mass flow rate of the well water in kg/s?
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A liquid dominated geothermal plant with a single flash separator receives water at 204°C. The separator pressure is 1.04 MPa. A direct contact condenser operates at 0.034 MPa. The turbine has a polytropic efficiency of 0.75. For a cycle output of 50 MW, what is the mass flow rate of the well water in kg/s?
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- When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be higher in temperature than the entering air temperature.What are the approximate temperature ranges tor low-, medium-, and high-temperature refrigeration applications?The defrost cycle in a domestic refrigerator may be terminated by two methods: ___and___.
- A power station consists of a four-unit coal fired power station, having a combined capacity of 2,880 MW. The current efficiency of each unit is around 37.7%. You are asked to improve the thermal efficiency of each unit by lowering the condenser pressure. To simplify this task, assume that each unit operates on a simple ideal Rankine cycle. If the superheated vapour enters the turbine at 10 MPa and 500 ֯C and is cooled in the condenser at a lower pressure 10 kPa, determine the quality of the steam at the turbine exit and the thermal efficiency of the cycle for one unit.A Rankine Cycle operates with 4500 kW of heat added to the boiler while 3300 kW of heat is rejected in the condenser. What is the efficiency of this cycle?Refrigerant 134a is the working fluid in a solar power plant operating on a Rankine cycle. Saturated vapor at 60 degree Celsius enters the turbine, and the condenser operates at a pressure of 6 bar. The rate of energy input to the collectors from solar radiation is 0.4 kW per m2 of collector surface area. Determine the minimum possible solar collector surface area, in m2, per kW of power developed by the plant.
- Compare the Rankine efficiency of a high pressure plant operating from 80 bar and 400°C and a low pressure plant operating from 40 bar 400°C, if the condenser pressure in both cases is 0.07 bar.A steam power plant with a closed feedwater Heater operates on a regenerative Rankine cycle with reheating. Steam enters the turbine at 8 MPa pressure and 5YX C temperature, 1Y kg/s flow rate, and condenses in the condenser at 2X kPa pressure. The intermediate heating is condensing at a pressure of 3 MPa. Intermediate heating is done at a pressure of 3 MPa and the steam is heated to a temperature of 5X0 C. Some steam is separated from the low pressure turbine at a pressure of 1 MPa, after it is completely condensed in the closed feed water heater, it is pumped to a pressure of 8 MPa before mixing with the feed water at the same pressure. Assuming the isentropic efficiencies of the turbines and pumps are 8Y.X%, calculate (a) the temperature of the steam at the inlet of the closed feedwater heater, (b) the mass flow rate of the steam leaving the turbine for the closed feedwater heater, (c) the net power, and (d) the thermal efficiency.note: x=2,y=7A 211 MW steam power plant is proposed that will operate in a Rankine cycle with a condenser pressure of 0.06 bar and the boiler pressure is 50 bar. The maximum temperature in the boiler is 500°C a)Determine the overall efficiency and work ratio of the cycle.
- A R-134A vapor refrigeration cycle cycle operates at an evaporator temperature of 20 Celsius and a condensing temperature of 35 Celsius. Determine the coefficient performance for. Ideal saturation cycle. Wet compression with saturated vapor leaving the compressor . Suction to the compressor is superheated by 7 degrees Celsius. Using this table https://www.docdroid.net/VkxK8WH/refrigerant-134a-pdfIn a steam power plant operating according to the ideal Rankine cycle at 4MPa pressure and 400CIt enters and condenses in the condenser at a pressure of 100kPa. Determine the efficiency of the cycle.What would the efficiency be if the steam entered the turbine at 5MPa pressure and condensed at 90kPa pressure.Given a rankine cycle with reheat operating with the following conditions: Boiler Exit Conditions: 10.111 Mpa, 600.111C , and 7 kg/s Reheat One leg Exit Conditions: 1.6 MPa and 600.111 C Reheat two leg Exit conditions: 1.1111 MPa and 500.111C Reheat three leg exit conditions: 0.8111MPa and 400.111C Condenser Operating Pressure: 30.111 kPa Assume all devices are ideal. Determine the power output, heat transfer rate input required, and thermal cycle efficiency of the plant. Draw the schematic diagram and T-s diagram.