5 (1) Complete the following table for water. P, kPa T, °C v, m³/kg (a) 1200 (b) 500 (c) 160 187.96 0.16326 0.47443 B5X 839 5000 (d) 16.73 550 (e) 40 X= √3-VF Vg 6(2) Complete the following table for R-134a. P, kPa u, kJ/kg h, kJ/kg T, °C Fan 1017.1 108_20+ 0.227 ( X=1143 +3 Mec 6 50 h, kJ/kg 165 2783.8 640.09+ n/2 038-11-313-14/0 h = hf + x (hg-hf) h = 140 1986-1 145.28 -16 326 Quality, N/A if Phase description not applicable J =403/ 12% Satnated Tamid. Vapor Satted vapor Saturated 140 = 107-39+x (251-107.34) 32.61 = 143,67 X = 0.227 Liquid - Vapor Mixture 3 (3) 50 W shaft work from a fan is used to accelerate the speed of air (at a mass flow rate of 0.5 kg/s) from zero to 12 m/s. What is the mechanical efficiency of the fan? ŵ Saturtor Fait Zaper heated or -1 Compressed Liquid 2483.8 = 1.33+ & (1985-4) Quality, N/A if not applicable -1 MA X = 0.227 X=0 Phase V=12m Superheas description Saturated liquid Q=Q5kg
5 (1) Complete the following table for water. P, kPa T, °C v, m³/kg (a) 1200 (b) 500 (c) 160 187.96 0.16326 0.47443 B5X 839 5000 (d) 16.73 550 (e) 40 X= √3-VF Vg 6(2) Complete the following table for R-134a. P, kPa u, kJ/kg h, kJ/kg T, °C Fan 1017.1 108_20+ 0.227 ( X=1143 +3 Mec 6 50 h, kJ/kg 165 2783.8 640.09+ n/2 038-11-313-14/0 h = hf + x (hg-hf) h = 140 1986-1 145.28 -16 326 Quality, N/A if Phase description not applicable J =403/ 12% Satnated Tamid. Vapor Satted vapor Saturated 140 = 107-39+x (251-107.34) 32.61 = 143,67 X = 0.227 Liquid - Vapor Mixture 3 (3) 50 W shaft work from a fan is used to accelerate the speed of air (at a mass flow rate of 0.5 kg/s) from zero to 12 m/s. What is the mechanical efficiency of the fan? ŵ Saturtor Fait Zaper heated or -1 Compressed Liquid 2483.8 = 1.33+ & (1985-4) Quality, N/A if not applicable -1 MA X = 0.227 X=0 Phase V=12m Superheas description Saturated liquid Q=Q5kg
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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### Transcription of Thermodynamics Exercises
#### 1) Complete the following table for water.
| P, kPa | T, °C | v, m³/kg | h, kJ/kg | Quality, N/A if not applicable | Phase description |
|--------|-------|----------|-----------|---------------------------------|--------------------------|
| a) 1200 | 189.96 | 0.16326 | 2783.8 | (1) | Saturated liquid/vapor |
| b) 500 | 151.83 | 0.47743 | 640.09 | n/a | Superheated vapor |
| c) 160 | 500 | [Blank] | 3130.1 | n/a | Superheated vapor |
- Additional notes and calculations are written around the table, detailing specific thermodynamic calculations and corrections.
#### 2) Complete the following table for R-134a.
| T, °C | P, kPa | v, m³/kg | h, kJ/kg | Quality, N/A if not applicable | Phase description |
|--------|--------|----------|----------|---------------------------------|-------------------------------|
| d) 18.75 | 550 | [Blank] | 186.1 | X = 0 | Saturated liquid |
| e) 40 | 140 | [Blank] | 145.28 | X = 0.227 | Saturated liquid-vapor mixture|
- Additional handwritten calculations involve interpolation to find accurate values for enthalpy and other properties.
#### 3) Problem on Mechanical Efficiency
**Question:** 50 W shaft work from a fan is used to accelerate the speed of air (at a mass flow rate of 0.5 kg/s) from 0 to 12 m/s. What is the mechanical efficiency of the fan?
- A diagram of a fan is present, indicating airflow direction.
- **Solution Steps:**
- Calculate kinetic energy per second.
- \( Efficiency = \left(\frac{6}{50}\right) \times 100\% = 12\% \)
- Additional notes: Various formulas for calculating the work, energy, and efficiency, indicating steps involved in solving the problem.
---
This section presents educational exercises focusing on thermodynamics, particularly](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fece3d40f-e8f0-464a-aada-c18e494e1994%2F0ef2acfb-84bc-4848-8948-3ca16f32d884%2F0ic5dvu_processed.jpeg&w=3840&q=75)
Transcribed Image Text:---
### Transcription of Thermodynamics Exercises
#### 1) Complete the following table for water.
| P, kPa | T, °C | v, m³/kg | h, kJ/kg | Quality, N/A if not applicable | Phase description |
|--------|-------|----------|-----------|---------------------------------|--------------------------|
| a) 1200 | 189.96 | 0.16326 | 2783.8 | (1) | Saturated liquid/vapor |
| b) 500 | 151.83 | 0.47743 | 640.09 | n/a | Superheated vapor |
| c) 160 | 500 | [Blank] | 3130.1 | n/a | Superheated vapor |
- Additional notes and calculations are written around the table, detailing specific thermodynamic calculations and corrections.
#### 2) Complete the following table for R-134a.
| T, °C | P, kPa | v, m³/kg | h, kJ/kg | Quality, N/A if not applicable | Phase description |
|--------|--------|----------|----------|---------------------------------|-------------------------------|
| d) 18.75 | 550 | [Blank] | 186.1 | X = 0 | Saturated liquid |
| e) 40 | 140 | [Blank] | 145.28 | X = 0.227 | Saturated liquid-vapor mixture|
- Additional handwritten calculations involve interpolation to find accurate values for enthalpy and other properties.
#### 3) Problem on Mechanical Efficiency
**Question:** 50 W shaft work from a fan is used to accelerate the speed of air (at a mass flow rate of 0.5 kg/s) from 0 to 12 m/s. What is the mechanical efficiency of the fan?
- A diagram of a fan is present, indicating airflow direction.
- **Solution Steps:**
- Calculate kinetic energy per second.
- \( Efficiency = \left(\frac{6}{50}\right) \times 100\% = 12\% \)
- Additional notes: Various formulas for calculating the work, energy, and efficiency, indicating steps involved in solving the problem.
---
This section presents educational exercises focusing on thermodynamics, particularly
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