FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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2. A power plant operates between pressures of 80 bar and 0.1 bar in an ideal Rankine cycle.
The maximum cycle temperature is 600 deg. Celsius. For mass flow rate of 5 kg/sec,
Could you please help with these questions, i understand there is more than one question so plese feel free to take more credits or advice on how to do so, Thanks in advance
for R600a1) at 40oC what is the pressure of condensation?2) What is the absolute pressure and gauge pressure of -25’C evaporating refrigerant?
3) mollier diagram (including dryness)
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- 1 atm steam (sat.) preheats CO2. If 2.26 MJ heat is released from 1kg of condensing steam, How much saturated steam is needed to condense to that 21 kg/s CO2is preheated from 303.15 K to 353.15 K? Cp CO2 = 4.5R, where R = 8.314 J/mol K. a. 0.40 kg/s b. 0.36 kg/s c. 0.30 kg/s d. 0.18 kg/sarrow_forwardI. Condensing temperature = 40 C II. Evaporating temperature = 5 C III. Temperature of solution entering generator = 80 C IV. Temperature of solution leaving generator = 100 C V. Assume saturated conditions for states 3, 4, 8, and 10. VI. Saturated steam at 0.2 MPa enters the generator and leaves as saturate water: Compute: a. the required mass flow rate of the steam (kg/hr) per kW of refrigeration produced b. the Heat Rejection Ratio, HRR = (Qabsorber + Qcondenser)/Qevaporator of the system.arrow_forward5. Calculate the latent heat of condensation for water at 8 MPa. Compare with values from steam table.arrow_forward
- 1. Steam is generated at 4.20 MPa and 460°C and condensation occurs at 0.105MP.. a. For a rankine engine operating between these limits compute the thermal efficiency and the heat rate. b. Considering that a Rankine cycle occurs between the same limits, determine Q.. Q,, w. and e C. What mass flow rate is required for a net output of 35,000 kW?arrow_forwardPlease answer questions g, h, and i. g.Calculate the heat transferred in the condenser. h.Calculate the diameter of the pipe connecting the turbine to the condenser. Design data for the plant shows the following pipe diameters. i. Calculatecooling water flow rate in GPM (‘gallons per minute’)through the condenser if the temperature of the cooling water increases from 13 C to 24 C in the condenser.arrow_forwardWhat are the advantages of Contact condensing systems?arrow_forward
- The LiBr-water absorption cycle shown in Fig. 17-2 operates at the following temperatures: generator, 100°C; condenser, 55°C; evaporator, 10°C, and absorber, 30°C. The flow rate of solution delivered by the pump is 0.4 kg/s. What is the concentration of Li-Br in the generator?arrow_forward5. Steam is generated at 6.10 MPa and 4500C and condensation occurs at 170 kPa. (a)For a Rankine engine operating between these limits, compute the thermal efficiency and the heat rate. (b) Considering that a Rankine cycle occurs between the limits, determine QA, QR, WNet, and eC. (c) What mass flow rate is required for a net output of 35 MW? Please answer what is asked in a, b and c. Thanksarrow_forwardDescribe the Internally and Externally Reversible Processesarrow_forward
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