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Q1// A closed rigid system has a volume of 80 litres contains steam at 2 bar and dryness fraction of 0.85. Calculate the quantity of heat which must be removed from the system in order to reduce the pressure to 1.0 bar. Also determine the change in enthalpy and entropy per unit mass of the system. Use tables in figure below.

Q1// A closed rigid system has a volume of 80 litres contains steam at 2 bar and dryness fraction of 0.85. Calculate the quantity of heat which must be removed from the system in order to reduce the pressure to 1.0 bar. Also determine the change in enthalpy and entropy per unit mass of the system. Use tables in figure below.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Q1// A closed rigid system has a volume of 80 litres contains steam at 2 bar and dryness fraction of 0.85. Calculate the quantity of heat which must be removed from the system in order to reduce the pressure to 1.0 bar. Also determine the change in enthalpy and entropy per unit mass of the system. Use tables in figure below. P= 0.2 Mpa (120.23 C) T, °C v, m'/kg u, kj/kg J, k/kg s, kJ/kg.K Sat. liquid 0.00106 504.5 504.7 1.53 Sat. vapour 0.8857 2529.5 2706.7 7.1272 P= 0.1 Mpa (99.63 °C) T, °C v, m'/kg u, kj/kg J, ki/kg s, k/kg.K Sat. liquid 0.00104 417.3 417.4 1.303 Sat. vapour 1.694 2506.1 2675.5 7.3594
Transcribed Image Text:Q1// A closed rigid system has a volume of 80 litres contains steam at 2 bar and dryness fraction of 0.85. Calculate the quantity of heat which must be removed from the system in order to reduce the pressure to 1.0 bar. Also determine the change in enthalpy and entropy per unit mass of the system. Use tables in figure below. P= 0.2 Mpa (120.23 C) T, °C v, m'/kg u, kj/kg J, k/kg s, kJ/kg.K Sat. liquid 0.00106 504.5 504.7 1.53 Sat. vapour 0.8857 2529.5 2706.7 7.1272 P= 0.1 Mpa (99.63 °C) T, °C v, m'/kg u, kj/kg J, ki/kg s, k/kg.K Sat. liquid 0.00104 417.3 417.4 1.303 Sat. vapour 1.694 2506.1 2675.5 7.3594
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