Engineering

Engineering, 04.07.2019 19:20, jimena15

The quality is zero at a)-the saturated vapour state b)-the saturated liquid state c)-the saturated liquid-vapour mixture state d)-none of the states in the other answers

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Engineering, 03.07.2019 14:10, BardiFan

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

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Engineering, 11.07.2019 01:30, adantrujillo1234

Sketch the phase diagram for water at constant pressure. label the critical point, saturated liquid line, and saturated vapor line, identify the following regions subcooled/compressed liquid, vapour liquid mixture and superheated.

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Engineering, 07.08.2019 18:30, jakebuttone

Steam at a pressure of 10 bar and a quality of 45% initially fills a rigid vessel having a volume of 4.5 m3. the steam is then heated, causing the pressure in the vessel to rise to 20 bar a. i. find the initial specific volume of the steam in the vessel ii. determine the total mass of the steam in the vessel ii. find the initial specific volume of the steam in the vessel after the heating process iv. identify from the table, the saturated vapour specific volume after the heating process v. compare the specific volume in part (a)(iii) and part (a) (iv) vi. decide the findings from part (a)(v) whether it is compressed liquid saturated mixture or superheated vii. determine the quality of the steam after the heating process. viii. identify from the table, the temperature of the steam after the heating process. ix. compute the mass of the vapour, ms and liquid, mr in the vessel after the heating process if the steam in the vessel is now further heated until all steam has turned into saturated vapour, what would the specific volume be? x. xi. estimate through interpolation the pressure and temperature in the xii. sketch the overall processes on p-v and t-v diagrams, indicating clearly xiii. recheck all of your answer and indicate the unit appropriately vessel at the final state the state, specific volume, temperatures, pressures and the paths

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Engineering, 14.09.2019 01:30, goargrant

A400 l closed rigid tank initially contains 2.06 kg of saturated liquid-vapor mixture of water at 50c (state 1). heat transfer occurs slowly to the tank until the final state is either saturated liquid or saturated vapor (state 2). (a) determine whether the final state is saturated liquid or saturated vapor. justify your answer with appropriate calculation. (b) calculate heat transfer (kj) during the process. (c) show the heating process on p-v diagram. label states, show property values, and indicate appropriate lines of constant temperature. (d) will the final state be saturated liquid or saturated vapor if the tank volume were to be 4 l? justify your answer with appropriate calculation.

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