Calculate: (i) Boiler efficiency. (ii) Percentage of heat loss in flue gas. (iii) Percentage of heat loss to ash and unburnt coal. (iv) Percentage of heat loss unaccounted for.
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- HANDWRITTEN AND FINAL ANSWER MUST BE IN ENGLISH UNITS. Show solution.ANSWER iii. Consider an ideal gas with the following characteristics: R = 115 ft-lbf/lbm-R Cp = 0.25 + 0.00035T (BTU/lbm-R) i. Solve for the value of k at 1250 R. ii. Refer to the table shown below: SEE IMAGE iii. Solve the following unknown parameters for Carnot cycle: Volume at end of isothermal compression Heat added and Heat rejected Wnet Efficiency Mean effective pressure iv. Solve the following unknown parameters for Otto Cycle Mass Pressure and Temperature ateach corner Heat added and Heat rejected Wnet Efficiency Mean effective pressure Percentage clearance v. Solve the following unknown parameters for Diesel Cycle with 6% cut-off. Compression ratio Percentage clearance Heat added and Heat rejected Wnet Efficiency Mean effective pressureA factory uses superheated steam (P = 15 bar, T = 250 oC) for heating purposes of 20,000 tons/month. Steam is made in a boiler-furnace using 2 (two) types of fuel, namely coal fuel (LHV = 5500 kcal/kg) and heavy fuel oil (137129 Btu/ft3, density = 0.98 m3/kg) Question: a. How much coal fuel is needed to produce steam with the above specifications if the overall efficiency of the system (boiler-furnace = 75%)! b. How much heavy fuel oil is needed to produce steam with the above specifications (boiler-furnace = 75%)! answer every month... Help pleasee.. fast pleaseThe condensing pressure for a Rankine engine is 0.001325 MPavac. Calculate the following for steam flow rate = 1 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: Pump work in KW. Ans. Ideal heat rate in KJ/KW-hr. Ans. Rankine engine efficiency (%). Ans. Cycle thermal efficiency ( %). Ans
- I am trying to find the mass flow rate of cooling water in the condenser Known values T9 = 20 C, T10 = 30 C, m_dot = 20.27 kg/s, h3 = 2190.209 kJ/kg, h4 = 146.681 kJ/kg The formulas I have found require using cp or knowing the enthalpies of states 9 and 10 but I am not sure how to find these. how do I solve this problem.Find the rated boiler horsepower, heat added to the boiler, factor of evaporation, developed horsepower, and percentage boiler rating for a water-tube boiler with the following specifications: Heating surface: 18,000 ft?. • Steam produced by boiler: 75,000 lb/hr. • Pressure: 150 psia. • Heat contained in 150 psia steam: 1,194.1 Btu/lb. • Feed-water temperature: 180°F.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.
- ZV7 ZAIN IQ BigBlueButton - Reheat.. t014.rna1.blindsidenetworks.com 37:28 Rankine Cycle ... Ali Khaleel Kareem O Homework Example 2: 2.6 (Page 45) In a stream power plant, the steam mass flow rate is 80ton/h, the steam inters the turbine at 6MPA and 480 °C, condenser pressure = 0.06MPA, mechanical and electrical efficiencies are 0.96 & 0.95, respectively. Find the specific steam consumption and the power output. Example 3: 2.7 (Page 46) Find the cycle efficiency and specific steam consumption of a reheat cycle (Error! Reference source not found.) operating between pressures of 3MPA and 0.004MPA, 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.Describe the T-s diagrams accordingly by filling in the blanks. Use the sets of words given below for the correct description. reheat/ closed Ideal / Actual / vapour /cycle /Carnot/ Rankine/ Brayton/Ericsson/Stirling/regenerative/ open/with/a Nino To C @ 4 2. 5. 6. a b с e T f 1 4 In a two-stage gas turbine plant, with reheating after the first stage TA 25 decreases the thermal efficiencies. increases the thermal efficiencies. does not affect thermal efficiencies. Decreases the work ratio. increases the work ratio. does not affect the work ratio. equal. unequal. 2 5 The ideal compressor work and turbine work in a jet-propulsion engine is a b 9in 2/ qout Wpump.in High-pressure turbine 3 Reheating 6 Wturb,out Low-pressure turbine с not related to each other. d unpredictable (a) By writing an energy balance on the heat exchanger of a binary vapour power cycle, obtain a relation for the exit enthalpy regarding the mass flow rates of two fluids in terms of the other enthalpies. Take the…Two moles of an ideal diatomic gas is taken through the cycle shown. At the state 1, the pressure is P1 and the volume is V. If p =300 kPa and V, = 040 m', find p2, P3 and T3- Also compute W, Q. AE per cycle, and the thermal efficiency n. int isothermal Adiabatic Vị 3V1 Volume Pressure
- 3. A water-tube boiler having a heating surface of 325.23 m² evaporates 6349.21 kg of water in an hour from a feed temperature of 66 °C. Boiler pressure is at 1.04 MPaa and the steam quality at the boiler outlet is 99 %. What percent of its rated Bo. Hp was the boiler developing?The following data was recorded during a test performed on a steam plant consisting of a Lancashire boiler, economiser and a superheater. Steam generated = 5,000 kg/hr at 14 bar pressure Mass of coal burnt = 670 kg/hr %3D Calorific value of coal = 29500 kJ/kg Temperature of feed water at entry and exit of economiser = 30°C and 130 C respectively. = 320 °C. Temperature of steam leaving the superheater Dryness fraction of steam leaving the boiler = 0.97 c, (superheated steam) = 2.3 kJ/kg-K 4.18 kJ/kg-K Cp (water) %3D Calculate: (1) Factor of evaporation. (2) Overall efficiency of the plant.Q.1. A refrigeration process with interstage cooling uses refrigerant HFC-134a, and the outlet of the condenser is to be saturated liquid at 40°C. Refer to the following figure for stream numbers in your solution. The pressure of the flash chamber and the intermediate pressure between compressors is to be 290 kPa. The evaporator is to operate at -20°C and the outlet is to be saturated vapor. The flowrate of stream 1 is 23 kg/h. The flash chamber may be considered adiabatic. The compressors may be considered to be 80% efficient. a) What is the power input required to the first compressor? b) What are the flowrates of streams 6 and 7? What is the enthalpy of stream 4? Hot Side 6 5 Condenser 2nd Stage Compressor Throttle Valve 7 Flash Chamber Vapor Phase Only 1st Stage Compressor 8 Throttle Valve Evaporator 1 2 Cold Side