2. In a Brayton cycle air enters the compressor at 101.32 kPa, 32°C and leaves at a pressure of 808 kPa. The air is heated to 717°C in the combustor. For a net output of 2125 kW, compute (a) the rate of flow of air per second, (b) the thermal efficiency, and (c) the mean effective pressure. Ans. (a) 10.78 kg/s, (b) 44.75%, (c) 145.65 kPa

2. In a Brayton cycle air enters the compressor at 101.32 kPa, 32°C and leaves at a pressure of 808 kPa. The air is heated to 717°C in the combustor. For a net output of 2125 kW, compute (a) the rate of flow of air per second, (b) the thermal efficiency, and (c) the mean effective pressure. Ans. (a) 10.78 kg/s, (b) 44.75%, (c) 145.65 kPa

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

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Question

2. In a Brayton cycle air enters the compressor at 101.32
kPa, 32°C and leaves at a pressure of 808 kPa. The air is heated
to 717°C in the combustor. For a net output of 2125 kW,
compute (a) the rate of flow of air per second, (b) the thermal
efficiency, and (c) the mean effective pressure.
Ans.
(a) 10.78 kg/s, (b) 44.75%, (c) 145.65 kPa

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1. A. Using the Steam Tables, determine the amount of cooling water needed by a condenser in kg/sec if wet steam comes into the condenser at P= 610.44mmHG vac and 99.47 % moisture, mass flow rate = 7200 + (10/13) kg/hr. Cooling water enters the condenser at 12 deg Cand leaves at 21 deg C. Answer: diagrams below. Cp H20 = 4.187 KJ/kg-K): Schematic diagram of heat exchanger =condenser B. Draw the schematic diagram of the condenser and process in the PV and TS V 2. Use only the MD below to solve this Item; use it by plotting data and process to determine items being asked. Steam enters a turbine at 117.4308 atmgage and 932 deg. F, and expands isentropicaly to 177.17 inches of Hg. For 2 + (10/13 kg/sec of steam, what is (a) the ideal work done (KJ/sec) if AKE = 0 and actual exhaust enthalpy is 2700 KJ/kg. a)Ans: (b)ne =. (c]Determine: ideal steam moisture at exhaust. Ans: (d) Actual steam quality at exhaust Ans: (e) Actual steam temp g) change in entropy during the actual process. at the…