Brayton Cycles
Q: Water flows through a pipe of varying diameter, A to B and then to C. The ratio of A to C is 8: 3.…
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Q: Homework: Draw shearing stress distribution of the critical section? 500kN H 12mm 150mm 12mm 276mm…
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Q: 7–102_A liquid delivery system is being designed such that ethylene glycol flows out of a hole in…
A: Given Data The temperature of ethylene glycol in prototype tank is:T=60° The kinematic viscocity of…
Q: Find the pressure of a liquid in pipe of specific gravity 0.8 as shown in Fig. P.1.13.12. (Specific…
A: As shown in the question, we must calculate the pressure of a liquid in a pipe with a specific…
Q: Q1 (a) Define the following phrase; External forces i. ii. Forces generated by motion Forces…
A: External force - it is a force which is applied by an external agent on a body or particle. Example…
Q: Q.3 A Carnot cycle heat pump operates with R134a as the refrigerant. The condenser and evaporator…
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Q: 1. A boiler feed pump receives 45 li/s of water at 190°C and enthalpy of 839.33 kJ/kg. It operates…
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Q: = Q2/ If positive M of 20kN.m is applied, draw the bending stress distribution. Est 200GPa and EAlu…
A: Explanation: First, convert the steel section into the equivalent wooden section using the modular…
Q: the ground worldwide as 356,000 quads, how long will it take to exhaust our fossil resources,…
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Q: Q2. For a specific spring where the load applied is 100 N, coil diameter is 4 mm, spring diameter is…
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Q: 1.) Type of specifications include _______ and ________. (ME Laws)
A: As per policy, first question is answered: There are mainly two types of specifications: (1)…
Q: Q.5 A standard vapor compression cycle uses R134a as the refrigerant. The condensing and evaporating…
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Q: 16) Earing is a type of defect, usually found in 17) Tension is the only type of stress applied in…
A: we have to fill in the blanks
Q: س۱ : اوجد محصلة منظومة القوى المتلاقية في الشكل ادناه
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Q: H.WA pipe bend has a cross sectional area of 0.01 m² at inlet and 0.0025 m² at outlet. It bends 90°…
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Q: If the mass of cylinder A is 40 kg. determine the mass of cylinder C in order to hold the assembly…
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Q: The pressure drop per meter length in a smooth horizontal tube in a turbulent flow depends on the…
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Q: Q2/ find the outcome of the cove -Q2/ find the outcome of the convergent forces system in the figure…
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Q: A large stainless-steel plate (k = 10 W/m.°C) has a thickness of 2 cm. Due to the electricity…
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Q: Q9/ Steam initially at 10 bar and 0.25 dryness fraction (i.e. quality = 85%). Expands down to p2 =…
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Q: The bucket is hoisted by the rope that wraps around a drum wheel. If the angular displacement of the…
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Q: Air flow through an electrically heated 0.5 cm diameter tube, 0.5 m long, entering at 110 oC. The…
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Q: A sports car travels along a straight road with an acceleration-deceleration described by the graph.…
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Q: Refrigerant 134a enters the condenser of arefrigeration cycle at Sookpa and bod with a flow rate of…
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Q: Q.1) For the figure given below, a force P in kN determine the following. a. The location of maximum…
A: For solution refer below images.
Q: 6) is a sheet metal forming process performed by placing a sheet-metal blank over a die cavity and…
A: Only four multiple questions are allowed to solve.
Q: Q3. For a closed end cylinder where the inner radius is 20 mm and outer radius is 40 mm, and the…
A: inner radius = 20 mm outer radius = 40 mm internal pressure = 5 Mpa. find maximum and minimum…
Q: The beam is subjected to the uniform distributed load shown. Draw the shear and moment diagrams for…
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Q: 76335 Find the the fundamental natural frequency of a beam using the static deflection curve where…
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Q: find area between line y=-2+x and y=x^(1/2) and x-axis 26/4 O 23/6 O 36/2 O
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Q: Two balls A and B, having a mass of 600 g and 1 kg, respectively, collide with the velocities shown…
A: given data mass of ball A = 600 g mass of ball B = 1 kg e = 0.8
Q: Q4/ One mole of an ideal gas, initially at 20°C and 1 bar, undergoes the following mechanically…
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Q: The steady-state response is the part of the Total Response which does not approach infinity as time…
A: The amplitude of steady-state response remains unchanged and does dependent on time.
