Past ME Board The following coa C = 70.5 % S = 3.0% A stocker fired b fuel. Calculate th pressure if boiler A. 212,830 m³/h B. 342,987 m³/h
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- Read the question carefully before answering. Box or indicate your final ansurers when solving and draw your diagrams cleanly. Complete solution please. Use 2 decimal places when solving and for final answers. Draw the PV and TS diagram with proper label of points when required. 1. An Otto Cycle receives air at 101 kPa and 20c, then compresses it to 10% of the original volume. The max temperature of the air is 1050 K. Draw the PV and TS diagrams, and selve for the following: the remaining temperatures, QA, QR. Whet and efficiency.104#1. an ideal gas with R=0.062 BTU/lbm-degree R and Cv=0.158 BTU/lbm-degree R undergoes athree process cycle in a cklose system. from the initial state of 20 psia and 570degree R, the gas is compressed at coinstant pressure to 1/5 of its initial volume, process 1-2; it is then heated isochrocally to state 3, process 2-3; and finally, it expands polytopically with index n=1.5 back to its initial state, process 3-1. determine the pressure, specific volumes and temperatures at cardinal points around the cycle and the cycle thermal efficiency.(17 blanks) Calculate the efficiency of the Carnot Engine for ideal gas. Consider the figure below for a complete cycle of Carnot engine, where the cycle goes from ad->ab->bc->cd Carnot cycle Он TH Tc - V 02016 Pearson Education, Inc. processes: processes and segment ab & cd are the Where segments ad & bc are the and the volumes involved are Va, Vb, Vc, Vd, and the two temperatures TC and
- 贪411 461l1 zain IQ Asiacell M Superheating process .8 should exists for protecting the сycle. none of these answers. should not exist in the cycle to keep it working efficiently. is necessary to keep the refrigerant at low temperature. The refrigerant leaving the .7 compressor follows an isentropic process. an isothermal process. an adiabatic process an isotropic process. All specific physical quantities are .5 measured relative toSpecific Instruction: i.Drawaschematic diagramof each problem with labels of states of a substance;ii.For uniformity purposes, assign STATE 1 at the inlet of ahigh-pressure turbine.The states must be arranged in a chronologicalorder;iii.Ploteach cycle in a t-s diagramwith the states consistentto the states assignment in the schematic diagram;iv.Show a detailed solution 1.Consider a 200-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters the turbine at 8MPa and 400 0C and is cooled in the condenser at a pressure of 10 kPa. Determine (a) the quality of the steam at the turbine exit, and (b)themass flow rate of the steam.Thermodynamics (Brayton Cycle) Round up the answer up to 5 decimal places. A 120 MW gas turbine power plant running on Ideal Brayton cycle has the followinginitial conditions; air at 22°C & 95 kPa. The compression ratio is 7 and the temperature atthe turbine entrance is 910°C. Determine the following: a. Pressure & temperature at each stateb. T-S diagramc. Heat Added, per unit massd. Thermal Efficiencye. Mass flow rate, kg/min
- 2. For the gas system power illustrated in Figure 2 (with the air-standard analysis assumptions), calculate... 8 T₁ - 2100 K S=C SEC DMC UNC T₁ - 310 K T₂ - 2100 K Figure 2. Operating condition of a gas power system cycle (The P-V and T-S diagram) a. Thermal efficiency and mean effective pressure of the system b. What happens to the system if the compression ratio increases twice from the initial value? Explain and provide proof in the form of calculation!hello sir its in two parts Determine the amount of work required to compressed 1.5 kg of air at a pressure of 7 barg. The isentropic index is 1.2 and the air intake is at 1 bar, 200C & RH =65%. i) Find the temperature at the end of the compression. ii) Represent the above process on a p‐v diagram. iii) If the isentropic efficiency is 65%, find the indicated or real work. iv) Find the shaft work needed if the mechanical efficiency is 75%. v) The discharged air is passed through an R134a refrigerant dryer, the temperature of air coming out the dryer is 400C. The air then settles inside a reservoir at a temperature of 25 0C. Determine: The humidity variation throughout the production of compressed air The amount of condensate formed at each stage of the process by using The humidity definition The Atlas‐copco simplified formula,Compare your results If the system is in operation 8 hrs per day, 7 day a week; find the amount of condensate produced for a year.A diesel engine in a power plant has an output of 2000 KW at 1000 rpm. It uses fuel oil having a heating value of 42,000 KJ/kg. If the efficiency of the engine is 39.61%. Calculate the sp. gr. of the fuel used and the fuel consumption in barrels per month.
- I need correct answer in 20 minutes please Find the cycle efficiency and specific steam consumption of a reheat cycle (Fig. 2.7a) operating between pressures of 3 MPa and 0.004 MPa, with superheat temp of 450 °C. Assume that the first expansion is carried out to the point where the steam is dry saturated and then the steam is reheated to the original superheat temp. The feed pump term may be neglected Boiler Reheater a High-P turbine. P = Ps= Preheal Pump Condenser Low-P turbine Figure (2.7 a) High-pressure turbine Reheating Low-pressure turbineQ1) Steam is supplied to a turbine at 30 bar and 350°C. The turbine exhaust pressure is 0.08 bar. The main condensate is heated regeneratively in two stages by steam bled from the turbine at 5 bar and 1.0 bar respectively. Calculate masses of steam bled off at each pressure per kg of steam entering the turbine and the theoretical thermal efficiency of the сycle. 1 kg Turbine 1- m- m2 O 1-m, m,- m. Condenser m,. h, m2. 1 kg www kg Drain cooler m2 Heater-1 + (Н.Р.) Heater-2 (LP.)Air is used as a working substance in a given internal combustion engine, which is supplied with heat at a constant volume. Based on the data, calculate the The average pressure of the cycle.