Ranque-Hilsch (vortex) tube with water as fluid

In summary, the possibility of using water instead of air as an injected fluid for a cool device was discussed. The differences in density and viscosity between air and water were noted, as well as the lack of information on the use of water in this context. The physical principle behind the cooling process was also mentioned as a determining factor in whether or not water could be used successfully.
  • #1
Termotanque
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I'm very interested in building this cool device, and was wondering if water could be used instead of air as the injected fluid.

The main differences I notice are the much larger density, and thus possibly smaller angular velocity. And higher viscosity, which could mean a smaller radial gradient of temperature.

I've also had no luck finding people using water instead of air, but alas no explanation why not either.

If the physical principle why it works was known, one could predict if water would work or not.

What do you think or know?
 
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  • #2
Air is compressible and water isn't, which is why air cools when expanded.
 

What is a Ranque-Hilsch (vortex) tube with water as fluid?

A Ranque-Hilsch (vortex) tube with water as fluid is a device that uses the principle of the Ranque-Hilsch effect to separate a compressed gas into two streams of different temperatures, one hot and one cold. It works by creating a swirling vortex of air or gas within the tube, which causes the gas to separate based on its molecular weight.

How does a Ranque-Hilsch (vortex) tube with water as fluid work?

The tube works by using a tangential inlet to introduce compressed gas, typically air, into the tube. This creates a swirling vortex within the tube, with the gas moving towards the hot end and the cold end. The hot gas moves towards the center of the vortex and then exits through a separate outlet, while the cold gas moves towards the outer wall and exits through a different outlet. The separation of the gas streams is based on the different velocities and molecular weights of the gas particles.

What are the applications of a Ranque-Hilsch (vortex) tube with water as fluid?

One of the most common applications of a Ranque-Hilsch (vortex) tube with water as fluid is in refrigeration systems. It can also be used in industrial processes for cooling, drying, and separating gases. Additionally, it has been studied for potential use in renewable energy systems, such as harnessing waste heat from power plants.

What are the advantages of using water as the fluid in a Ranque-Hilsch (vortex) tube?

Using water as the fluid in a Ranque-Hilsch (vortex) tube has several advantages. Water is readily available and inexpensive, making it a cost-effective option. It also has a high heat capacity, which allows for more efficient cooling. Additionally, using water as the fluid can reduce the risk of explosion compared to using other gases.

What are the limitations of a Ranque-Hilsch (vortex) tube with water as fluid?

One of the main limitations of using water as the fluid in a Ranque-Hilsch (vortex) tube is that it can freeze at low temperatures, limiting its use in cold environments. Additionally, the efficiency of the tube is affected by the flow rate and inlet pressure of the compressed gas. It may also require regular maintenance to prevent buildup of mineral deposits from the water.

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