Investigation of the launch time of NH3-H2O absorption chiller under different working condition
This study deals with the launch time of main characteristic of NH3-H 2O absorption chiller under different working condition. The aim of this work was about to scrutinize a lumped-parameter dynamic simulation of aqua-ammonia absorption chiller in addition to investigating the effect of subcooled li...
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| Veröffentlicht in: | Proceedings of the Institution of Mechanical Engineers. Part E, Journal of process mechanical engineering Journal of process mechanical engineering, 2020-02, Vol.234 (1), p.15-28 |
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| container_title | Proceedings of the Institution of Mechanical Engineers. Part E, Journal of process mechanical engineering |
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| creator | Ebrahimnataj Tiji, A Ramiar, A Ebrahimnataj, MR |
| description | This study deals with the launch time of main characteristic of NH3-H 2O absorption chiller under different working condition. The aim of this work was about to scrutinize a lumped-parameter dynamic simulation of aqua-ammonia absorption chiller in addition to investigating the effect of subcooled liquid at condenser/absorber outlet on absorption chiller’s key parameters launch time. Also, the effect of ambient temperature on absorption chiller’s key parameters’ launch time is studied. In order to determine the thermodynamic properties of the working fluid, the Engineering Equation Solver software is applied. By making a link between Engineering Equation Solver and MATLAB software, the differential equations are solved in the MATLAB software environment by fourth-order Rung–Kutta method. According to the result, increase of the sub-cool liquid temperature at condenser outlet has no effect on absorption chiller’s key parameters’ launch time. Besides, 10 ℃-increase in subcooled liquid temperature at the absorber outlet leads to decreasing the launch time of the coefficient of performance to 19.35%. The result shows that if cooling tower temperature goes from 22 ℃ to 30 ℃, launch time of the coefficient of performance rises by 10.43%, while evaporator heat transfer rate falls by 30%. To validate the dynamic model, the results deduced from numerical simulation are compared with peer steady–state results. |
| doi_str_mv | 10.1177/0954408919879871 |
| format | Article |
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The aim of this work was about to scrutinize a lumped-parameter dynamic simulation of aqua-ammonia absorption chiller in addition to investigating the effect of subcooled liquid at condenser/absorber outlet on absorption chiller’s key parameters launch time. Also, the effect of ambient temperature on absorption chiller’s key parameters’ launch time is studied. In order to determine the thermodynamic properties of the working fluid, the Engineering Equation Solver software is applied. By making a link between Engineering Equation Solver and MATLAB software, the differential equations are solved in the MATLAB software environment by fourth-order Rung–Kutta method. According to the result, increase of the sub-cool liquid temperature at condenser outlet has no effect on absorption chiller’s key parameters’ launch time. Besides, 10 ℃-increase in subcooled liquid temperature at the absorber outlet leads to decreasing the launch time of the coefficient of performance to 19.35%. The result shows that if cooling tower temperature goes from 22 ℃ to 30 ℃, launch time of the coefficient of performance rises by 10.43%, while evaporator heat transfer rate falls by 30%. To validate the dynamic model, the results deduced from numerical simulation are compared with peer steady–state results.</description><identifier>ISSN: 0954-4089</identifier><identifier>EISSN: 2041-3009</identifier><identifier>DOI: 10.1177/0954408919879871</identifier><language>eng</language><publisher>London, England: SAGE Publications</publisher><subject>Absorbers ; Absorption ; Ambient temperature ; Ammonia ; Computer simulation ; Cooling ; Cooling towers ; Differential equations ; Dynamic models ; Evaporators ; Matlab ; Parameters ; Software ; Software engineering ; Thermodynamic properties ; Working fluids</subject><ispartof>Proceedings of the Institution of Mechanical Engineers. 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Part E, Journal of process mechanical engineering</title><description>This study deals with the launch time of main characteristic of NH3-H 2O absorption chiller under different working condition. The aim of this work was about to scrutinize a lumped-parameter dynamic simulation of aqua-ammonia absorption chiller in addition to investigating the effect of subcooled liquid at condenser/absorber outlet on absorption chiller’s key parameters launch time. Also, the effect of ambient temperature on absorption chiller’s key parameters’ launch time is studied. In order to determine the thermodynamic properties of the working fluid, the Engineering Equation Solver software is applied. By making a link between Engineering Equation Solver and MATLAB software, the differential equations are solved in the MATLAB software environment by fourth-order Rung–Kutta method. According to the result, increase of the sub-cool liquid temperature at condenser outlet has no effect on absorption chiller’s key parameters’ launch time. Besides, 10 ℃-increase in subcooled liquid temperature at the absorber outlet leads to decreasing the launch time of the coefficient of performance to 19.35%. The result shows that if cooling tower temperature goes from 22 ℃ to 30 ℃, launch time of the coefficient of performance rises by 10.43%, while evaporator heat transfer rate falls by 30%. To validate the dynamic model, the results deduced from numerical simulation are compared with peer steady–state results.