Example 38.1:Exergy for Open Systems Steam Given: T1=400C CV P1=30 bars Surroundings:T=300 K,po=1 bar Find: e Shaft work output per kg of steam Maximum possible work output per kg of steam for the given inlet and outlet states T2=120C P2=1 bar Irreversibilities of the expansion process Theoretical work output per kg of steam for isentropic expansion process to final pressure Assumptions: SSSF ● △KE=△PE=0 。Adiabatic 上游充通大 April 30,2019 8 SHANGHAI JLAO TONG UNIVERSITYApril 30, 2019 8 Example 38.1: Exergy for Open Systems Given: Find: • Shaft work output per kg of steam • Maximum possible work output per kg of steam for the given inlet and outlet states • Irreversibilities of the expansion process • Theoretical work output per kg of steam for isentropic expansion process to final pressure Assumptions: • SSSF • ΔKE= ΔPE=0 • Adiabatic . WT CV Steam T1=400oC p1=30 bars T2=120oC p2=1 bar Surroundings:To=300 K,po=1 bar