EXAMPLE 4.21 Energy Balance Ten pounds of water at 35°F, 4.00 lb of ice at 32°F, and 6.00 lb of steam at 250°F and 20 psia are mixed together in a container of fixed volume. What is the final...

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Extracted text: EXAMPLE 4.21 Energy Balance Ten pounds of water at 35°F, 4.00 lb of ice at 32°F, and 6.00 lb of steam at 250°F and 20 psia are mixed together in a container of fixed volume. What is the final temperature of the mix- ture? How much steam condenses? Assume that the volume of the vessel is constant with a value equal to the volume of the steam and that the vessel is insulated. Sec. 4.5 The General Energy Balance System boundary 10 Ib water Final Mixture 6 lb steam 4 ib ice Figure E4.21 AÂU (Btu/lb} p (psia) T (F) -143.6* 3.02 1168 Ice 32 35 Water 0.0162 20.81 Steam 20 250 *Heat of fusion (pressure and volume have no significant effect).