Q3// A 3-MW steam power plant have a water tubes boiler of the following specification: Steam production 9000 kg/h Steam pressure 15 bar 300 "C 0.9 313K Steam temperature Dryness fraction of steam in the steam drum Feed water temperature Water leaving economizer heating value of the fuel Fuel consumption Flue gas temperature Flue gas density Flue gas specific heat Boiler house temperature 115 °C 31 MJ/kg 1000 kg/h 160 "C 1.15 kg/m³ 1.11 kJ/kg.K 20 °C 1.24 m Chimney diameter Velocity of flue gases leaving the chimney 3 m/s 1. Determine the overall efficiency, boiler efficiency, and equivalence evaporation. 2. Draw the heat balance sheet for the boiler (all in kW). 3. State the requirements of good steam generator. Answ(83.35%, 11.45kgs/kgf, 34.84%, 8611.11kW. 787.5kW, 5280.7kW, 1109.05kW, 647.4kW)

Q3// A 3-MW steam power plant have a water tubes boiler of the following specification: Steam production 9000 kg/h Steam pressure 15 bar 300 "C 0.9 313K Steam temperature Dryness fraction of steam in the steam drum Feed water temperature Water leaving economizer heating value of the fuel Fuel consumption Flue gas temperature Flue gas density Flue gas specific heat Boiler house temperature 115 °C 31 MJ/kg 1000 kg/h 160 "C 1.15 kg/m³ 1.11 kJ/kg.K 20 °C 1.24 m Chimney diameter Velocity of flue gases leaving the chimney 3 m/s 1. Determine the overall efficiency, boiler efficiency, and equivalence evaporation. 2. Draw the heat balance sheet for the boiler (all in kW). 3. State the requirements of good steam generator. Answ(83.35%, 11.45kgs/kgf, 34.84%, 8611.11kW. 787.5kW, 5280.7kW, 1109.05kW, 647.4kW)

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

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 turbine
Q3/a steam power plant of a 25-MW electric output power has a medium water tube steam generator of the following specifications Steam production Steam pressure Steam temperature Dryness fraction of steam in the steam drum Feed water temperature from F.W.Hs Water leaving economizer Fuel :natural gas of heating value Fuel consumption Percent of unburned fuel Flue gas flow rate Flue gas temperature Flue gas specific heat 31.6kg/s 60bar 500 °C 0.96 100 °C 250°C 38700 kJ/m 2.85 m³/s 3% 22.67%) 12.8 kg/s 150°C 1.008 kJ/kg.K 30°C Ambient temperature 1. Determine the boiler efficiency and the equivalent evaporation. 2. Draw the heat balance sheet for the boiler(all in kW). 3. Determine the overall efficiency for this plant. Answ(86%,14.75kg steam/m3 fud, Ece-19908kW, E-52835kW, Ep 22050kW, Eest-1548.3kW,
Exercise: Steam Mass Balance Fill the steam mass flow Boiler Feed Water (BFW) of the yellow parts Boiler 1 Boiler 2 100 A Fuel 50 To process HPS 50 50 10 10 Back pressure turbine Extraction G Extraction Letdown Turbine Turbine 20 20 20 10 D WHB MPS To process E В Back pressure Condensing turbine Letdown turbine 40 To process LPS vent V cw O cw Deareator From process Condensate If the MPS demand is 20t/h less than the current supply, how to adjust the steam system? Water Make up 35 Treatment fresh water
A power plant was analysed based on Carnot cycle, the evaporator supplie 442 kJ of heat per cycle at 512°C and condenser cooling fluid was maintained at 36°C. (a).Determine the amount of heat rejected in the condenser? Provide answer to no decimal place and insert the unit symbol in kilo.... 1 °C is 273K in this question if required.
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.___________________________
A vapor compression cycle "COP= 2.5" is operated by an electric motor "3-Phase, 380 volts, 87% efficient", the cooling load is 31 kW. If the motor is replaced by a new one, same specifications but 94% efficient What will be the annual SOURCE energy savings. "kWh" when it's used for 1400 hours every cooling season every year? Grid efficiency is 37%. Select one: A. 4362.63 B. 3401.59 C. 4016.05 D. 3718.86 E. 4686.73
Homework-2 Compute the themal e fficiency of an ideal Ran kine cycle for which the steam leavea the boiler as Saturated Vapor at 30 bars. The turbine-outlet Conditions is Be1 bar. Determine the mass floo rate of the steam in kg/hr, net Power output of the cycle is 50000 Sehematic ond given data are: 1f the kw. The TI= 5002 P 3०bars %3D 9in (saturated) vapour 30 bars 2 PR =0-1 bar 4 Pa=30 bas o-1 bar +4 Tout 3 (Saturated liquid) Wp ( Simple Ideal Power cycle) (T.S. diagram e)
A reheat cycle with two stages of reheating is executed, with steam expanding initially from 202.65 and 540 deg. C. The two reheater pressures are 40 bar and 10 bar, and steam leaves each reheater at 540 deg. C. Condensation occurs at 60 deg. C. Sketch the Ts - diagram. For an ideal cycle, find Qa and e. For the engine operating between the same conditions compute W and e. For a 362, 500 kg/h steam and 100 MW generator output at 94% efficiency, for actual engine, find combined thermal efficiency and combined heat rate and combined engine efficiency and quality of the actual exhaust steam. (3 decimal places in final answer pls)
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: Combined work (KW) . Ans.____________________________ Combined steam rate in kg/KW-hr. Ans.___________________________ Actual heat rate( KJ/KW-hr). Ans.____________________________
3:57 A Done lecture 7_b5ee35c08478147bb8a3744a... Lec. (7) tar -Dry bulb temperature O Example (1): An air conditioning equipment (figure) have the following: - Supply air mass-1.26 kg/s. The cooling coil receives 20 % outdoor air and 80% return air. tdz Fig. 18.14. Representation of supply air condition and room design condition. 0.252 kg/s Refrigeration and A/C - Outdoor air conditions are: 28°C db, 19.5°C wb Return air conditions are: 22°C db, 50% RH. The mixture air condition outlet the cooling coil are: 10°C db, 0.00735 kg/kgda Draw the system on the Psychrometric chart, then calculate: 1. Cooling coil load. 2. Room sensible heat. 3. Room latent heat. 4. Fresh (outdoor) load. 5. Duct and fan heat gain 6. Sensible heat ratio SHR. If the supply air temperature increases with a value 1°K due to fan motor heat gain and 2°K due to duct heat gain. . ← 1.008 kg/s R to Dr. Omar M. Ali LTE الغرفة المراد تكييفها (22,50 %) 1.26 kg/s R Grand Sensible Heat Factor It is defined as the ratio of…
1:44 A e-learning.hct.edu.om P Flag question Calculate the heat supplied to the working fluid in a Rankine cycle with reheat. Assume that the working fluid is at superheated condition entering and leaving both HPT and LPT. The working fluid entering the boiler at enthalpy 384.31 kJ/kg leaves boiler at 3.5 MPa and 242.6 °C. The working fluid enters the reheater at enthalpy 2799.5 kJ/kg leaves reheater at 3.5 MPa and 242.6 °C. Paragraph I Path: p Maximum file size: 5OMB maxımum number of II !!!
Pa Complete the table given below for a closed system undergoing a cycle. Coet Wet Process Wot kJ AUKJ 1-2 21 11 2-3 14 -8 3-4 -5 4-1 4. 6.