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  2. Column: Older drivers reveal strategies for passing that ...

    www.aol.com/news/column-older-drivers-reveal...

    Study guides and strategies: Older drivers have a few tips for those who must take the dreaded California DMV renewal test, with all its 'obscure and ridiculous' questions

  3. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    The HVAC industry was historically regulated by the manufacturers of HVAC equipment, but regulating and standards organizations such as HARDI (Heating, Air-conditioning and Refrigeration Distributors International), ASHRAE, SMACNA, ACCA (Air Conditioning Contractors of America), Uniform Mechanical Code, International Mechanical Code, and AMCA ...

  4. R-410A - Wikipedia

    en.wikipedia.org/wiki/R-410A

    R-410A was invented and patented by Allied Signal (later Honeywell) in 1991. [5] Other producers around the world have been licensed to manufacture and sell R-410A. [6] R-410A was successfully commercialized in the air conditioning segment by a combined effort of Carrier Corporation, Emerson Climate Technologies, Inc., Copeland Scroll Compressors (a division of Emerson Electric Company), and ...

  5. How to ace your written California driver’s test on ... - AOL

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    About half of Californians fail the DMV written test the first time. Here are some helpful tips on how to avoid having to retake it. How to ace your written California driver’s test on the first try

  6. ASHRAE Handbook - Wikipedia

    en.wikipedia.org/wiki/ASHRAE_Handbook

    It began in 1922 as the ASH&VE Guide. In 1973 it became the ASHRAE Handbook, and in 1985 separate publication of inch-pound ( I-P ) and international system ( SI ) units versions of the volumes began.

  7. Refrigeration - Wikipedia

    en.wikipedia.org/wiki/Refrigeration

    Commercial refrigeration. Refrigeration is any of various types of cooling of a space, substance, or system to lower and/or maintain its temperature below the ambient one (while the removed heat is ejected to a place of higher temperature). [1] [2] Refrigeration is an artificial, or human-made, cooling method. [1] [2]

  8. List of refrigerants - Wikipedia

    en.wikipedia.org/wiki/List_of_refrigerants

    Molecular mass in atomic mass units; Normal boiling points for pure substances, bubble and dew points for zeotropic blends, or normal boiling point and azeotropic temperature for the azeotropic blends, at 101,325 Pa (1 atmosphere) and in degrees Celsius; Critical temperature in degrees Celsius; Absolute critical pressure in kilopascals

  9. Refrigerant reclamation - Wikipedia

    en.wikipedia.org/wiki/Refrigerant_reclamation

    The final rule published on May 14, 1993, requires that refrigerant sold to a new owner be reclaimed to the AHRI Standard 700 of purity by a certified reclaimer (Sec. 82.154(g) and (h) referencing standard in Sec. 82.164 and the definition of reclaim found in Sec. 82.152).

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