Refrigeration and air conditioning is usually taught in halves. One half is field procedure handed down without the physics that explains it, so a technician learns to look for ten degrees of subcooling without ever learning what subcooling reveals. The other half is thermodynamic theory taught away from the equipment, so a graduate can derive a cycle efficiency but has never watched a compressor short-cycle. Each half works until a system does something the procedure does not cover. Then one person is guessing and the other is sizing on paper, and the move toward lower-global-warming-potential working fluids is widening that gap rather than closing it.

This handbook keeps theory and practice in the same hand. It builds the thermodynamics and heat transfer from first principles, then follows the working fluid through every component a technician actually touches, so the number on the gauge and the reason behind it arrive together. Inch-pound units lead, because that is how equipment is rated and field instruments are read, with metric equivalents alongside.

Inside, you will be able to:

Plot a real cycle from field measurements and calculate refrigerating effect, work of compression, heat of rejection, capacity, and coefficient of performance

Separate the effects of superheat, subcooling, pressure drop, isentropic efficiency, and clearance volume, and quantify what each one costs

Work moist-air problems on the chart and carry them through to cooling and heating load calculations for real buildings

Analyze every component in the order the fluid meets it, and size ducts and lines to real friction, velocity, and oil-return limits

Test, evacuate, charge by superheat or subcooling, balance airflow, and commission a system with documentation that stands up later

Diagnose systematically using superheat and subcooling as primitives, checking compression ratio, non-condensables, approach, and split rather than working from a symptom list

Key topics: the two laws and the overall heat-transfer coefficient; fluid classification, safety groups, environmental metrics, glide, and the current regulatory transition; ideal and actual cycles; psychrometrics; load calculation; compressors and capacity control; heat rejection and cooling towers; expansion valves, fixed restrictors, and defrost; duct design, fan laws, and balancing; line sizing and oil return; absorption and thermoelectric cooling; heat pumps, balance point, and seasonal performance; controls, motors, and variable-speed drives; installation and commissioning; troubleshooting and maintenance. Every chapter carries learning objectives, fully worked examples, practice problems, and an answer key, and six appendices, a glossary, a symbol list, and an index keep it useful as a bench reference.

Written for apprentices and working service technicians who want the reasoning under the procedure, and students, instructors, and practicing engineers who want design methods traced to their physical basis. Comfortable algebra and a first exposure to physics are enough to begin. Because codes and regulations change, safety-critical values should be confirmed against the governing edition, and this book supports rather than replaces licensed professional judgment.

Open this handbook and start reading the machine instead of guessing at it.

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We first started out as “The Paperback Exchange,” a chain of physical bookstores where we would part exchange your beloved books for new stories to transport you to faraway places. However, as shopping started to evolve to online shops and marketplaces, we bid our stores goodbye to become “PBShop.” This transition has only allowed us to blossom as we now ship thousands of titles to book lovers across the globe. We pride ourselves in being a community of local book lovers which allows our passion and devotion to shine in everything we do. In 2020 we not only celebrated our 20th birthday but our 1st birthday as being completely employee owned after becoming an E.O.T in September 2019. We are proud to be different and embrace standing apart on a book mountain by working from a virtual inventory which allows us to provide thousands of books that may be difficult to get for your bookshelf or your studies. Working with a number of different suppliers allows us to explore other avenues such as puzzles, sheet music and even stationery so we really do have something for everyone. Life is about being versatile in all realms of existence. If this is your first visit or you are a returning customer, we would like to welcome you to the PBShop family, for there is no friend as loyal as a book. We are a company who put our customers at the centre of everything we do as we understand the importance of reading because once you learn to read, you will forever be free. There are a whole lot of things in this world of ours that we are yet to explore, which is why we will forever inspire curious minds.…

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MODERN REFRIGERATION AND AIR CONDITIONING HANDBOOK

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Sinopsis