Thermodynamics throttling device

In summary, steam at 550 bar and 475 °C undergoes a throttling expansion to 1 bar in a steady-state process. The temperature of the steam after the expansion is 99.6 °C according to steam tables, as the temperature of saturation at 1 bar is 99.6 °C. To calculate the internal energy of the fluid, you can use the formula h2 = h1, which relates the internal energy to the enthalpy.
  • #1
christy lam
1
0

Homework Statement


Steam at 550 bar and 475 °C undergoes a throttling expansion to 1 bar in a steady-state process. What will be the temperature of the steam after the expansion? Calculate the internal energy of the fluid.

Homework Equations


h2 = h1

The Attempt at a Solution


the temperature of the steam after the expansion is 99.6c according to steam tables as temperature of saturation at 1 bar is 99.6c so the temperature cannot be below that if the outlet fluid has to be steam?
no idea how to find the internal energy though...
 
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  • #2
christy lam said:

Homework Statement


Steam at 550 bar and 475 °C undergoes a throttling expansion to 1 bar in a steady-state process. What will be the temperature of the steam after the expansion? Calculate the internal energy of the fluid.

Homework Equations


h2 = h1

The Attempt at a Solution


the temperature of the steam after the expansion is 99.6c according to steam tables as temperature of saturation at 1 bar is 99.6c so the temperature cannot be below that if the outlet fluid has to be steam?
no idea how to find the internal energy though...

How is the internal energy of the steam related to its enthalpy? There is a handy formula for this which you haven't included in the Relevant equations.
 

FAQ: Thermodynamics throttling device

What is a thermodynamics throttling device?

A thermodynamics throttling device is a mechanical device used to control the flow of a fluid in a thermodynamic system. It works by reducing the pressure and temperature of the fluid as it passes through, resulting in a decrease in its energy and velocity.

How does a thermodynamics throttling device work?

A thermodynamics throttling device works by creating a restriction in the flow of a fluid, causing it to undergo a process known as throttling. This process reduces the pressure and temperature of the fluid, allowing it to expand and decrease in energy.

What is the purpose of a thermodynamics throttling device?

The purpose of a thermodynamics throttling device is to control the flow of a fluid in a thermodynamic system, allowing for the regulation of temperature, pressure, and energy levels. It is commonly used in refrigeration and air conditioning systems, as well as in industrial processes.

What are the different types of thermodynamics throttling devices?

There are several types of thermodynamics throttling devices, including valves, nozzles, and orifices. These devices can be further categorized as either fixed or variable throttling devices, depending on their ability to control the flow rate of the fluid.

What are the advantages of using a thermodynamics throttling device?

The use of a thermodynamics throttling device offers several advantages, including the ability to regulate and control the flow of a fluid, decrease in energy consumption, and improved system efficiency. It also allows for precise control of temperature and pressure in a thermodynamic system.

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