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Category > Engineering Posted 19 Jun 2017 My Price 3.00

Paper is being dried with recirculating air in a two-stagedrying system operating at 1 atm

 

Paper is being dried with recirculating air in a two-stagedrying system operating at 1 atm. The air enters the first dryer at180"F, where the air is adiabatically saturated with moisture. Theair is then reheated in a heat exchanger to 174°F before entering thesecond dryer, where the air is adiabatically humidified to 80% rela-tive humidity. The air is then cooled to 60°F in a second heatexchanger, causing some of the moisture to be condensed. This isfollowed by a third heater to heat the air to 1 80°F before it returnsto the first dryer
 
 

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Alpha Geek
(8)
Status NEW Posted 19 Jun 2017 09:06 AM My Price 3.00

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file 1497867382-Answer.docx preview (121 words )
A-----------nsw-----------er ----------- pa-----------per----------- is----------- be-----------ing----------- dr-----------ied----------- wi-----------th -----------rec-----------irc-----------ula-----------tin-----------g a-----------ir -----------P =----------- 1 -----------atm----------- , -----------t =----------- 18-----------0 o----------- F -----------Vap-----------our----------- pr-----------ess-----------ure----------- - -----------Pv -----------Hum-----------idi-----------ty -----------at -----------180----------- oF----------- = -----------( 3-----------.71-----------8 ------------ 3.-----------281----------- ) -----------/ (----------- 15-----------0 ------------145----------- ) -----------* (----------- 18-----------0 ------------150----------- ) -----------+ 3-----------.71-----------8 =-----------6.3-----------4 P-----------v =----------- 6.-----------34 -----------psi-----------a h-----------umi-----------dit-----------y =----------- 0.-----------216----------- + -----------( 0-----------.21-----------6 ------------0.1-----------81 -----------) /----------- ( -----------150----------- -1-----------45 -----------) *----------- ( -----------180----------- -1-----------50 -----------) =----------- 0.-----------426----------- lb----------- wa-----------ter----------- / -----------lb -----------of -----------dry----------- ai-----------r a-----------t 1-----------80 -----------oF -----------, p-----------res-----------ure----------- va-----------pou-----------r =----------- Pv----------- = -----------6.3-----------4 p-----------sia----------- hu-----------mid-----------ity----------- = -----------0.4-----------26 -----------lb -----------of -----------wat-----------er -----------/lb----------- 0f----------- dr-----------y a-----------ir -----------at -----------174----------- oF----------- , -----------hs -----------= 0-----------.21-----------6 +----------- ( -----------0.2-----------16 ------------ 0-----------.18-----------1 )----------- / -----------(15-----------0
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