A 0.6-m3 rigid tank is filled with saturated liquid water at 170 °C. A valve at the bottom of the tank is now opened, and one-half of the total mass is withdrawn from the tank in liquid form. Heat is transferred to water from a source of 210 °C so that the temperature in the tank remains constant. Determine (a) the amount of heat transfer and (b) the reversible work and exergy destruction for this process. Assume the surroundings to be at 25 °C and 100 kPa.
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001075 \, m^3/kg\) Initial volume of the tank, \(V = 0.6 \, m^3\) \(m_1 = V/v_1 = 0.6/0.001075 = 558.14 \, kg\) Show more…
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$8-74 \quad$ A $0.6-m^{3}$ rigid tank is filled with saturated liquid water at $170^{\circ} \mathrm{C}$. A valve at the bottom of the tank is now opened, and one-half of the total mass is withdrawn from the tank in liquid form. Heat is transferred to water from a source of $210^{\circ} \mathrm{C}$ so that the temperature in the tank remains constant. Determine $(a)$ the amount of heat transfer and $(b)$ the reversible work and exergy destruction for this process. Assume the surroundings to be at $25^{\circ} \mathrm{C}$ and $100 \mathrm{kPa}$.
A $0.18-\mathrm{m}^{3}$ rigid tank is filled with saturated liquid water at $120^{\circ} \mathrm{C}$. A valve at the bottom of the tank is now opened, and one-half of the total mass is withdrawn from the $\operatorname{tank}$ in the liquid form. Heat is transferred to water from a source at $230^{\circ} \mathrm{C}$ so that the temperature in the tank remains constant. Determine $(a)$ the amount of heat transfer and (b) the total entropy generation for this process.
Two rigid tanks are connected by a valve. Tank $\mathrm{A}$ is insulated and contains $0.3 \mathrm{m}^{3}$ of steam at $400 \mathrm{kPa}$ and 60 percent quality. Tank $\mathrm{B}$ is uninsulated and contains $2 \mathrm{kg}$ of steam at $200 \mathrm{kPa}$ and $250^{\circ} \mathrm{C}$. The valve is now opened, and steam flows from tank A to tank B until the pressure in tank A drops to 200 kPa. During this process $300 \mathrm{kJ}$ of heat is transferred from tank $\mathrm{B}$ to the surroundings at $17^{\circ} \mathrm{C}$. Assuming the steam remaining inside tank $\mathrm{A}$ to have undergone a reversible adiabatic process, determine ( $a$ ) the final temperature in each tank and $(b)$ the entropy generated during this process.
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