FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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Steam is generated at 4.10 Mpa and 440°C and condensation occurs at 0.105 MPa
a. For a Rankine engine operating between these limits, computethe thermal efficiency and the heat rate
b. Considering that a Rankine cycle occurs between same limits, determine QA, QR, Wnet and eth
c. What mass flow rate is required for a net output of 30 000 kW
Don't answer the given problem, just give me the schematic diagram and t-s diagram of the given problem
Consider a cylinder of a gasoline engine at the beginning of the compression cycle, duringwhich a fuel/air mixture (for our purposes mostly composed of nitrogen and oxygen, i.e.an ideal gas of diatomic molecules) at 300 K and 1 bar is compressed down to one-tenthvolume (compression ratio of 10:1). Assume that the compression is rapid so no heatexchange occurs with the environment. Calculate the pressure and the temperature ofthe compressed gas. In a diesel engine, the compression ratios are typically much higher;redo the same calculation with a compression ratio of 20:1.
The condensing pressure for a Rankine engine is 0.001325 MPavac. Calculate the following for steam flow rate = 16.3846 kg/sec of steam when the steam at the beginning of expansion is at 119.6 deg SH and 4.0 Mpaa. Draw the TS and equipment diagrams for the ideal and actual case and find for the following for the ideal case:
PV and TS diagrams of the cycle showing ideal and actual process lines
Heat rejected at condenser (KJ/sec). Ans.____________________________
Mass of cooling water in kg/sec if cp H2O = 4.18 KJ/kg-K, and inlet temp of water to condenser = 20 deg C, outlet temp is 35 deg C. Ans.___________________________
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- For Problem 2, What is the temperature at core turbine outlet? The power produced by the core turbine must equal the power into the core compressor; since we are assuming a perfect gas with the properties of air and treating the combustion as equivalent to a heat transfer, the temperature drop in the core turbine must equal the temperature rise in the core compressor. If the temperature of the gas leaving the combustor (i.e. entering the HP turbine) is 1450K, find the temperature at core turbine outlet and thence the pressure at outlet from the core turbine. Assume a turbine efficiency of 90%. (Neglect any pressure drop in the combustor.) Fan bypass stator LP Turbine LP Booster stoge Byposs jet Fan Core Rotor HP Compressor Combustor Core nozzte 2-stage HP turtine Byposs nozziearrow_forwardExample 4.5: Stem expands in a turbine from 25 bar and 300°C to a condenser pressare of 20 KPa. Evaluate the Rankine cycle efficiency. What is the efficiency if the initial tempprature of steam is 500°C instead of 300°C ? Now if the boiler pressure is increased to 60 bar maintaining the steam temperature at turbine inlet at 500°C, calculate the efficiency. Assume the condenser pressure to rmain constant in all the cases. n-25 bararrow_forwardAir is cooled and dehumidified at constant pressure as shown in the figure below. Heat removed by the cooling coil is 130kW. Find air mass flow rate, air volumetric flow rate, condensation flow rate and sketch al states in a psychrometric diagram . Use AirH20 as the working fluid PLEASE NOTE: T2 has a typo, it should be 16.7 degrees Centigrade, not 16.7 degrees Fahrenheit, and all temperatures should be in Centigradearrow_forward
- The condensing pressure for a Rankine engine is 0.001325 MPavac. Calculate the following for steam flow rate = 1 + (200/13) kg/sec of steam when the steam at the beginning of expansion is at 119.6 deg SH and 4.0 Mpaa. Draw the TS and equipment diagrams for the ideal and actual case and find for the following for the ideal case: PV and TS diagrams of the cycle showing ideal and actual process lines Heat rejected at condenser (KJ/sec). Ans.____________________________ Mass of cooling water in kg/sec if cp H2O = 4.18 KJ/kg-K, and inlet temp of water to condenser = 20 deg C, outlet temp is 35 deg C. Ans.____________________________ Rankine engine efficiency (%). Ans.____________________________ Cycle thermal efficiency ( %). Ans.____________________________arrow_forwardA reheater cycle is executed of 1kg steam expanding initially from 12.356 Mpa and 540.356oC. The reheater pressures are 2.5356 MPa and the steam leaves the reheater at 420.356oC. Condensation occurs at 0.02356 Mpa. Calculate W, ec and ee.arrow_forwardShow all elements of your design including the design calculations for the problem: When heating up a cold stream (5000 kg/h water) from 40ᵒC to 90ᵒC while cooling down a hot stream (5000 kg/h water) from 110ᵒC to 60ᵒC in AES exchangers, how many shells do you need?arrow_forward
- Please state assumptions and tables.arrow_forwarda steam turbine plant is supplied with steam at 15 bar and 400 degrees Celsius and exhaust at 0.022. calculate the final state of the steam after isentropic expansion be the isentropic work see the ranking rank and efficiency the the steam consumption in KG per kilowatt-hourarrow_forwardPlease show all the formulas used ,calculations and steps ... Answer for rate of availability distruction is 214 kw ..but I'm struggling to find itarrow_forward
- a boiler is producing steam at pressure of 15 bar and quality as 0.98 dry. If the water supplied through feed check valve is at 30°C ,what amount of heat the boiler is using in producing of 1 kg of steam? Also find the overall boiler efficiency in case it is observed that in one hour operation 1000 kg of steam is produced and 82.5 kg of fuel with calorific value = 35000KJ/kg is consumed.arrow_forwardPleae solve this problem and give an explanation of how you have picked up values from steam tables... Also explain how would we find enthalpy after fluid expansion in first turbinearrow_forwardThe condensing pressure for a Rankine Engine is 1.6 bar. 200°C and the steam at the beginning of expansion is at 3.75 Mpa, 400°C. Calculate the efficiency of cycle and engine using mollier chart. Can you show me the detailed step by step solution?arrow_forward
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