Download Electricity and Controls for HVAC R 6th Edition by Stephen L Herman and Bennie L Sparkman

Electricity  and  Controls  for  HVAC/R is  written  with the assumption that the student has no prior knowl-edge of electricity or control systems. Basic electrical theory  is  presented  in  a  practical,  straightforward manner.  Mathematical  explanations  are  used  only when necessary to explain certain concepts of elec-tricity.  Each  unit  starts  with  the  objectives  of  the unit and ends with a summary of important facts. The text begins with the study of basic electri-cal theory and progresses to series circuits, par-allel  circuits,  alternating  current,  inductive circuits, and capacitive  circuits.  The  text  also includes  information  on  different  types  of  three-phase  services  found  in  industrial  and  commercial locations as well as single-phase residential services. ndividual devices and components common to the air  conditioning,  heating,  and  refrigeration  field are  presented  in  a  practical  manner.  Devices  are explained  from  a  standpoint  of  how  they  operate and  how  they  are  used.  The  text  contains  testing procedures  for  many  of  the  devices  covered.