Q: Q3. For a closed end cylinder where the inner radius is 20 mm and outer radius is 40 mm, and the…
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Q: Solve the given problems. 4. Determine the x, y, z components of reaction at the ball-and-socket…
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Q: If the value of Reynolds number is less than 2000 the flow is called ...................flow steady…
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Q: Q1: For the simply supported beam of the cross sectional dimensions and load shown in the figure,…
A: For equilibriu Net forces in Y direction should be zero Rc+Rd = 40 also net moment at any given…
Q: 2. what is the reduction ratio, if D.-94mm, this means r=47mm=0.047m If pressure (P) = 45Mpa (45*106…
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Q: Q.6 A vapor compression cycle uses R134a as the refrigerant. The vapor condenses at 40°C and is…
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Q: A 11 in 40° B b E D a G 7 in 4 in F
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Q: A beam 1m long with dimensions b = 50 mm and d = 100 mm is subjected to a load of 500 kgs as shown.…
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Q: Compute for the moments of inertia and radius of gyration of the shaded area with respect to the x-y…
A: Draw the given diagram with segments.
Q: 2. what is the reduction ratio, if D-94mm, this means r=47mm=0.047m If pressure (P) = 45Mpa (45*10*…
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Q: Determine the no. of independent variables that shall be specified, in order to define the close…
A: The number of independent variables require in order to specify a pure substance with the condition…
Q: The high temperature evaporator (Refrigeration capacity 5 TR) of a multi-evaporator VCR system,…
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Q: The tape shown slides around two fixed pegs each of radius 30 mm as shown. If T1 = (0.1P in newton)…
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Q: B/Choose the correct answers for the following: 1- Consider the following advantages offered by…
A: Ans - C All metals irrespective of their electrical conductivity can be cut.
Q: A Moving to another question will save this response. tion 5 What is the ratio of the centrifugal…
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Q: Q6/ Isolated vessel of total volume = 3.5m³ has two partition equal in volume A& B. Partition A has…
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Q: Consider a steam power plant that operates on the regenerative Rankine cycle w one open feedwater…
A: INTRODUCTION: A turbine is a device that generates work by expanding intake steam. When…
Topic: Brayton Cycles
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- HMW-2 In a closed cycle gas turbine, there is two stage compressor and two-stage turbine. All the components are mounted on the same shaft. The pressure and temperature of air at inlet to the first stage compressor are 1.5 bar and 20°C respectively. The maximum cycle pressure and temperature are limited to 750°C and 6 bar. A perfect intercooling and reheating are used between the compressors and the turbines. A regenerator whose effectiveness is 0.7 was employed. Assuming the compressors and turbines efficiencies as 0.82, calculate: a. Thermal efficiency of the cycle. b. Mass of working fluid for a power output of 350 kW. Assume the working fluid is air has Cp 1.005 kJ/kg K, y = 1.4.A gas turbine power plant operating on an ideal brayton cycle has a pressure ratio of 8. The gas temperature is 320k at the compressor inlet and 1400k at the turbine inlet. Using the air-standard assumptions, determines: 1. The back work raio 2. The temperature at the exits of the turbine and exits of the compressor 3. The thermal efficiency in decimalsConsider an air-standard Otto cycle that has a compression ratio of 8 and a heat addition of 1330 kJ/kg. If the pressure and temperature at the beginning of the compression process are 0.1 MPa and 70 °C, determine Match each item to a choice: Q the maximum pressure for the cycle, the net work output, in kJ/kg, the maximum temperature for the cycle the mean effective pressure,
- A compression ratio of 8 is achieved by using an ideal air-standard Otto cycle engine. The working fluid has a pressure of 100 kPa and a temperature of 27°C at the start of the compression process, and the constant volume heat addition process supplies 800 kJ/kg of heat to the working fluid. What are the (a )the temperature, volume and pressure of the air at the end of each process (in K, m3 and kPa) (b) the net work output/cycle [kJ/kg], and (c) the thermal efficiency of this engine cycleAn air-standard Compression Ignition cycle has a compression ratio of 18.2. Air is at 3200°R at the end of the heat addition process. Neglecting the variation of specific heats with temperature, determine the following: a. Cut-off ratio b. Net output work of the cycle Heat rejection per unit mass, Btu/lb d. Thermal efficiency of the cycle(%). Compare this efficiency value if the cycle has to run on an air standard Carnot Cycle.In a marine gas turbine unit, a high-pressure stage turbine drives the compressor and a low-pressure stage turbine drives the propeller through suitable gearing. The overall pressure ratio is 4/1 and the maximum temperature is 650 oC. the isentropic efficiencies of the compressor, H. P. turbine, L. P. turbine are 0.8, 0.83 and 0.85 respectively and the mechanical efficiency of both shafts is 98 %. Sketch the process on the T-s diagram Calculate the pressure between turbine stages when the air intake conditions are 1.01 bar and 25 oC. Calculate also the thermal efficiency and the shaft power when the mass flow is 60 kg/s. NB: Neglect kinetic energy changes and the pressure loss in combustion.
