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methane gas is burned completely with 30 excess air at approximately atmospheric pressure both the methane and the air
ammonia gas enters the reactor of a nitric acid plant mixed with 30 more dry air than is required for the complete
a carnot engine receives 250 kw of heat from a heat-source reservoir at 79815 k 525degc and rejects heat to a heat-sink
a fuel gas consisting of 94 mole- methane and 6 mole- nitrogen is burned with 35 excess air in a continuous water
a fuel consisting of 75 mol- methane and 25 mol- ethane enters a furnace with 80 excess air at 30315 k 30degc if 800 gj
an inventor has devised a complicated non flow process in which 1 mol of air is the working fluid the net effects of
reversible adiabatic processes are isentropic are isentropic processes necessarily reversible and adiabatic if so
a device with no moving parts provides a steady stream of chilled air at 24815 k -25degc and 1 bar the feed to the
an electric motor under steady load draws 97 amperes at 110 volts it delivers 093 kw of mechanical energy the
consider the air conditioning of a house through use of solar energy at a particular location experiment has shown that
a list of common unit operations followsa single-pipe heat exchanger6 double-pipe heat exchangerc pumpd gas compressore
ten kmol per hour of air is throttled from upstream conditions of 29815 k 25degc and 10 bar to a downstream pressure of
the state of 1 kg of steam is changed from saturated vapor at 138 bar to superheated vapor at 15 bar and 81 115 k
a pressure vessel contains liquid water and water vapor in equilibrium at 45015 k 177degc the total mass of liquid and
a vessel of 2-m3 capacity contains 002 m3 of liquid water and 198 m3 of water vapor at 101325 kpa how much heat must be
steam at 2700 kpa and with a quality of 090 undergoes a reversible adiabatic expansion in a nonflow process to 400 ha
a steam turbine operating reversibly and adiabatically takes in superheated steam at 2000 wa and discharges at 50 kpaa
steam at 2100 kpa and 53315 k 260degc expands at constant enthalpy as in a throttling process to 125 kpa what is the
a vessel of 015-m3 volume containing saturated-vapor steam at 42315 k 150degc is cooled to 30315 k 30degc determine the
steam at 207 bar and 53315 k 260degc expands at constant enthalpy as in a throttling process to 138 bar what is the
steam at 2000 kpa containing 6 moisture is heated at constant pressure to 84815 k 575degc how much heat is required per
a pistonlcylinder device operating in a cycle with steam as the working fluid executes the following
steam entering a turbine at 4000 kpa and 67315 k 400degc expands reversibly and adiabaticallya for what discharge
an operating test of a steam turbine produces the following results with steam supplied to the turbine at 1350 wa and
determine the maximum amount of work obtainable in a flow process from 1 kg of steam at 3000 kpa and 72315 k 450degc