Refrigeration Loop: Pressure Measurements and Corresponding Components

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SUMMARY

The discussion centers on the correct pressure measurements in a refrigeration loop, specifically regarding the condenser and evaporator. Participants clarified that the pressure reading after the expansion valve should indeed correspond to the condenser, while the pressure upstream of the expansion valve is associated with the evaporator. This understanding aligns with standard refrigeration cycle principles, confirming the initial confusion was valid. The reference to the Wikipedia article on heat pumps and refrigeration cycles provided additional context and validation for the participants' conclusions.

PREREQUISITES
  • Understanding of refrigeration cycle components, including condensers and evaporators.
  • Familiarity with pressure measurement techniques in thermodynamic systems.
  • Knowledge of the function of expansion valves in refrigeration systems.
  • Basic principles of heat pumps and refrigeration cycles.
NEXT STEPS
  • Study the operation and characteristics of refrigeration cycle components, focusing on condensers and evaporators.
  • Learn about pressure measurement techniques specific to refrigeration systems.
  • Research the role of expansion valves in controlling refrigerant flow and pressure.
  • Explore detailed explanations of heat pumps and refrigeration cycles through academic resources or textbooks.
USEFUL FOR

Students in thermodynamics, HVAC technicians, and engineers involved in refrigeration system design and analysis will benefit from this discussion.

manatou
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Homework Statement



I have just done a lab with a refrigeration loop, and I'm unsure of which pressures correspond to which parts of the loop. The hand out says to assume the pressure across the condenser and evaporator are constant, and to use the two pressure guages to measure the pressure. Where I'm confused is it says to use the pressure reading after the expansion valve for the condenser, and the pressure upstream of the expansion valve for the evaporator.

Is this the wrong way around? Intuitively it seems wrong, and the tutor running the lab was unsure as he was filling in for the normal tutor.


Homework Equations





The Attempt at a Solution

 
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Thanks for the link, done a bit more reading, seems like you're right. good to have it confirmed.
 

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