Steam Tables Calculator
Steam tables are one of the most important tools in thermodynamics, mechanical engineering, power plants, and refrigeration studies. However, using printed steam tables can be confusing and time-consuming. You have to interpolate values, switch between pressure and temperature pages, and manually calculate properties like enthalpy, entropy, and specific volume.
That is why this Steam Tables Calculator is designed to make your life easy. It instantly calculates all essential thermodynamic properties of steam for:
- Saturated steam using temperature
- Saturated steam using pressure
- Superheated steam using temperature and pressure
With one simple input, you get complete data including hf, hg, hfg, sf, sg, vf, and vg without doing any manual work.
What Is a Steam Tables Calculator?
A steam tables calculator is a tool that gives you the thermodynamic properties of water and steam at different states. These properties are required for solving problems in:
- Boilers and turbines
- Rankine cycle analysis
- Heat engines
- Refrigeration systems
- Thermal power plants
This tool eliminates the need for printed tables and interpolation by calculating everything instantly.
Supported Calculation Modes
This calculator offers three powerful modes:
1. Saturated Steam by Temperature
Use this mode when the temperature of steam is known and the steam is at saturation condition.
2. Saturated Steam by Pressure
Use this mode when pressure is known instead of temperature.
3. Superheated Steam
Use this mode when steam temperature is higher than the saturation temperature at the given pressure.
How to Use the Steam Tables Calculator
Follow these simple steps:
Step 1: Select Calculation Mode
Choose one of the three modes from the dropdown:
- Saturated Steam (by Temperature)
- Saturated Steam (by Pressure)
- Superheated Steam
Step 2: Enter Input Values
- For saturated by temperature → enter temperature in °C
- For saturated by pressure → enter pressure in bar
- For superheated steam → enter both temperature and pressure
Step 3: Click “Calculate”
The calculator instantly displays all thermodynamic properties.
Step 4: Click “Reset”
To clear all data and start a new calculation.
Example Calculation
Let’s calculate saturated steam properties at 100°C.
Enter:
- Mode: Saturated Steam (by Temperature)
- Temperature: 100
The calculator will display:
- Pressure (P)
- Specific Enthalpy of liquid (hf)
- Specific Enthalpy of vapor (hg)
- Latent heat (hfg)
- Specific Entropy liquid (sf)
- Specific Entropy vapor (sg)
- Specific Volume liquid (vf)
- Specific Volume vapor (vg)
All values are generated instantly without referencing steam tables.
Properties Explained Simply
| Symbol | Meaning |
|---|---|
| hf | Enthalpy of saturated liquid |
| hg | Enthalpy of saturated vapor |
| hfg | Latent heat of vaporization |
| sf | Entropy of saturated liquid |
| sg | Entropy of saturated vapor |
| vf | Specific volume of saturated liquid |
| vg | Specific volume of saturated vapor |
Why This Tool Is Extremely Useful
✔ Saves Time
No need to flip pages or interpolate.
✔ Reduces Calculation Errors
All formulas are applied automatically.
✔ Perfect for Students
Ideal for 11th, 12th, diploma, and engineering students.
✔ Useful for Professionals
Power plant engineers and technicians can verify calculations instantly.
✔ Works on Any Device
Use it on mobile, tablet, or computer.
When to Use Superheated Steam Mode
If your steam temperature is greater than saturation temperature at the given pressure, it becomes superheated. For example:
- Pressure = 5 bar
- Saturation temperature ≈ 152°C
- If temperature = 200°C → this is superheated steam
The calculator automatically checks this condition.
15 Frequently Asked Questions (FAQs)
1. What is saturated steam?
Steam that is in equilibrium with liquid water at a given temperature and pressure.
2. What is superheated steam?
Steam whose temperature is higher than saturation temperature at the same pressure.
3. Why is hf smaller than hg?
Because hf is liquid energy, hg includes latent heat of vaporization.
4. What does hfg represent?
Energy required to convert saturated liquid into saturated vapor.
5. What is specific volume?
Volume occupied by 1 kg of substance.
6. Why does vg increase at low pressure?
Lower pressure causes steam to expand.
7. Can I use this tool in exams?
It is for practice and understanding, not allowed in most exams.
8. Is interpolation needed here?
No, all calculations are automatic.
9. What is entropy?
A measure of energy disorder in a system.
10. Why do engineers need steam tables?
To design turbines, boilers, and thermal cycles.
11. Can I calculate turbine work using this tool?
Yes, by comparing inlet and outlet enthalpy.
12. What is the critical temperature of steam?
Around 374°C.
13. Why is pressure limited to 221 bar?
That is the critical pressure of water.
14. Does this work for refrigeration systems?
It is mainly for steam and power plant analysis.
15. Is this calculator accurate?
It provides reliable engineering-level estimates for learning and practice.
Final Words
This Steam Tables Calculator is the fastest and easiest way to calculate steam properties without manual tables. Whether you are a student preparing for thermodynamics exams or an engineer verifying plant calculations, this tool gives you accurate and instant results every time.