Fluid is a refrigirant and pressurized like in most air conditioners

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Discussion Overview

The discussion revolves around the practical aspects of testing an evaporator in a refrigeration system, specifically in the context of air conditioning units. Participants explore mechanisms to prevent leakage between pipes of varying diameters and the necessary components for effective testing of the evaporator's capacity.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant inquires about mechanisms to avoid leakage when connecting two pipes of different diameters, specifically in a system using pressurized refrigerant.
  • Another participant asserts that testing an evaporator requires a complete air conditioning cycle, including components like the condenser and compressor.
  • A participant questions how to minimize refrigerant left in the heat exchanger after testing.
  • There is a suggestion that some refrigerant may inevitably be lost during the process, though this remains uncertain.

Areas of Agreement / Disagreement

Participants do not reach consensus on the necessary components for testing the evaporator, and there is uncertainty regarding the loss of refrigerant during the process. The discussion remains unresolved on these points.

Contextual Notes

Participants have not fully defined the mechanisms for preventing leakage or the specific design considerations for ensuring no refrigerant remains in the evaporator. There are also assumptions about the completeness of the air conditioning cycle required for testing.

plucker_08
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situation:

1. i have 2 pipes. the source is pipe A and i will connect it to pipe B. the diameter of Pipe varies and has a range, let's say around 1 in. pipe A can be larger than pipe B. what mechanism shall i i use in order to avoid leakage during the process? the fluid is a refrigirant and pressurized like in most air conditioners (window-type)

2. i have this evaporator and i want to test its capacity. do i need to have the complete aircon parts (condenser, compressor, expansion device, etc) or just a refrigirant tank, pump and an air source.?

3. if the test is done, what design shall i use to be sure that there is no refrigirant left in the evaporator and it goes back to the tank?
 
Last edited:
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1. Your first question is unfinished...

2. You can't test an evaporator without a functional air conditioning cycle.

3. Not sure about this one - I guess I always thought a little bit of the gas was lost.
 
so, what will i do to minimize the refrigirant left in the heat exchanger?
 
i've edited the 1st post,,,
 

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