Table of Contents
- 1 How fast does steam move?
- 2 How do you calculate steam per hour?
- 3 How do you calculate steam flow rate?
- 4 Does hotter steam move faster?
- 5 What temperature is steam at 150 psi?
- 6 How much steam can flow through a pipe?
- 7 Is steam turbine renewable?
- 8 How hot is 50lb steam?
- 9 How long does it take for a boiler to produce steam?
- 10 What is the fastest steam locomotive?
How fast does steam move?
Steam travels at very high velocities, normally limited to between 6,000 and 10,000 ft/min, but sometimes as fast as 20,000 ft/min (about 230 mph).
How do you calculate steam per hour?
- ms: Mean rate of condensation of steam in kg/hr.
- W: Total weight of pipe plus flanges and fittings in kg.
- Ts: Steam temperature oC.
- Tamb: Ambient temperature.
- Cp: Specific heat of pipe material in kj/kgoC.
- hfg: Enthalpy of evaporation or saturated enthalpy at operating pressure in kj/kg.
- t: Time of warming-up in minutes.
Does steam move faster than water?
The hotter water molecules become, the faster they move, turning from water (their liquid phase) to steam (their gas phase). When liquid water turns to gas, not only do the molecules move much faster, they also are spaced much farther apart.
How do you calculate steam flow rate?
The feedwater flow rate can be calculated from steam mass flow and blowdown rate:
- Blowdown Mass Flow = Feedwater Mass Flow * Blowdown Rate.
- Steam Mass Flow = Feedwater Mass Flow – Blowdown Mass Flow.
- Steam Mass Flow = Feedwater Mass Flow – Feedwater Mass Flow * Blowdown Rate.
Does hotter steam move faster?
Think about it. If the amount of steam the boiler produces in one hour is fixed (which it is). The lower the pressure, the faster the steam will travel.
Why is steam so powerful?
The water is still nearby, but it’s now in a gaseous form called steam. This form of water is also called water vapor, and it’s very powerful stuff. This is because steam has a lot of energy. This is because as you continue to add more heat, more water molecules turn to vapor, and then you’re not heating them anymore!
What temperature is steam at 150 psi?
Saturated Steam Temperatures
| Pressure | Temperature | Temperature |
|---|---|---|
| (p.s.i) | (°F) | (°C) |
| 150 | 365.90 | 185.5 |
| 155 | 368.20 | 186.8 |
| 160 | 370.60 | 188.1 |
How much steam can flow through a pipe?
As a general rule, a velocity of 25 to 40 m/s is used when saturated steam is the medium. 40 m/s should be considered a practical limit, as above this, noise and erosion will take place particularly if the steam is wet.
Can steam turn back into water?
Evaporation happens fastest when water is heated to 212°F (100°C). This is the boiling point of water. When water is boiling, we call the hot water vapor steam. When steam or water vapor cools down, it turns back to liquid water.
Is steam turbine renewable?
Steam from renewable sources Providing a future-proof source of electricity and contributing to lower CO₂ emissions, power produced from biomass or solarthermal heat is increasingly economically viable. Hundreds of Siemens steam turbines powered by steam from renewable fuel have been installed worldwide.
How hot is 50lb steam?
For example, saturated steam at 50 PSIG has a temperature of 298°F.
How fast does a steam train travel?
This shows the wonderful convenience which these steamers offer to the traveling public. The fastest runs were over 20 knots per hour, which is equal to 23 English miles, and exceeds the speed of transcontinental trains. For the whole season on her trips to the eastward she averaged 19.12 knots, and to the westward 18.91 knots per hour.
How long does it take for a boiler to produce steam?
If you raise the pressure, the amount of heat coming out of that fire won’t increase or decrease. It can’t be more than what the nameplate states. So in one hour, that boiler will produce a very definite amount of steam. It won’t do this in 50 minutes, or in 70 minutes. It will do it in exactly one hour.
What is the fastest steam locomotive?
Designed by Sir Nigel Gresley and built by Doncaster, the Mallard is a 4–6–2 Pacific Whyte notation A4 locomotive. Its relative is another famous steam locomotive who hit a record speed of 103 miles per hour, that being the Flying Scotsman, who is a 4–6–2 Gresley A1/A3 Pacific also designed
How much space does a pound of steam take up?
Now, one pound of water will occupy about amount of the space that’s inside a pint glass. One pound of steam at zero psi will take up 27 cubic feet (that’s a cubic yard). Raise the boiler pressure to 10-psi and that same pound of steam will take up just 16 cubic feet.