Vortex Tube for cabinet cooling

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Discussion Overview

The discussion revolves around the effectiveness of a vortex tube for cooling a cabinet containing electrical equipment. Participants explore various factors related to the cooling capacity, operational requirements, and optimization of the vortex tube settings. The scope includes technical considerations, project guidance, and quantification of heat flow.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant suggests examining the cooling capacity of the cabinet and whether the vortex tube is necessary, along with the amount of heat that needs to be removed.
  • Another participant emphasizes the importance of considering the cost of operation and optimizing the vortex tube settings to minimize it.
  • A participant identifies the problem as a heat flow issue and proposes quantifying heat flow using units such as watts, BTU/hour, or calories/second.
  • There is a discussion about the ratings of the vortex tube and the components to be cooled, including the conduction through the cabinet walls.
  • The original poster mentions using watts for measurement and notes that the vortex tube has different vortex generator inserts with varying BTU/hour ratings, which will be part of determining optimal settings.
  • Another participant suggests determining the most temperature-dependent component to help establish the threshold temperature for the thermostat.

Areas of Agreement / Disagreement

Participants express varying viewpoints on the importance of cost considerations, the approach to quantifying heat flow, and the specifics of optimizing the vortex tube settings. The discussion remains unresolved with multiple competing views on how best to proceed with the project.

Contextual Notes

Limitations include the need for further clarification on the specific heat dissipation capabilities of the cabinet and the operational parameters of the vortex tube. There are also unresolved questions regarding the interaction between the cooling system and the thermal characteristics of the cabinet and its contents.

moobs05
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Hi, I'm a mechatronics student and I am currently working on a project on the effectiveness of a vortex tube to cool a cabinet. The cabinet has a thermostat inside and if the temperature exceeds a threshold, an air compressor is turned on, causing the vortex tube to cool the cabinet. The cabinet has a power in (Pin) and drives 2 motors (Pout1 and Pout2). Inside the cabinet, there are pieces of electrical equipment which have their own maximum ambient temperature rating in which they can operate in; some may even dissipate small amounts of heat.

The factors that need to be examined and quantified are:1.The cooling capacity of the cabinet (i.e. how much heat can it dissipate by itself, does it even require the vortex tube, if so, how much heat needs to be removed),

2.Assuming it's required, can a vortex tube remove the amount of heat? If so, determine the optimum settings of the vortex tube,

3.The peak flow rate,

4.The required air pressure,

5.The air consumption requirementsSo far I am thinking of examining the Pin ,Pout1 and Pout2 and assuming that the difference is heat dissipated. I have looked at the maximum allowable operating environment of the electrical devices.

I have access to the data of all the electronic components and the physical cabinet/vortex tube set up. I have placed a couple of temperature loggers inside the cabinet during operation for a few weeks to get an indication of the temperatures which can be expected. I am just after some guidance as to how to best approach this project, even though I've taken some steps (those I've mentioned), I still feel a bit lost and scattered. Any help would be greatly appreciated. I have attached a picture of the set up.
 

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Surely you must consider the cost?
 
moobs05 said:
I have access to the data of all the electronic components
Seems to me this is a heat flow problem.
Why not start quantifying that ?
What units will you use - watts, BTU/hour, calories/second?
How did they rate your vortex tube? And the components to be cooled ? And conduction through cabinet walls?
 
Doug Huffman said:
Surely you must consider the cost?
The cost of operation is minimised by optimising the settings of the vortex tube
 
jim hardy said:
Seems to me this is a heat flow problem.
Why not start quantifying that ?
What units will you use - watts, BTU/hour, calories/second?
How did they rate your vortex tube? And the components to be cooled ? And conduction through cabinet walls?

I will be using Watts. The vortex tube has a number of different vortex generator inserts which all have a different ratings in BTU/hour. Selecting the best one is part of determining the optimal vertex settings so the cooling requirements are met with the least amount of air. The components inside have a temperature rating in degrees C, I was planning on determining the most temperature dependent component which will thus help determine the threshold temperature of the thermostat.
 

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