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wrte the energy and entropy balances for the Heat Transfer Limited (HTL) Camot cycle. Assume the...
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.
Operating in series are two reversible heat pumps. Heat transfer gives energy to the first cycle...
Operating in series are two reversible heat pumps. Heat transfer
gives energy to the first cycle from a cold reservoir at 105 K and
rejects energy by heat transfer to a reservoir at an intermediate
temperature T greater than 105 K. The second cycle receives energy
by heat transfer from the reservoir at T and rejects energy by heat
transfer to a higher-temperature reservoir at 1200 K. If the heat
pump cycles have the same co-efficient of performance, calculate:
Low...
A reversible power cycle whose thermal efficiency is 40% receives 50 kJ by heat transfer from a...
A reversible power cycle whose thermal efficiency is 40% receives 50 kJ by heat transfer from a hot reservoir at 600 K and rejects energy by heat transfer to a coldreservoir at temperature Tc. Determine the energy rejected in KJ
A reversible power cycle whose thermal efficiency is 39% receives 50 kJ by heat transfer from a hot reservoir at 310oC...
A reversible power cycle whose thermal efficiency is 39% receives 50 kJ by heat transfer from a hot reservoir at 310oC and rejects energy by heat transfer to a cold reservoir at temperature TC. Determine the energy rejected, in kJ, and TC, in oC. Determine the entropy production for the cycle, σcycle, in kJ/K.
As shown in the figure, a reversible power cycle receives energy QH by heat transfer from...
As shown in the figure, a reversible power cycle receives energy
QH by heat transfer from a hot reservoir at TH and rejects energy
QC by heat transfer to a cold reservoir at TC.
a) If TH = 1600 K, TC = 400 K, what is the thermal
efficiency?
b) If TH = 500oC, TC = 20oC, and Wcycle = 1000 kJ, what are QH and
QC, each in kJ?
c) If ? = 60% and TC = 40oF, what...
Consider the Rankine cycle below with steam flow rate of 5kg/s. The steam receives heat from...
Consider the Rankine cycle below with steam flow rate of 5kg/s. The steam receives heat from the combustion gases in the furnace of the generator; assume the combustion gases change temperature from 2000°K to 425 K in flowing through the steam generator. The cooling water enters the condenser 20°C and leaves at 40°C. Assume the flow in the pump and the turbine is adiabatic and internally reversible. Also assume the combustion gas has the properties of air. If To is...
Problem 8.015 Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 lbf/in.2 and 1100℉ Due to heat transfer and frictional effects in the line connecting the steam ge...
Problem 8.015 Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 lbf/in.2 and 1100℉ Due to heat transfer and frictional effects in the line connecting the steam generator and turbine, the pressure and temperature at the turbine inlet are reduced to 1400 Ibf/in.2 and 1000 , respectively. Both the turbine and pump have isentropic efficiencies of 95%. Pressure at the condenser inlet is 2 lbf/ in.2, but due to frictional effects the condensate...
Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 lbf/in.2 and 1100°F. Due to heat transfer and frictional effects in the line connecting the steam generator and...
Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 lbf/in.2 and 1100°F. Due to heat transfer and frictional effects in the line connecting the steam generator and turbine, the pressure and temperature at the turbine inlet are reduced to 1400 lbf/in.2 and 1000°F, respectively. Both the turbine and pump have isentropic efficiencies of 95%. Pressure at the condenser inlet is 2 lbf/ in. 2, but due to frictional effects the condensate exits the...
pts per question) 1. A 2 m piston cylinder device contains nitroen gas at 200 kPa...
pts per question) 1. A 2 m piston cylinder device contains nitroen gas at 200 kPa and 350K. Now heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 900 kPa and volume is maintained at same. The boundary work done during this process is (a) 1080 kJ (b) 840 k (c)240 k 2. A heat engine receives heat from a source at 727°C and rejiects the waste heat to a sink at 27°C,...
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...
Operating in series are two reversible heat pumps. Heat transfer
gives energy to the first cycle from a cold reservoir at 105 K and
rejects energy by heat transfer to a reservoir at an intermediate
temperature T greater than 105 K. The second cycle receives energy
by heat transfer from the reservoir at T and rejects energy by heat
transfer to a higher-temperature reservoir at 1200 K. If the heat
pump cycles have the same co-efficient of performance, calculate:
Low...
As shown in the figure, a reversible power cycle receives energy
QH by heat transfer from a hot reservoir at TH and rejects energy
QC by heat transfer to a cold reservoir at TC.
a) If TH = 1600 K, TC = 400 K, what is the thermal
efficiency?
b) If TH = 500oC, TC = 20oC, and Wcycle = 1000 kJ, what are QH and
QC, each in kJ?
c) If ? = 60% and TC = 40oF, what...
Consider the Rankine cycle below with steam flow rate of 5kg/s. The steam receives heat from the combustion gases in the furnace of the generator; assume the combustion gases change temperature from 2000°K to 425 K in flowing through the steam generator. The cooling water enters the condenser 20°C and leaves at 40°C. Assume the flow in the pump and the turbine is adiabatic and internally reversible. Also assume the combustion gas has the properties of air. If To is...
Problem 8.015 Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 lbf/in.2 and 1100℉ Due to heat transfer and frictional effects in the line connecting the steam generator and turbine, the pressure and temperature at the turbine inlet are reduced to 1400 Ibf/in.2 and 1000 , respectively. Both the turbine and pump have isentropic efficiencies of 95%. Pressure at the condenser inlet is 2 lbf/ in.2, but due to frictional effects the condensate...
Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 lbf/in.2 and 1100°F. Due to heat transfer and frictional effects in the line connecting the steam generator and turbine, the pressure and temperature at the turbine inlet are reduced to 1400 lbf/in.2 and 1000°F, respectively. Both the turbine and pump have isentropic efficiencies of 95%. Pressure at the condenser inlet is 2 lbf/ in. 2, but due to frictional effects the condensate exits the...
pts per question) 1. A 2 m piston cylinder device contains nitroen gas at 200 kPa and 350K. Now heat is transferred to the nitrogen in the tank and the pressure of nitrogen rises to 900 kPa and volume is maintained at same. The boundary work done during this process is (a) 1080 kJ (b) 840 k (c)240 k 2. A heat engine receives heat from a source at 727°C and rejiects the waste heat to a sink at 27°C,...
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