Visvesvaraya Technological University (VTU) 2007 B.E Chemical Engineering Chemical Engg Thermodynamics - Question Paper

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Fourth sem B.E degree exam July 2007
Chemical Engg Thermodynamics

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Fourth Semester fc E. Degree Examination, July 200

Ch .nical Engineering Chomlcal En( leering Thermodynamics

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I a. Lxptain

t) C'IomO ml open tyuem

ti> Adiabatic and itolaicd

tit) RcvcmNc md inevcrvhle process**

iv) tMthennal and aduhitic pnxcucf. (* wriM

b One mok of gti in a cIomxJ and wxvflow syitem un&rgocs a 4-ep ihernxxljtuaiK: cycle

Cn*lnici two mi titilrBhmSnir Onelfle to *ho* e*juabom ued to calculate the mum iWt for tnrMnf ituontiticnnd the 2 table to write (He calculated nufnerkalflduefl m M

Show thei Energy baiafcetloMES!)' - ute JWroce for open tjncin is fives by.

AH* jA<r 0* Wj iliMfkw

A turbine operating under wcady Haw eooditioru receive* 5000 kf scam per hour The noun enter* at a vdociiy of 3000 m/mm, ai an elevation of 5 re and ipeciftc enthalpy 2777 kM* h learn the turbine at a \locit> of600 m'min and an elevation of 1 m and specific cnihal; y 2252 kJg Ileal toucs from turbine to urroundicig jnwunu io 16680 kJV$ D- rrruae HP output of the tu/binc. Now I HP 743.7 W

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Stale and prow ⁿCmot Theorem' iijvmlm

Explain Lost Work" conccpi ( Mk*i

a. Sute anti prove CUutiut Inequality. Hi Mn*>

b. A heat pump i iaed to hctt a building dunng winter. The Knldtnf i W be maintained 21*C at all timev The btnkfang Use* heat at the rwe ofl J5000 IJ'h. when outtide temperature drop* to *5'C Determine minimum power required to

drive the beat pump (or lh <Kiti<ie temperature.

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a. Explain the principle of entropy increatc h. Diicuts the 'Third Law of Therm odynamnV

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I'age Au . 2 CH4J

5 c. Sublimation prevsum of ¹o(id cMortne art 3 The vapot pressure* of liquid chlorine are 15 Calculate

i) AH (tuMimalion).

ii) AH (vaporization) tit) AlHfwkm)

fc a. Derive the four Maxwell'* equation* for a pm ifouncc.

at -I ire and >5 Pa at -12*.5C. Pa at -100'C and 7834 Pa at -SO'C

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show that if du CvdT. Ii

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Derive Gtbbt-Duhem equation font funcUmc' 11k activity coefficient* data for a binary col arc cocretaied M.

tor,

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at fixed ternperature and pressure

2

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X a. Derive (he

Acclic acid i* e*tenfied tn the liquid phat according to

CTIjCOOH (/) CjHjOll (ft CHjCOOC, The feed ccmi*U of 1.0 mo) of cach of acf fraction of elhyl acelale in the meting: mi*h> formation and standard free energy of formati*

j CHiCOCHI il> C;H?OH <Q CT

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