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1. Refrigerant - 12 as saturated vapor at 0.5 MPa is isentropically compressed by a compressor in a refrigeration plant to 0.9 MPa. Determine the enthalpy change for the process and the final fluid phase.
2. What is the quality and internal energy of 0.1 lb m of steam contained in a 1.3 ft
3. Container at a temperature of 233 ° F? 3. Air enters the combustion of a jet aircraft engine at 800 kPa and 600 K and exits at 2200 K. Since an ideal combustion cha mber is isobaric, determine the entropy change and exit specific volume.
4. Ten grams of water at 15 C and 100 kPa completely fills a balloon. The balloon is then heated on the stove top at constant pressure until the temperature reaches 125 ° C. Determine the boundary work in kJ involved in this process. What is the boundary power, if the process takes 700 seconds?
a rigid tank which has a volume of 0.1 m3 contains 1kg of water at 100 celcius. a 3kwatt heater is energized until the
a geothermal power plant utilizes steam produced by natural means underground. steam wells are drilled to tap this
apply the first law of thermodynamica eq 1 to a finite volume element in a stationary solid. let rt be the temperature
a rectangular loop of wire with sides 0.19 and 0.32 m lies in a plane perpendicular to a constant magnetic field see
a baloon rises with a constant velocity.a load is tied by a rope to the basket. when the baloon is at altitude h0 the
draw a block diagram for a closed-loop room temperature control system consisting of a space heater with a single
a supply of steam at 100 kpa 150degc is needed in a hospital for cleaning purposes at a rate of 15 kgs. a supply of
a structural member is subjected to combined loading so that the fallowing stress occur at a critical point 100 50 40
a mechanic is reinstalling a newly-sharpened blade on a lawn mower. a wedged-in block of wood at c prevents the blade
A Closed, Rigid tank contains a two-phase liquid-vapor mixture of Refrigerant 22 initially at -20oC with a quality of 50.36%. Energy Transfer by heat into the tank occurs until the refrigerant is at a final pressure of 6 bars. Determine the final tem..
the reservoir pressure and temperature for a blowdown supersonic wind tunnel are 7.5 atm and 800 deg r respectively.
a steam power plant has a high pressure of 3mpa and it maintains 60c in the condenser. a condensing turbine is used but
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