2020 ASHRAE Handbook Focuses on Systems and Equipment

The newly published 2020 ASHRAE Handbook – HVAC Systems and Equipment includes updated information to help system designers and operators select and use equipment that is the best fit for a particular application or scenario.

The handbook discusses various systems and the equipment (components or assemblies) they comprise, and describes features and differences. Subject matter experts on ASHRAE technical committees in each subject area have reviewed all chapters and revised them as needed for current technology and practice. A new feature of the handbook is the annotatable PDF download. Users can highlight relevant text and add their own notes and comments.

The volume contains several new updates, including:

  • Chapter 51, Dedicated Outdoor Air Systems, presents detailed information on DOAS
  • Chapter 9, Applied Heat Pump and Heat Recovery Systems, has new content on waste heat recovery, district applications and industrial process heat pumps
  • Chapter 24, Desiccant Dehumidification and Pressure Drying Equipment, has expanded content on applications, air filters and liquid strainers, plus recommendations from ASHRAE research project RP-1339 on rating equipment at altitude

Other updates that likely will impact many users include: Chapter 19, Duct Construction, extensive revisions on system leakage and air dispersion systems; Chapter 25, Mechanical Dehumidifiers and Related Components, new content on psychrometrics, outdoor air, controls and industrial dehumidifiers; Chapter 37, Solar Energy Equipment, features new data on worldwide solar technology use, plus an expanded section on photovoltaic equipment.

ASHRAE has completed distribution of complimentary copies to members and is now offering this essential resource to the public. For more information, visit ashrae.org.