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PS8 Solutions (AC_Design)

PS8 Solutions (AC_Design) - Special Problem Assigned in...

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Unformatted text preview: Special Problem Assigned in Class MAEi 15 Due Monday, November 24, 2008 Faii 2008 Design an air conditioning system with recirculation to meet the toiiowing requirements. Outside air is at 859’:: (BB) and a reiative humidity of 65%. The desired inlet conditions to the room are 650?: (BB) and a humidity ratio of 0.008. The room outlet conditioos are 79°F (88) and 65°F (W8). The mass ratio of return air to outside make-up air is 35f65. (a) Provide a "biock diagram" schematic of your air conditioning system, carefuiiy identifying each elementary psychrometric component; it cooling is required, show a schematic of the entire refrigeration system required to support the cooling. » (b) Piot the system process one "psychrdmetric chart and identity the CONDiTlON LINE. (0) For the eiementary psychrometric processes, caicuiate: i. The sensible cooling, it any [Btu/lbmda}. 2. The sensible heat input, if any [Btu/lbmda}. 3. The amount of water removed, it any {lhmw/lbmda}. (d) For the space, caicuiate: i. The enthalpy/moisture ratio [Btuflbmwi using the “protractor” method. 2. The enthalpy/moisture ratio [Btu/ibmw] by calcuiating directly. 3. The mass of moisture addition for a sensible heat input of 300 Btu/sec (Q-32 ), and 4. The mass flow rate of the dry air (lbmdalsec). (e) The electricity (kW—hr) required to power the elementary psychrometric components per day, and the monthly electricity cost for a rate of $0.1 Oka-hr. k . 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QQQQ; 3 QQQQQ QQQQQ Q ; 4% «w, Kgif g‘ 5,3339%; 5i E’E‘E‘ffi: gééi‘ES 5225:3215; EEEE§§¢EEE 5* 53:55? 5f fi§€§3§iéE§Eg£ 3532:5653? :5;ng ”g‘égg 33%g2fi i; g g g “EEEEE ‘9 g 53-; ‘E EEéEE-JEEE E E W”. ; 3;"; i vi 5% 7 _ g , 5%? “3‘ fiéggfififaéfi E” ‘” 3325:wa EEEEEEEEEE? i g * , E g EEEBEEEEE§E Erin: EEE EWEEEEEE 5215 Qégflj i a 392$?“ “5Q if: ‘15 53%, i633 @gagk 3.3% 5116335 EEEEE‘M’M €55“??? } g i Q :33‘eiwsége fiEEeE‘fE .EEé; $593535 gg; égfwggw'é‘ , y W $§%€“5%>”QSL W e i A 3'; 3 o a Eg’flf’éi’iwf 3; Egg; @EL :2 7 ,7 . , 2;; iéaE as: i» E E 4?; E’Efiwi , w géfiew 5% §§ Egg 3mg; ’ ( E i E 3 EEEEE EEEEEE Cf REE; EEEE; Vég‘é Egaéiakg Ea: giggyyigz E 1v ;é g \ 3 4%.“: Q 351*! ’2’; W: “W; ”‘5 55g x“ 553% “E a?" E ESEg ‘ ’ T E 3:3 g g: Egg; 5;; ,3: 3‘??? ”Ea; gag»? 2E5?! 392: fiaéfioogv‘“ CWgfifaawégg 1/;ng % wgfiééfv 5:33? 3 @ 5%? 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E E AWW-ww 9; g?” [awwxf‘gsgg E KW ”53 ggéL‘gLéiifi$§ M w” W C} {£535 LEM; fiw‘m' M5534!» E; EEEE W E: 3 2%»2325 22222222 2.22 E 32:22 a» m, WM )2??? W Wag nymf w 2.1 i 3 § g2? *" ,2222222222222222222222222223222Q22§§§2 2222; i 2 Engmeergs Gmmw’éa‘tim Pad NO. 93? 811E @fimmmfiw gag; gfiffinmgig 52g giggségééw 33 0522222 :2 2:» 2222:2222‘E {fifty} M ...
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