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6022 kJ/kg · K. 5 kJ/kg. 28b reduces to give se = si. 906), and m˙ = 141,714 kg/hr. 2. 2. 2. 4). Solution. 2 Open feedwater heater. 2. 2 provides steady-state operating data for an open feedwater heater. Ignoring heat transfer and kinetic/potential energy effects, determine the ratio of mass flow rates, m˙ 1 / m˙ 2 . Solution. , Moran and Shapiro, 2000). 30b) The specific volume remains approximately constant in many applications with liquids. 30c) rev When the states visited by a unit of mass flowing without irreversibilities from inlet to outlet are described by a continuous curve on a plot of temperature vs.

However, were the system restored to its initial state, it would not also be possible to return the surroundings to their initial state. There are many effects whose presence during a process renders it irreversible. These include, but are not limited to, the following: heat transfer through a finite temperature difference; unrestrained expansion of a gas or liquid to a lower pressure; spontaneous chemical reaction; mixing of matter at different compositions or states; friction (sliding friction as well as friction in the flow of fluids); electric current flow through a resistance; magnetization or polarization with hysteresis; and inelastic deformation.

Solution. 27c is appropriate. Solving, m˙ = W˙ cv /(hi − he ). 6022 kJ/kg · K. 5 kJ/kg. 28b reduces to give se = si. 906), and m˙ = 141,714 kg/hr. 2. 2. 2. 4). Solution. 2 Open feedwater heater. 2. 2 provides steady-state operating data for an open feedwater heater. Ignoring heat transfer and kinetic/potential energy effects, determine the ratio of mass flow rates, m˙ 1 / m˙ 2 . Solution. , Moran and Shapiro, 2000). 30b) The specific volume remains approximately constant in many applications with liquids.

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