Brandon Davis

[Brandon Davis]

Thanks for the clarifications Susan.

I am interested in gaining a deeper understanding of the mechanism of the infinite switch that controls gas flow rates.

Is it an mechanical valve? Perhaps it is an electronic device such as a variable potentiometer that could opens an electromechanical valve or solenoid to control the physical flow of gas.

[Brandon Davis]

Brilliant it really makes a lot of sense. The capillary tube maintains the pressure built up by the compressor. It is only at the point that the capillary tubes release the cooler liquid into the lower pressure evaporator coils does the phase change from liquid to gas occurs. Heat is sucked up from the surrounding air to directly facilitate the action of this phase change.
Do I have it better now?
If so, I basically feel comfortable closing this topic. Although I do have a question about if the metering device is located between the capillary tubes and the evaporator. Even though I quickly googled it, I do feel unclear about its purpose. Am I ready for that yet?

[Brandon Davis]

Okay, Thank you, Sam for your thorough answer.
It is beginning to make more sense to me. The refrigerant leaves the compressor still as a hot/warm gas. Because it is being compressed into a finite space within the condenser, this gas, even though it is very hot, becomes a liquid under pressure. This pressurized liquid is able to lose heat, via the airflow over the condenser via the condenser fan. Outside of the capillary tubes there is an increased volume available to be occupied. This lowers the pressure on the liquid allowing it to boil back into a gas. This lowers the average speed of motion of the particles (temperature). This cooler gas is now ready to enter the evaporator coils to absorb heat from the warm returning air pulled in from the evaporator fan. This cooler air now fills the freezer and a portion of it is “pushed” through the damper via the freezers’ positive pressure created by the evaporator fan.

Does the return duct have to be located at a higher position than the damper to ensure the warmest air in the refrigerator is returned rather than colder air below?

-BSD

[Brandon Davis]

Thank you, Nice to chat with you Susan.
My mother much prefers the warmth and has regularly makes extended stays in Trinidad during the winter months.
My father seems to be able to put up with it much better, I think it is because he grew up in Queens in New York. He thinks the cold weather has its pro’s and con’s.
Pro: it’s not so hot.
Con: it’s kind of cold.

Thank you for the reference to the technical team member.

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