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A factory has a large liquid propane storage tank. The propane is to be used as vapor. Evaporation of the liquid propane at -42 oC into vapor requires an external heat transfer input of 777,000 kJ. A power cycle steadily generating 55 kW of electricity at thermal efficiency of 20% is installed to supply the required propane heat transfer. Heat transfer absorbed from the surrounding 300 K atmosphere completes the cycle. NOTE: The cycle absorbs heat transfer from the 300 K (hot) environment and heat is transferred into the (cold) propane.Include a complete schematic diagram in your write-up clearly showing hot (top) & cold (bottom) regions and arrows showing all energy exchanges. Find the elapsed time to vaporize the propane and total work produced. Also find theoretically maximum possible total work output for the given QCOLD, WREV,MAX.
a two cylinder engine with cranks at right angles developes 75 kw at mean speed 400 revmin.the coefficient of speed
a material element experiences 50 mpa compression in the x-direction 10 mpa tension in the y-direction and a negative
a 100 kva 3- phase star- connected transformer has a primary voltage of 11000 v and a secondary voltage of 440 v and it
a system carries crude oil of specific gravity 0.8. the volumetric flow rate at point 1 the inlet is 10 ft3s. branch 1
Finding exit velocity from air nozzle, Air enters a nozzle operating at steady state at 800 ºR with a negligible velocity and exits the nozzle at 570 ºR.
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car b turns such that its speed is increased by at0.5et ms2 where t is in sec. if the car starts from rests when theta0
the heat transfer coefficient for air flowing over a sphere is to be determined by observing the temperature -time
a pitot-static probe connected to a water manometer is used to measure the velocity of air. if the de?ection
If the minimum attractive rate of return is20% per year, determine the one machine that should be selected on the basis of a rate of return analysis.
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