Psychrometric Project

Psychrometric Project - #X8.596#&...

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Unformatted text preview: #X8.596#& D#D#Q###"Refrigeration Analysis" # p_low = Pressure(R22,T=T_5,x=1) p_high = Pressure(R22,T=T_7,x=0) p W_dot_in = (490*3.413)/3600 [Btu/s] W T_4 = 45 T_5 = T_4 T_6 = Temperature(R22,S=s_6,P=p_high) T_7 = 140 T h_5 = enthalpy(R22,T=T_5,x=1) h_6 = enthalpy(R22,T=T_6,P=p_high) h_7 = enthalpy(R22,T=T_7,x=0) h s_5 = entropy(R22,T=T_5,x=1) s_6=s_5 s "Evaporator" 0 = Q_dot_12 + m_dot_refrig*(h_4-h_5) "Compressor" 0 = W_dot_in + m_dot_refrig*(h_5-h_6) "Condenser" 0 = m_dot_refrig*(h_6-h_7) - Q_dot_67 "Expansion Valve" h_4 = h_7 h "Dehumidifier Analysis" " m_dot_a = (118/60)/v_a1 m v_a1 = Volume(air,T=T_in,P=p_a1) v p_in = 1 p phi_1 = .5 phi_3 = .35 p T_in = 70 T_2 = T_4 T_out = 75 T "Conservation of mass" 0 = m_dot_a1 - m_dot_a2 m_dot_a1 = m_dot_a m_dot_vapor1 = omega_1*m_dot_a m_dot_vapor2 = omega_2*m_dot_a m phi_1 = p_vapor1/p_g1 phi_3 = p_vapor3/p_g3 p h_a1 = enthalpy(air,T=T_in) h_vapor1 = enthalpy(water,T=T_in,P=p_vapor1) h_water = enthalpy(water,T=T_2,x=1) h_a3 = enthalpy(air,T=T_out) h_vapor3 = enthalpy(water,T=T_out,P=p_vapor3) h p_a1 = p_in - p_vapor1 p_g1 = Pressure(water,T=T_in,x=1) p_vapor2 = Pressure(water,T=T_2,x=1) p_g2 = Pressure(water,T=T_2,x=1) p_vapor3 = p_vapor2 p omega_1 = 0.622*(p_vapor1/(p_in-p_vapor1)) omega_2 = 0.622*(p_vapor2/(p_in-p_vapor2)) omega_2=omega_3 omega_3 = m_dot_vapor3/m_dot_a o "Conservation 1-3" 0 = m_dot_a*(h_a1-h_a3) + m_dot_vapor1*h_vapor1 - m_dot_vapor3*h_vapor3 - m_dot_water*h_water + (Q_dot_67-Q_dot_12) m {$ID$ #2406: For use in the Department of Mechanical Engineering, Iowa State University Zibrowski}######(,h&T5&?################il#7?&6A_p&?# #############?OpD&hOpDhs####*#&#G#&#i#&#p#&#&#8##&##t#########I? OpD&hOpD&hs#######&####R#&#t#&#{#&##&######### &? OpDbhOpD&hs####F###&#/#&##&####&# X## #######&? OpD&hOpD&hs##### X## X#. X#A X#T X#v X#} X# #######&?OpD0hOpD&hs####<#&#C#X#R####&##&#. #] #& #######&?OpD&hOpD&hs####m&#w&####& ###0########&? OpD&hOpD&hs####(##0#&#8##@# &#D#&#N#&#R#&#\########&? OpD&hOpD&hs####Btu/lbm##m#9#m#H#m#k#m##m#7########&? OpD&hOpD&hs####9#m#]#m##m##m##m##m#>#m#E########&? OpD&hOpD&hs####m#m##m##m###m#>#m##m###m#&########&? OpD&hOpD&hs#####m#m##m##m###m#;#m###m#&########&? OpD&hOpD&hs#####m# #m#~#m#,#m#L#m#i#m##m#########?OpD&hOpDhs#####0#### &####&## ##b#########&?OpDhOpD&hs#######&# #&##&#*#o#B#0#6#o#>########?OpD&hOpDvhs####^#{#n#0#r##|#&#&##b#&#&# ########## ?OpDXhOpDhs####psiaU#######u##+u]#######?...
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This note was uploaded on 08/18/2011 for the course ME 332 taught by Professor Feve during the Spring '08 term at Iowa State.

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Psychrometric Project - #X8.596#&...

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