Required information Problem 09.114 - Regenerative Brayton Cycle with Effectiveness using Variable Specific Heats- DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS Air enters the compressor of a regenerative gas turbine engine at 310 K and 100 kPa, where it is compressed to 900 kPa and 650 K. The regenerator has an effectiveness of 78 percent, and the air enters the turbine at 1400 K. Assume variable specific heats for air. Problem 09.114.a - Regenerator Heat in a Gas-Turbine Engine Using Variable Heat Capacities For a turbine efficiency of 90 percent, determine the amount of heat transfer in the regenerator. (You must provide an answer before moving on to the next part.) The amount of heat transfer in the regenerator is kJ/kg.

Required information Problem 09.114 - Regenerative Brayton Cycle with Effectiveness using Variable Specific Heats- DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS Air enters the compressor of a regenerative gas turbine engine at 310 K and 100 kPa, where it is compressed to 900 kPa and 650 K. The regenerator has an effectiveness of 78 percent, and the air enters the turbine at 1400 K. Assume variable specific heats for air. Problem 09.114.a - Regenerator Heat in a Gas-Turbine Engine Using Variable Heat Capacities For a turbine efficiency of 90 percent, determine the amount of heat transfer in the regenerator. (You must provide an answer before moving on to the next part.) The amount of heat transfer in the regenerator is kJ/kg.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Required information Problem 09.114 - Regenerative Brayton Cycle with Effectiveness using Variable Specific Heats - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS Air enters the compressor of a regenerative gas turbine engine at 310 K and 100 kPa, where it is compressed to 900 kPa and 650 K. The regenerator has an effectiveness of 78 percent, and the air enters the turbine at 1400 K. Assume variable specific heats for air. Problem 09.114.b - Thermal Efficiency of a Gas-Turbine Engine Using Variable Heat Capacities For a turbine efficiency of 90 percent, determine the thermal efficiency. The thermal efficiency is %.
! Required information Problem 09.119C - Replacing Single-Stage Compression with Multistage Compression The single-stage compression process of an ideal Brayton cycle without regeneration is replaced by a multistage compression process with intercooling between the same pressure limits. Problem 09.119C.a - Effect of Multistage Compression on Compressor Work As a result of this modification, does the compressor work increase, decrease, or remain the same? Multiple Choice It will remain the same. It will increase. It will decrease.
! Required information Problem 09.119C - Replacing Single-Stage Compression with Multistage Compression The single-stage compression process of an ideal Brayton cycle without regeneration is replaced by a multistage compression process with intercooling between the same pressure limits. Problem 09.119C.c - Effect of Multistage Compression on Thermal Efficiency As a result of this modification, does the thermal efficiency increase, decrease, or remain the same? Multiple Choice It will remain the same. It will increase. It will decrease.
Air enters the compressor of a regenerative ideal air-standard Brayton cycle at 100kPa,300K, with a volumetric flow rate of 4 m3/s. The compressor pressure ratio is 8, theregenerator effectiveness is 75% and the turbine inlet temperature is 1300K.Determine:(a) The back work ratio.(b) The net power developed.(c) The thermal efficiency
Required information Problem 09.112 - Brayton Cycle with Regeneration using Variable Specific Heats - DEPENDENT MULTI- PART PROBLEM - ASSIGN ALL PARTS A Brayton cycle with regeneration using air as the working fluid has a pressure ratio of 7. The minimum and maximum temperatures in the cycle are 310 and 1150 K. Assume an isentropic efficiency of 75 percent for the compressor and 82 percent for the turbine and an effectiveness of 64 percent for the regenerator. Use variable specific heats for air. Problem 09.112.c - Thermal Efficiency Brayton Cycle with Regeneration Determine the thermal efficiency. The thermal efficiency is %.
Required information Problem 09.112 - Brayton Cycle with Regeneration using Variable Specific Heats - DEPENDENT MULTI- PART PROBLEM - ASSIGN ALL PARTS A Brayton cycle with regeneration using air as the working fluid has a pressure ratio of 7. The minimum and maximum temperatures in the cycle are 310 and 1150 K. Assume an isentropic efficiency of 75 percent for the compressor and 82 percent for the turbine and an effectiveness of 64 percent for the regenerator. Use variable specific heats for air. Problem 09.112.b - Net Work Produced by a Brayton Cycle with Regeneration Determine the net work output. (You must provide an answer before moving on to the next part.) The net work output is kJ/kg.
Your selection was a gas-turbine power plant operating on an ideal Brayton cycle and according to the manufacturing datasheets it has the following specifications: A pressure ratio of 14.77. The gas temperature is 350 K at the compressor inlet and 1500 K at the turbine inlet. Under the assumption of standard air, perform the following: 1. Gas temperature of the compressor and the turbine exits, 2. Back-work ratio, 1 , discuss any Wnet 3. Thermal efficiency using the formula nth and by formula nth = 1 qin (k-1)/k > differences and explain it.
An air-standard Spark Ignition cycle has a compression ratio of 10.2. Air is at 30000R at the end ofthe heat addition process. Neglecting the variation of specific heats with temperature, determine thefollowing:a. Net output work of the cycleb. Heat rejection per unit mass, Btu/lbc. Thermal efficiency of the cycle(%). Compare this efficiency value if the cycle has to run on an airstandard Carnot Cycle
Air enters the compressor of an Ideal Air Standard Brayton Cycle at 100kPa, 300K with a volume flow rate at 5m3/s. The compressor pressure ratio is 10. The turbine inlet temperature is 1400K, Determine: a. What is the back work ratiob. If the efficiency of the turbine and the compressor is 79%, Determine the back work ratioc. If the efficiency of the turbine and compressor efficiency is 85% and a regenerator efficiencyis 80%, what is the cycle efficiency
Air at 100 kPa, 300 K enters an ideal Otto cycle. The initial volume is 500 cm3. The compression ratio is 8.5, and the maximum temperature in the cycle is 2100 K. Using a cold-air standard analysis, determine the following:a. The heat addition (in kJ)b. The heat rejection (in kJ)c. The net work (in kJ)d. The cycle thermal efficiency
Consider an ideal Brayton cycle operating on air. The inlet to the compressor is 300 K, 100 kPa. The compressor and turbine pressure ratios are 10. The maximum temperature in the system is 2000 K. Treat the air as an ideal gas with constant specific heats. a. What is the efficiency of this cycle? (Note: see derivation in section 10.1) b. What would the efficiency be for a Carnot cycle operating between the same temperature limits? c. You should have found that the efficiency of this cycle is less than the Carnot efficiency. So, there must be some irreversibility and entropy generation. For each of the four processes (compressor, heat addition, turbine, heat rejection), find the entropy generation per kg of air. For this analysis, assume the best-case scenario – heat is transferred to the high-T heat exchanger from a reservoir at 2000 K and heat is removed from the low-T heat exchanger to a reservoir at 300 K. d. If entropy is generated during this cycle, where does it go? e. What is…
1. An ideal air-standard diesel cycle with inlet conditions: 21.11˚C and 14.7 psia, 700 Btu/lbm heat input, and a compression ratio of 15. Find P2, T2, T3, V3, P4, T4, and the efficiency of the cycle. Take Note: Assume air standard values for R and k Cp = kR/k-1 Cv = R/k-1 a. Find the value of P2. (in psi or lb/in^2) b. Find the value of T2. (in Rankine) c. Find the value of T3. (in Rankine) d. Find the value of V3. (in ft^3/lbm) e. Find the value of P4. (in psi or lb/in^2) f. Find the value of T4. (in Rankine) g. Find the value of efficiency of the cycle. (ex. 100-%)