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  1. Replies
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    The book I was reading is: Refrigeration & Air...

    The book I was reading is:

    Refrigeration & Air Conditioning Technology 4th Edition
    by Whitman * Johnson * Tomczyk

    Copyright 2000

    Not exactly the most current issue of this book but still...
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    8,873

    Triple Evacuation

    As and HVAC student reading a book from the field I learned about the concept of triple evacuation today. Im a little confused as to why this is necessary. It seems to me that you evacuate once and...
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    1,934

    Wow, most informative! Thank you very much. Now,...

    Wow, most informative! Thank you very much. Now, when you say condensers will have to be upgraded. Do you mean a bigger condenser or upgraded in some other way? Im thinking higher head pressure...
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    1,934

    Refrigerant Conversion

    I would like to convert a deli cooler from an unknown refrigerant to R-134A. On the it compressor says R-12 on but on the thermal expansion valve it says R-401A. This kind of suggests its been...
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