	findex.gbv.de
topic_facet	Falling film dehumidification Film shrinkage Contact angle Penetration theory 3D CFD simulation
dewey-raw	620
isfreeaccess_bool	false
container_title	Applied energy
authorswithroles_txt_mv	Tao, Wen @@aut@@ Yimo, Luo @@aut@@ Lin, Lu @@aut@@
publishDateDaySort_date	2019-01-01T00:00:00Z
hierarchy_top_id	320406709
dewey-sort	3620
id	ELV002147122
language_de	englisch
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Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. 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author	Tao, Wen
spellingShingle	Tao, Wen ddc 620 bkl 52.50 misc Falling film dehumidification misc Film shrinkage misc Contact angle misc Penetration theory misc 3D CFD simulation A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology
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topic_title	620 DE-600 52.50 bkl A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology Falling film dehumidification Film shrinkage Contact angle Penetration theory 3D CFD simulation
topic	ddc 620 bkl 52.50 misc Falling film dehumidification misc Film shrinkage misc Contact angle misc Penetration theory misc 3D CFD simulation
topic_unstemmed	ddc 620 bkl 52.50 misc Falling film dehumidification misc Film shrinkage misc Contact angle misc Penetration theory misc 3D CFD simulation
topic_browse	ddc 620 bkl 52.50 misc Falling film dehumidification misc Film shrinkage misc Contact angle misc Penetration theory misc 3D CFD simulation
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title	A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology
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title_full	A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology
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title_sort	a novel 3d simulation model for investigating liquid desiccant dehumidification performance based on cfd technology
title_auth	A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology
abstract	Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. Intense water vapor absorption occurred at the phase interface, resulting in large solution concentration gradient and humidity content in the zone near the air/liquid contact interface. However, minor mass transfer occurred in other zones mainly in the form of diffusion. Accordingly, several heat/mass transfer enhancement approaches, i.e. structural modifications and surface modification, were proposed to improve the flow turbulence and to enlarge the falling film wettability. The newly proposed 3D simulation model and dehumidification enhancement approaches are meaningful for the design and operation of liquid desiccant cooling system.
abstractGer	Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. Intense water vapor absorption occurred at the phase interface, resulting in large solution concentration gradient and humidity content in the zone near the air/liquid contact interface. However, minor mass transfer occurred in other zones mainly in the form of diffusion. Accordingly, several heat/mass transfer enhancement approaches, i.e. structural modifications and surface modification, were proposed to improve the flow turbulence and to enlarge the falling film wettability. The newly proposed 3D simulation model and dehumidification enhancement approaches are meaningful for the design and operation of liquid desiccant cooling system.
abstract_unstemmed	Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was closely related with air humidity, velocity, solution temperature, centration, temperature and contact angle but seldom affected by air temperature. The simulation results also indicated that falling film of liquid desiccant shrank gradually along the flow direction, leading to an inhomogeneous water vapor absorption process in the dehumidifier. Intense water vapor absorption occurred at the phase interface, resulting in large solution concentration gradient and humidity content in the zone near the air/liquid contact interface. However, minor mass transfer occurred in other zones mainly in the form of diffusion. Accordingly, several heat/mass transfer enhancement approaches, i.e. structural modifications and surface modification, were proposed to improve the flow turbulence and to enlarge the falling film wettability. The newly proposed 3D simulation model and dehumidification enhancement approaches are meaningful for the design and operation of liquid desiccant cooling system.
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title_short	A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology
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up_date	2024-07-06T23:46:17.083Z
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A novel 3D simulation model for investigating liquid desiccant dehumidification performance based on CFD technology

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