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* : [email protected] : ! 18 / 12 / 96 ! :() 26 / 09 / 97 90 50 1 1399 109 - 116 "# $# %&$’ %&()’ * +$, %’ -$ .’$# /$0# -’* 147 34 5) 6 7 8 9: /: % * ,- .,- /0 12 3 -4 5 - 6 <=’ $> 7 7 5 3 -4 .,- /0 12 ,- 6 , 89: ; < = .> .>,5 3 ?@ 90 - A . 0 BC 147 ;E F5 BAG .- 7 ? ?@ I . 3? 6 J; K- 6 7 LG . M9J N< F 7 O ;G P ?@ A .; 7 . 5 Q- 3 .R F L O F S .- -: ; 2 TUJ2 ?@ U T,4G J .>,5 9AV WX .>,5 F; ; . .5 ?@ K- A TY ; P -: R . 5 /- Q- 3 .; ; -; P ; E =2; W ; F; =A ?@ .R 24 VAG .; Q- 3 .; K- J .>,5 =A =2; W ; =ZAR .7 R2 . VAG N .R 7 -; [ .R L . . &’* %? %. : @ ? .>,5 F; 9AV WX .> .>,5 89: ;G . \] A . Experimental analysis of Energy and exergy three-stage compression refrigeration cycle in unit 147 of south pars gas complex Department of Mechanical Engineering, Hakim Sabzevari University, Sabzevar, Iran M. Deymi-Dashtbayaz Department of Mechanical Engineering, Hakim sabzevari university, Sabzevar, Iran J. Etminan Abstract In this paper, an experimental analysis of exergy and energy for a three-stage compression refrigeration cycle that located in unit 147 of south pars gas company has been investigated. In the cycle, vapor of propane cools with the propane refrigerant. Experimental results that recorded from different points of the cycle are collected for all days in a year. After recording of temperature, pressure mass flow of refrigerant, and thermodynamic calculation of the cycle specification, the variation of temperature, pressure and flow rates of different cycles, exergy efficiency, operating coefficient, exergy of equipment destruction, consumption and heat input into the cycle, and the results as a medium diagram Monthly in a year. According to the results, the highest and lowest values of efficiency observed in months of July and April, respectively. Also, the highest and lowest average values of exergy was obtained for a series of expansion valves and suction drum sets for one year. Keywords: Compression refrigeration cycle, Experimental study, Exergy analysis, Energy, Exergy efficiency. 1 - B ^^9? .^^R [^^J; \^^Y ^^A4 [^^< ^^ ^ ^ ^_ ^U )^‘ ^ ^ .41 .G ] 1 [ . =^^ZAR ^^?@ ^^a ^^; . ^^90 ^^@ /^^ ^^ .^^R ^5 ^ ^C _^- ^ ^ \^Y ^5 ] 2 [ . ^ ^7 ^ bc^a A^- ^; . ^90 ^@ /^- .^^7; M\^^X ^^2 A^^C ^^@ ^^ . ^^; /^^- =^^ ^; ^ .4; 6 W ^?@ ^ . ^90 3^ .^R ^^R 1^^2d e^^U? ^^; \^^Y 6 F . ^^90 _^- 4E^ 8^;C ^a ^; ^R .)^ ^25F; [R 4E 3^^ .>^^ f^^U .^^7 ^^ ^^?@ ; ^^A ^^ ^^] . .^^UC ^^4; ^^; A<^^ ^^?@ 8^^ =^^AR ^^; . 6^^- 8C^^0 ^^; ^^4E ^^R .G^^E 61^^2Rg .^R .>^ f^U 6, [,^ ^; ^E ^; ^X0 ^UV K^: W^J ^R ^,R [,^ 6 Q^ ^; .>^ .^X< ^d W^J =^F ^ 67 L5 F 6F . ^; .^ F^ .>^^ F ^^4; _^^- ^^0 ^^ T,^^4G ^^ ^7 ^ ] 3 [ . ^; 8^9: ^,G (.>^) Q 6^C fc^? ^; .)^ ^25F; 6,^ =^\ (.>,^5) L 6^C ^- ^9AV ^4; ; ,A ^?@ O^ ^; ^ ^ ] 6^^ .^^- ^^ ^^9AV ;^^F ^^F .^^F T^^\ ^?@ ^- ^7 L^G ^;G T^Y ^; ^ .?^ ^X .>,^5 .>^ 89: ; 6AR ^?@ 3^ ;)^E ^ .^R ;)^^E ^^ ^^O - ^^; =^^ZAR ^^R 6 .^^? ^^E fc^ 6,^ ^; ^> ^ ^J .^ T^l ^-; ,^5 .>,^5 F^; .> ^? ^7 ^ .^R ^?@ ] 4 [ . K^^: .>^^ .>,^^5 8^^9: ^^; 6^^AR ^^cE G^^- F _^- ^F ^?@ ^A ^ .^R - ^2 ;)^E ^^? .^G .^R ] 5 [ . ^^; ^^_C ^Y [^^J; n^^X ^X 3^^>,5 8^^9: ^^?@ ^^R 6 .^^? ;)^^E ^^ ,^ L^ 3^A ^; ^I =^ .^; EES Matlab ^4; ^;

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Page 1: Tabriz-etminan(5) -clean

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Experimental analysis of Energy and exergy three-stage compression refrigeration cycle in unit 147 of south pars gas complex

Department of Mechanical Engineering, Hakim Sabzevari University, Sabzevar, Iran M. Deymi-Dashtbayaz

Department of Mechanical Engineering, Hakim sabzevari university, Sabzevar, Iran J. Etminan

Abstract In this paper, an experimental analysis of exergy and energy for a three-stage compression refrigeration cycle that located in unit 147 of south pars gas company has been investigated. In the cycle, vapor of propane cools with the propane refrigerant. Experimental results that recorded from different points of the cycle are collected for all days in a year. After recording of temperature, pressure mass flow of refrigerant, and thermodynamic calculation of the cycle specification, the variation of temperature, pressure and flow rates of different cycles, exergy efficiency, operating coefficient, exergy of equipment destruction, consumption and heat input into the cycle, and the results as a medium diagram Monthly in a year. According to the results, the highest and lowest values of efficiency observed in months of July and April, respectively. Also, the highest and lowest average values of exergy was obtained for a series of expansion valves and suction drum sets for one year. Keywords: Compression refrigeration cycle, Experimental study, Exergy analysis, Energy, Exergy efficiency.

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