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d) sketch the cycle on p-V coordinates. 5.83 A system executes a power cycle while receiving...
A system executes a power cycle while receiving heat transfer at a temperature of 1000 K...
A system executes a power cycle while receiving heat transfer at a temperature of 1000 K and discharging 1000 kJ by heat transfer at a temperature of 450 K. There are ho other heat transfers. Appling the lausus Inequality, determine entropy generation, if the thermal efficiency is 50%. Also comment if the cycle is 15. Extra-credit (10 Pts.) reversible, irreversible, or impossible? Explain your reasoning. press entropy balance using heat engine efficiency in terms of O's. Remember this is not...
A system executes a power cycle while receiving 1050 kJ by heat transfer at a temperature of 525 K and discharging 700 kJ by heat transfer at 350 K.
Problem 2.3 (Clausius Inequality Applications) A system executes a power cycle while receiving 1050 kJ by heat transfer at a temperature of 525 K and discharging 700 kJ by heat transfer at 350 K. There are no other heat transfers (a) Using eq.5.13, determine whether the cycle is internally reversible, irreversible, or impossible. (b) Determine the thermal efficiency using eq.5.4 and the given heat transfer data. Compare this value with the Carnot efficiency calculated using eq.5.9 and comment.
A power cycle operating between two thermal reservoirs receives energy QH by heat transfer from a...
A power cycle operating between two thermal reservoirs receives energy QH by heat transfer from a hot reservoir at TH = 2000 K and rejects energy QC by heat transfer to a cold reservoir at TC = 400 K. For each of the following cases determine whether the cycle operates reversibly, operates irreversibly, or is impossible. (a) QH = 1000 kJ, ƞ = 60% (b) QH = 1000 kJ, Wcycle = 850 kJ (c) QH = 1000 kJ, QC =...
2. An ideal gas within a piston-cylinder assembly executes a Carnot power cycle. The isothermal compression...
2. An ideal gas within a piston-cylinder assembly executes a Carnot power cycle. The isothermal compression occurs at 300 K from 80 kPa to 110 kPa. If the thermal efficiency is 70% determine (30 points): P a. the temperature of the isothermal expansion, in K, and b. the network developed, in kJ per kmol of gas. Jooote Nmax = 1 - - - TW TA 70%=1-300x TA = 300 kdy cokela TH TH= loook - +10 A = With I...
Problem 1 (10 points). Consider a newly invented power cyclic device performing a power cycle whi...
Problem 1 (10 points). Consider a newly invented power cyclic device performing a power cycle while interacting with two thermal reservoirs. The device absorbs 2000 kJ from the hight temperature reservoir at 1000 K, and releases certain amount of heat to the low temperature reservoir at 500 K. Now consider three claims on its thermal efficiency or per ormance: η 70, η 0%, and Y-40%. (a, 4 points) Formulate the entropy production for the cyclic process in terms of the...
Air in a piston-cylinder assembly executes a Carnot power cycle (4 internally reversible processes, shown in...
Air in a piston-cylinder assembly executes a Carnot power cycle (4 internally reversible processes, shown in the figure below). The isothermal expansion and compression processes occur at TH 1400 K and Tc-350 K, respectively. The pressure at the beginning and end of the isothermal compression are p4-100 kPa and pi - 500 kPa, respectively Assume the ideal gas model for the air: ai 0.717 J/g.K Mair- 28.97 g/mol kpv.air 1.4 R 8.314J /(mol K) Adiabatic Isothermal expansion Adiabatic compression Gas...
A system executes a power cycle while receiving heat transfer at a temperature of 1000 K and discharging 1000 kJ by heat transfer at a temperature of 450 K. There are ho other heat transfers. Appling the lausus Inequality, determine entropy generation, if the thermal efficiency is 50%. Also comment if the cycle is 15. Extra-credit (10 Pts.) reversible, irreversible, or impossible? Explain your reasoning. press entropy balance using heat engine efficiency in terms of O's. Remember this is not...
2. An ideal gas within a piston-cylinder assembly executes a Carnot power cycle. The isothermal compression occurs at 300 K from 80 kPa to 110 kPa. If the thermal efficiency is 70% determine (30 points): P a. the temperature of the isothermal expansion, in K, and b. the network developed, in kJ per kmol of gas. Jooote Nmax = 1 - - - TW TA 70%=1-300x TA = 300 kdy cokela TH TH= loook - +10 A = With I...
Problem 1 (10 points). Consider a newly invented power cyclic device performing a power cycle while interacting with two thermal reservoirs. The device absorbs 2000 kJ from the hight temperature reservoir at 1000 K, and releases certain amount of heat to the low temperature reservoir at 500 K. Now consider three claims on its thermal efficiency or per ormance: η 70, η 0%, and Y-40%. (a, 4 points) Formulate the entropy production for the cyclic process in terms of the...
Air in a piston-cylinder assembly executes a Carnot power cycle (4 internally reversible processes, shown in the figure below). The isothermal expansion and compression processes occur at TH 1400 K and Tc-350 K, respectively. The pressure at the beginning and end of the isothermal compression are p4-100 kPa and pi - 500 kPa, respectively Assume the ideal gas model for the air: ai 0.717 J/g.K Mair- 28.97 g/mol kpv.air 1.4 R 8.314J /(mol K) Adiabatic Isothermal expansion Adiabatic compression Gas...
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