(e) Draw a Carnot power cycle and a Carnot refrigeration cycle for an ideal gas on a T-S diagram. Please indicate with arrows the direction of the processes.
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- What is Carnot cycle, Rankine cycle and Refrigeration cycle?An ideal Brayton refrigeration cycle has a compressor pressure ratio of 7. At the compressor inlet,the pressure and temperature of the entering air are 22 lbf/in. and 450°R, respectively. Thetemperature at the inlet of the turbine is 680°R. The compressor and turbine have esentropicefficiencies of 75% and 0.88%, respectively. (d) the rate of entropy production in the compressor, in Btu/min · R.(e) the rate of entropy production in the turbine, in Btu/min · RUsing T- diagrams , explain why superheating and reheating is necessary in a vapor power cycle from the functional perspective . Also show how it helps improve the efficiency of the cycle .
- A gas turbine power plant working on Brayton cycle, Explain the working principle of the cycle with physical diagram as well as P-V and T-s diagrams, and with all the required detailsAir enters the compressor of an ideal gas refrigeration cycle at 12°C and 50 kPa and the turbine at 47°C and 250 kPa. The mass flow rate of air through the cycle is 0.08 kg/s. Assuming variable specific heats for air, determine (a) the rate of refrigeration, (b) the net power input, and (c) the coefficient of performance.With ph, ts diagram A refrigerator based on ideal vapor compression cycle operates between the temperature limits of -20 deg C and 40 deg C . The refrigerant enters the condenser as saturated vapor and leaves as saturated liquid . The enthalpy and entropy values for saturated liquid and vapor at these temperatures are given in the table below: T(OC) hf (KJ/kg) hg (KJ/kg) Sf (KJ/kg.K) Sg (KJ/kg.K) -20 20 180 0.07 0.7366 40 80 200 0.3 0.67 If the circulation rate of the refrigerant is 0.025 kg/sec , the refrigeration effect is equal to A) 1.2 kW B) 2.5 kW C) 3.2 kW D) 2.1 kW
- ASJDBNLAHBADJBSFJDB Answer in kJ/kg Suppose that a power plant operates on a Carnot vapor cycle and uses water as the working substance. Saturated liquid water enters the boiler at a pressure of 10 MPa and leaves as saturated water vapor. Then it enters the steam turbine and leaves as saturated mixture at 20 kPa. Determine the heat added to the working substance in the boiler.A turbine with one extraction for regenerative feed water heating receives steam withan enthalpy of 3373 kJ/kg and discharges it with an exhaust enthalpy of 2326 kJ/kg.The ideal regenerative feedwaterheater receives 11,338 kg/h of extracted steam at345kPa (whose h=2745kJ/kg). The feedwater (condensate from the condenser)enters the heater with an enthalpy of 140kJ/kg and departs saturated at 345kPa(hf=582kJ/kg). Calculate the turbine output in kW.Give the TS and PV diagrams of Regenerative Rankine Cycle and how do you determine the mass of bleed steam in an open heater ?
- Need help with this engineering problem. Steam enters the turbine of a simple vapor power plant with a pressure of 12 MPa and a temperature of 500°C and expands adiabatically to condenser pressure, p. Saturated liquid exits the condenser at pressure p. The isentropic efficiency of both the turbine and the pump is 84%.For p = 100 kPa, determine: (a) the turbine exit quality, in percent.(b) the cycle thermal efficiency, in percent.In a Rankine Cycle , saturated liquid water at 1 bar is compressed isentropically to 150 bar. First by heating in a boiler and then by superheating at constant pressure of 150 Bar, the water substance is brought to 750 K. After Adiabatic reversible expansion in a turbine at 1 Bar, it is then cooled in a condenser to a saturated liquid. How much work is generated in the turbine? (include diagram)can you draw a t-s diagram for this actual regenerative rankine cycle