1. A Rankine Power Cycle has a condenser pressure of 1.228 kPa, boiler pressure of 14 MPa, and maximum temperature of 700°C. If needed, water at 10 kPa can be extracted from between two turbine stages. a) Calculate the thermal efficiency of the basic cycle.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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**Educational Content: Rankine Power Cycle Analysis**

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**Problem Statement:**

A Rankine Power Cycle operates under the following conditions:

- **Condenser Pressure:** 1.228 kPa
- **Boiler Pressure:** 14 MPa
- **Maximum Temperature:** 700°C

Water at 10 kPa can be extracted from between two turbine stages if needed.

**Tasks:**

a) **Calculate the thermal efficiency** of the basic cycle.

b) **Calculate the thermal efficiency** if water is extracted from the turbines to use for regeneration in an open feedwater heater (OFH). The water exits the OFH as saturated liquid.

c) **Calculate the Extraction Utilization Factor (EUF)** if 20% of the total mass flowrate is extracted for use in process heating (cogeneration). At the end of the process, saturated water is pumped up to the boiler pressure before entering the OFH.

d) **Calculate the EUF** if 20% of the total mass flowrate is extracted for use in process heating (cogeneration). At the end of the process, saturated water enters the OFH before being pumped up to the boiler pressure.

---

**Note:** There are no graphs or diagrams included in this content. The analysis involves thermodynamic calculations typically related to cycle efficiency and process optimization in power generation systems.
Transcribed Image Text:**Educational Content: Rankine Power Cycle Analysis** --- **Problem Statement:** A Rankine Power Cycle operates under the following conditions: - **Condenser Pressure:** 1.228 kPa - **Boiler Pressure:** 14 MPa - **Maximum Temperature:** 700°C Water at 10 kPa can be extracted from between two turbine stages if needed. **Tasks:** a) **Calculate the thermal efficiency** of the basic cycle. b) **Calculate the thermal efficiency** if water is extracted from the turbines to use for regeneration in an open feedwater heater (OFH). The water exits the OFH as saturated liquid. c) **Calculate the Extraction Utilization Factor (EUF)** if 20% of the total mass flowrate is extracted for use in process heating (cogeneration). At the end of the process, saturated water is pumped up to the boiler pressure before entering the OFH. d) **Calculate the EUF** if 20% of the total mass flowrate is extracted for use in process heating (cogeneration). At the end of the process, saturated water enters the OFH before being pumped up to the boiler pressure. --- **Note:** There are no graphs or diagrams included in this content. The analysis involves thermodynamic calculations typically related to cycle efficiency and process optimization in power generation systems.
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