</description><subject>Absorbers</subject><subject>Absorption</subject><subject>Ambient temperature</subject><subject>Ammonia</subject><subject>Computer simulation</subject><subject>Cooling</subject><subject>Cooling towers</subject><subject>Differential equations</subject><subject>Dynamic models</subject><subject>Evaporators</subject><subject>Matlab</subject><subject>Parameters</subject><subject>Software</subject><subject>Software engineering</subject><subject>Thermodynamic properties</subject><subject>Working fluids</subject><issn>0954-4089</issn><issn>2041-3009</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNpdkE1LAzEQhoMoWKt3jwHP0cwmu9kcpagtFHvR85omkzZ1Tep-6N_vrhUEh2EG5n2YYV5CroHfAih1x3UuJS816FINCSdkknEJTHCuT8lklNmon5OLtt3xISRXE_K2iF_YdmFjupAiTZ52W6S16aPd0i584Dh6ngs2z1bUrNvU7H9Auw11jQ3toxuqC95jg7Gj36l5D3FDbYoujOQlOfOmbvHqt0_J6-PDy2zOlqunxex-yfZZITpmjBCmKA2Ayzl6rpS0ufK50dpJRONtYZyQHDGzzisEIVFbV6xLARwgF1Nyc9y7b9JnP7xU7VLfxOFklQlZZlAUGgaKHanWbPCPAF6NJlb_TRQHW8ZkgQ</recordid><startdate>202002</startdate><enddate>202002</enddate><creator>Ebrahimnataj Tiji, A</creator><creator>Ramiar, A</creator><creator>Ebrahimnataj, MR</creator><general>SAGE Publications</general><general>SAGE PUBLICATIONS, INC</general><scope>7TB</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><orcidid>https://orcid.org/0000-0001-9913-6562</orcidid></search><sort><creationdate>202002</creationdate><title>Investigation of the launch time of NH3-H2O absorption chiller under different working condition</title><author>Ebrahimnataj Tiji, A ; Ramiar, A ; Ebrahimnataj, MR</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p263t-aa33a68a11d50ef0774c57f5a99d4eeafc6ad340ee2cdf7e134e9cd6b83101153</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Absorbers</topic><topic>Absorption</topic><topic>Ambient temperature</topic><topic>Ammonia</topic><topic>Computer simulation</topic><topic>Cooling</topic><topic>Cooling towers</topic><topic>Differential equations</topic><topic>Dynamic models</topic><topic>Evaporators</topic><topic>Matlab</topic><topic>Parameters</topic><topic>Software</topic><topic>Software engineering</topic><topic>Thermodynamic properties</topic><topic>Working fluids</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ebrahimnataj Tiji, A</creatorcontrib><creatorcontrib>Ramiar, A</creatorcontrib><creatorcontrib>Ebrahimnataj, MR</creatorcontrib><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>Proceedings of the Institution of Mechanical Engineers. Part E, Journal of process mechanical engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ebrahimnataj Tiji, A</au><au>Ramiar, A</au><au>Ebrahimnataj, MR</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigation of the launch time of NH3-H2O absorption chiller under different working condition</atitle><jtitle>Proceedings of the Institution of Mechanical Engineers. Part E, Journal of process mechanical engineering</jtitle><date>2020-02</date><risdate>2020</risdate><volume>234</volume><issue>1</issue><spage>15</spage><epage>28</epage><pages>15-28</pages><issn>0954-4089</issn><eissn>2041-3009</eissn><abstract>This study deals with the launch time of main characteristic of NH3-H 2O absorption chiller under different working condition. The aim of this work was about to scrutinize a lumped-parameter dynamic simulation of aqua-ammonia absorption chiller in addition to investigating the effect of subcooled liquid at condenser/absorber outlet on absorption chiller’s key parameters launch time. Also, the effect of ambient temperature on absorption chiller’s key parameters’ launch time is studied. In order to determine the thermodynamic properties of the working fluid, the Engineering Equation Solver software is applied. By making a link between Engineering Equation Solver and MATLAB software, the differential equations are solved in the MATLAB software environment by fourth-order Rung–Kutta method. According to the result, increase of the sub-cool liquid temperature at condenser outlet has no effect on absorption chiller’s key parameters’ launch time. Besides, 10 ℃-increase in subcooled liquid temperature at the absorber outlet leads to decreasing the launch time of the coefficient of performance to 19.35%. The result shows that if cooling tower temperature goes from 22 ℃ to 30 ℃, launch time of the coefficient of performance rises by 10.43%, while evaporator heat transfer rate falls by 30%. To validate the dynamic model, the results deduced from numerical simulation are compared with peer steady–state results.</abstract><cop>London, England</cop><pub>SAGE Publications</pub><doi>10.1177/0954408919879871</doi><tpages>14</tpages><orcidid>https://orcid.org/0000-0001-9913-6562</orcidid><oa>free_for_read</oa></addata></record> |
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| issn | 0954-4089 2041-3009 |
| language | eng |
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| source | SAGE Complete A-Z List |
| subjects | Absorbers Absorption Ambient temperature Ammonia Computer simulation Cooling Cooling towers Differential equations Dynamic models Evaporators Matlab Parameters Software Software engineering Thermodynamic properties Working fluids |
| title | Investigation of the launch time of NH3-H2O absorption chiller under different working condition |
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