a. What physical phenomena causes the pressure to drop from point 4-5 (and point 1-2)? b. Define the following types of processes: • an isothermal process is a constant process. an isobaric process is a constant _process. An isenthalpic process is a constant _process. • An isometric process is a constant process. • An isentropic process is a constant_ _process. An adiabatic process does not transfer heat to the
a. What physical phenomena causes the pressure to drop from point 4-5 (and point 1-2)? b. Define the following types of processes: • an isothermal process is a constant process. an isobaric process is a constant _process. An isenthalpic process is a constant _process. • An isometric process is a constant process. • An isentropic process is a constant_ _process. An adiabatic process does not transfer heat to the
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Please answer questions a, b, and c.
Transcribed Image Text:**Understanding the Rankine Cycle: Power Plant Schematic and Data**
The diagram illustrates the schematic of a power plant operating in a cycle known as the 'Rankine Cycle'. The primary components of this cycle include:
1. **Pump (1)**: Increases the pressure of the working fluid.
2. **Economizer (3)**: Heats the fluid before it enters the steam generator.
3. **Steam Generator (4)**: Converts water into steam using heat from fuel.
4. **Turbine (5)**: Extracts energy from the high-pressure steam to produce work.
5. **Condenser (6)**: Converts steam back into water using cooling water.
**Operating Conditions and Measurements**
The power plant control room reports the following peak load conditions:
- **Power to pump**: 300 kW
- **Rate of steam flow**: 25 kg/s
- **Cooling water temperature at condenser inlet**: 13°C
- **Cooling water temperature at condenser outlet**: 34°C
Data collected at various data points in the power plant include:
| Data Point | Pressure (kPa) | Temp. (°C) | Quality (x) | Enthalpy (kJ/kg) | Specific Volume (m³/kg) | Velocity (m/s) |
|------------|----------------|------------|-------------|------------------|-------------------------|----------------|
| 1 | 6200 | ----- | ----- | ----- | ----- | ----- |
| 2 | 6100 | 43 | ----- | ----- | ----- | ----- |
| 3 | 5900 | 177 | ----- | ----- | ----- | ----- |
| 4 | 5700 | 493 | ----- | ----- | ----- | ----- |
| 5 | 5500 | 482 | ----- | ----- | ----- | ----- |
| 6 | 103 | ----- | 0.94 | ----- | ----- | 183 |
| 7 | 96 | 43 | ----- | ----- | ----- | ----- |
This data provides insights into the thermodynamic properties at different stages of the Rankine cycle, indicating pressure, temperature, fluid quality, specific volume, and velocity. Understanding these
Transcribed Image Text:**a.** What physical phenomenon causes the pressure to drop from point 4-5 (and point 1-2)?
**b.** Define the following types of processes:
- An isothermal process is a constant ___________________ process.
- An isobaric process is a constant ___________________ process.
- An isenthalpic process is a constant ___________________ process.
- An isometric process is a constant ___________________ process.
- An isentropic process is a constant ___________________ process.
- An adiabatic process does not transfer heat to the ___________________.
**c.** Use the pump power and other information to calculate the pump inlet and outlet conditions.
- Step 1: Sketch the entire system (Given in this problem).
- Step 2: Draw the complete control volume (CV) for the component(s) of interest.
- Step 3: Show state variables with units and other useful information on CV sketch.
- Step 3: Write the governing equation.
- Step 4: State all assumptions including type of process and simplify equation(s).
- Step 5: Solve equation(s)
- Step 6: Does it make sense?
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