- 28. In a marine gas turbine unit a high-pressure stage turbine drives the compressor, and a low-pressure stage turbine drives the propeller through suitable gearing. The overall pressure ratio is 4: 1, and the maximum temperature is 650°C. The isentropic efficiencies of the compressor, H.P. turbine, and L.P. turbine are 0.8, 0.83, and 0.85 respectively, and the mechanical efficiency of both shafts is 98%. Calculate the pressure between turbine stages when the air intake conditions are 1.01 bar and 25°C. Calculate also the thermal efficiency and the shaft power when the mass flow is 60 kg/s. Neglect kinetic energy changes, and pressure [Ans. 1.57 bar; 14.9% ; 4560 kW) loss in combustion.To approximate an actual spark-ignition engine, consider an air-standard Otto cycle that has a heat addition of 1800 kJ/kg of air, a compression ratio of 8, and a pressure and temperature at the beginning of the compression process of 90 kPa, 10 degrees Centigrade. Determine the pressure, volume and temperature of the cycle, the thermal efficiency of the cycle, and the mean effective pressure. WITH ILLUSTRATIONSAt the beginning of the compression process of an air standard dual cycle with a compression ratio of 18, p = 100 kPa and T = 300 K. The pressure ratio for the constant volume part of the heating process is 1.5 and the volume ratio of the constant pressure part is 1.2.Determine (a) PVT relations(b) the thermal efficiency and (c) the MEP.
- Required information Problem 09.014 - 3-Step Air-Standard Cycle with Variable Specific Heats - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS An air-standard cycle with variable specific heats is executed in a closed system with 0.0025 kg of air and consists of the following three processes: 1-2 v= Constant heat addition from 95 kPa and 17°C to 380 kPa 2-3 Isentropic expansion to 95 kPa 3-1 P = Constant heat rejection to initial state Use data from tables. Problem 09.014.c - Cycle Efficiency for Variable Heat Capacity Air-Standard Cycle Determine the thermal efficiency. The thermal efficiency is %.! Required information Problem 09.034 - Ideal Otto Cycle with Variable Specific Heats - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95 kPa and 27°C, and 760 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Take into account the variation of specific heats with temperature. The gas constant of air is R = 0.287 kJ/kg-K. Problem 09.034.a - State After Heat Addition in Variable Heat Capacity Ideal Otto Cycle Determine the pressure and temperature at the end of the heat-addition process. (You must provide an answer before moving on to the next part.) The pressure at the end of the heat-addition process is 3915.8 kPa. The temperature at the end of the heat-addition process is 1647.7 K.! Required information Problem 09.015 - 3-Step Air-Standard Cycle with Constant Specific Heats - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS An air-standard cycle with constant specific heats at room temperature is executed in a closed system with 0.003 kg of air and consists of the following three processes: 1-2 v= Constant heat addition from 95 kPa and 17°C to 380 kPa 2-3 Isentropic expansion to 95 kPa 3-1 P=Constant heat rejection to initial state The properties of air at room temperature are cp=1.005 kJ/kg-K, cv=0.718 kJ/kg-K, and k=1.4. Problem 09.015.a - P-v and T-s Diagrams for Constant Heat Capacity Air-Standard Cycle Show the cycle on P-v and T-s diagrams. (Please upload your response/solution using the controls provided below.) (You must provide an answer before moving on to the next part.) upload a response file (15MB max) Browse... No file selected. save