A thermal power plant operates such that the steam exits boiler at 4 MPa, 400C and the condenser pressure is 10 kPa. The efficiency of the turbine and pump is 85% and 90% respectively. a. Draw the plant PFD (Process Flow Disgram) and the process Ts diagram and calculate quality of steam discharge from the turbine as well as the plant's thermal efficiency. b. If the plant produces 300MW of net power, - What is the steam flowrates in kg/hr? - If the plant uses natural gas as a fuel, determine the flowrate of NG in MMSCMD. State the reference for your data. - If the plant uses coal as a fuel, determine the amount of coal required (tonne per annum). State the reference for your data and all your assumptions. c. How much power required by the pump in kW? Is this the real power required by the pump? Explain

A thermal power plant operates such that the steam exits boiler at 4 MPa, 400C and the condenser pressure is 10 kPa. The efficiency of the turbine and pump is 85% and 90% respectively. a. Draw the plant PFD (Process Flow Disgram) and the process Ts diagram and calculate quality of steam discharge from the turbine as well as the plant's thermal efficiency. b. If the plant produces 300MW of net power, - What is the steam flowrates in kg/hr? - If the plant uses natural gas as a fuel, determine the flowrate of NG in MMSCMD. State the reference for your data. - If the plant uses coal as a fuel, determine the amount of coal required (tonne per annum). State the reference for your data and all your assumptions. c. How much power required by the pump in kW? Is this the real power required by the pump? Explain

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter40: Typical Operating Conditions

Section: Chapter Questions

Problem 10RQ: The seasonal energy efficiency ratio (SEER) includes the energy used in the _____and _____cycles.

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A thermal power plant operates such that the steam exits boiler at 4 MPa, 400C and the condenser pressure is 10 kPa. The efficiency of the turbine and pump is 85% and 90% respectively. a. Draw the plant PFD (Process Flow Disgram) and the process Ts diagram and calculate quality of steam discharge from the turbine as well as the plant's thermal efficiency. b. If the plant produces 300MW of net power, - What is the steam flowrates in kg/hr? - If the plant uses natural gas as a fuel, determine the flowrate of NG in MMSCMD. State the reference for your data. - If the plant uses coal as a fuel, determine the amount of coal required (tonne per annum). State the reference for your data and all your assumptions. c. How much power required by the pump in kW? Is this the real power required by the pump? Explain d. Find the heat rejected in the condenser and evaluate the thermal efficiency using this value. e. The heat rejected to surrounding is through a cooling water system from a nearby ocean.…
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2.A steam throttling valve with inlet conditions of 3MPA and 500C is connected to the inlet of the turbine. The turbine has 800kW power output and heat absorbed of 500kw. If the mass flow rate is 1kg/s and the exit temperature of steam is 400C, find the exit turbine pressure. (
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
6.1) A boiler produces 25 kg/s of steam at 3 MPa and 600 °C, cools the condenser with seawater so that the outlet is at 45 °C, then a reheating at 500 kPa up to 400°C is carried out, then a low-pressure expansion is carried out in the turbine. Determine: A) The net power output B) The total heat transfer in the boiler Boiler Pump www اپنا Be Turbine Condenser آلفا Ans= A) 34820 kW B) 91733 kW
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The steam rate to a turbine for variable output is controlled by a throttle valve in the inlet line.Steam is supplied to the throttle valve at 1,700 kPa and 225°C. During a test run, the pressure atthe turbine inlet is 1000 kPa, the exhaust steam at 10 kPa has a quality of 0.95, the steam flowrate is 0.5 kg/s, and the power output of the turbine is 180kW. 1. What are the heat losses from the turbine? 2. What would be the power output if the steam supplied to the throttle valve were expandedisentropically to the final pressure?
When a steam boiler generates saturated steam at 2.5 mpa and the condenser pressure is 20 kpa, what is the Rankine cycle efficiency?Show complete step-by-step process and solution.
At 10kPa pressure and dryness degree x=0.90, the steam coming out of the turbine goes to the pump with adiabatic efficiency of 0.85 after condensing in the condenser. The pump sends the condensed water to the steam boiler with a working pressure of 8MPa. a) Find the h.T values of the inlet points of the condenser, pump and boiler b) Since the flow rate of the condensed water is 9000 kg/h, find the load of the condenser c) Find the power of the pump
One kg of dry and saturated vapor enters to the turbine at 6.0 MPa. Steam leaves thisturbine stage at a pressure of 0.008 Mpa. Calculate the quality of steam at exit of turbine,heat rejected, heat added, cycle efficiency and engine efficiency.(Note: Draw the schematic and T-s diagram)
A power plant operating in a Reheat Rankine Cycle produces steam at 3 MPa, 600oC in the boiler. It keeps the condenser at 45oC by transfer of 10 MW out as heat transfer. The first turbine section (high-pressure) expands to 500 kPa and then flow is reheated followed by the expansion in the low-pressure turbine. Draw the Ts Diagram Determine the values of enthalpy for each state. Compute for the Pump work input (kJ/kg) Solve for the High-Pressure and Low-Pressure Turbines work output (kJ/kg) Determine the mass flow rate (kg/s) Find the boiler heat transfer including the reheat process (kW) Show how much is the net power output (kW) Provide a detailed solution. Avoid shortcuts. THERMODYNAMICS
iii) the exit area of the nozzle. Take Cp = 1.005 kJ/kg-K and R=287 J/kg-K Q.B3. A heat engine operates between two reservoirs at 400°C and 30°C. Half the power produced by the heat engine is used to drive a Carnot heat pump that removes heat from the cold surroundings at 2°C and transfers it to a house maintained at 27°C. The heat engine is absorbing heat at a rate of 5 kJ/s. i) Draw the complete schematic of the device ii) Determine the thermal efficiency of the heat engine iii) Determine the coefficient of performance of the heat pump iv) Determine the rate of heat loss from the house. v) Determine the minimum rate of heat extraction by the heat pump, and vi) the total rate of heat rejection.