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Thread: What is Subcooling?

  1. #1
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    What is Subcooling?

    What is subcooling and what affects the range in degrees on the suction side?

    Little confusing in relation to Superheat?


    Tia

    Thanks In Advance

  2. #2
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    sub-cooling (liquid line) down---- super-heating (suction line) up

    suggested reading:

    http://www.bacharach-training.com/norm/superheat.htm
    Last edited by grismangki; 08-10-2009 at 03:59 AM.

  3. #3
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    It is the amount of heat removed from a refrigerant after it has already condensed to a liquid.
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  4. #4
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    See this article for additional information.

    http://contractingbusiness.com/service/cb_imp_44702
    Terry McIver, Content Director, ContractingBusiness.com magazine.

  5. #5
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    Subcooling is when heat is removed from a substance. Superheat is when heat is added.

  6. #6
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    Quote Originally Posted by Joe Harper View Post
    Subcooling is when heat is removed from a substance. Superheat is when heat is added.
    Joe got one more vote

  7. #7
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    Subcooling is done in the condenser, the refrig. enters the condenser tubing as a heated vapor, as it travels through the coils of the condenser the fan removes the heat and at the last few turns of the condenser coils it has removed enough heat to turn the vapor into a liquid refrig. again. To measure the subcooling you need to put temp. probe right before the metering device, typically the only time you need the subcool is if you are running a TXV metering device. Since it regulates the refrig. it controls the superheat and so when you put your gauge on the high side and lets say your temp. is 110/225psig (R-22) and your probe reads 100 then you have a subcool of 10 which is a good subcool. Buckey4ds

  8. #8
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    Thumbs up

    Subcooling is the new Ice treat from Subway Restaurants. Eat Fresh!!

  9. #9
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    Let's clarify that Joe -

    Subcooling results when heat is removed from a previously condensed substance.

    Superheat results when heat is added to a previously vaporized substance.

    PHM
    --------



    Quote Originally Posted by Joe Harper View Post
    Subcooling is when heat is removed from a substance. Superheat is when heat is added.
    PHM
    --------
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  10. #10
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    I am glad someone posted this question. One of those "I didn't know who to ask." questions. A little too busy running my business most times to thank about it but I am glad i found this!!
    Last edited by Dad; 11-16-2019 at 11:15 AM.

  11. #11
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    Quote Originally Posted by buckey4ds View Post
    Subcooling is done in the condenser, the refrig. enters the condenser tubing as a heated vapor, as it travels through the coils of the condenser the fan removes the heat and at the last few turns of the condenser coils it has removed enough heat to turn the vapor into a liquid refrig. again. To measure the subcooling you need to put temp. probe right before the metering device, typically the only time you need the subcool is if you are running a TXV metering device. Since it regulates the refrig. it controls the superheat and so when you put your gauge on the high side and lets say your temp. is 110/225psig (R-22) and your probe reads 100 then you have a subcool of 10 which is a good subcool. Buckey4ds
    Does that mean ALL other metering devices need not worry about SubCooling?

  12. #12
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    You do realize you are responding to a post that is ten years old, right?


    Quote Originally Posted by TechmanTerry View Post
    Does that mean ALL other metering devices need not worry about SubCooling?
    I do a triple evac with nitro to remove non condensables.

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    Quote Originally Posted by BBeerme View Post
    You do realize you are responding to a post that is ten years old, right?
    NO! I do now!! LOL,Tks

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    Better late than never.

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    Quote Originally Posted by ThomOen View Post
    I am glad someone posted this question. One of those "I didn't know who to ask." questions. A little too busy running my business most times to thank about it but I am glad i found this!!
    Please do not post in old threads. This one is 10 years old.

    Please start your own thread asking the question, as most of the thread participants that already exist in this thread are no longer participating in the forum.
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  16. #16
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    Quote Originally Posted by ThomOen View Post
    I am glad someone posted this question. One of those "I didn't know who to ask." questions. A little too busy running my business most times to thank about it but I am glad i found this!!
    I'll assume you're not in the thermal dynamics business

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