Atlanta, Georgia: ASHRAE has informed that revisions have been included in the majority of chapters in the newly published volume, ‘2016 ASHRAE Handbook – HVAC Systems and Equipment’. The volume, the announcement said, discusses various systems and the equipment, components or assemblies that comprise and describes features and differences to help system designers and operators in selecting and using equipment.

The announcement revealed that the volume contains two major updates to a few chapters, including Chapter 12 – District Heating and Cooling, which has new content from ASHRAE research project, RP-1267 (the new District Heating Guide and District Cooling Guide), and Chapter 51 – Thermal Storage, which has new content on grid reliability, renewable power integration, heat storage, emergency cooling, water treatment and commissioning.

According to ASHRAE, the other updates that will likely impact many users include Chapter 19 – Duct Construction, in which extensive revisions on system leakage and air dispersion systems have been introduced; Chapter 33 – Furnaces, where updates for current technology and efficiency requirements have been mentioned and Chapter 49 – Unitary Air Conditioners and Heat Pumps, in which new information on United States’ regional appliance efficiency standards has been provided.

ASHRAE has listed the other revisions and additions that have been included in the new volume:

Chapter 7 – Combined Heat and Power Systems, has a new section on economic evaluation and includes an update on EU Directive 2004/8/EC.

Chapter 9 – Applied Heat Pump and Heat Recovery Systems, has new content on waste heat recovery, District Applications and industrial process heat pumps.

Chapter 18 – Variable Refrigerant Flow, has new sections on modelling and system commissioning, and an updated system design example.

Chapter 20 – Room Air Distribution Equipment, has updates for current technology, with new information on specialised components and air curtains.

Chapter 21 – Fans, has new sections on series fan operation and field performance testing, plus has added content on fan and motor efficiency grades and parallel multiple-fan operation.

Chapter 25 – Mechanical Dehumidifiers and Related Components, has new content on psychrometrics, outdoor air, controls, and industrial dehumidifiers.

Chapter 26 – Air-to-Air Energy Recovery Equipment, has new information on heat pipes and desiccant and heat wheel systems.

Chapter 28 – Unit Ventilators, Unit Heaters, and Makeup Air Units, has revisions on standards, controls and fan selection for make-up air units.

Chapter 37 – Solar Energy Equipment, has new data on worldwide solar technology use, plus an expanded section on photovoltaic equipment.

Chapter 38 – Compressors, has revisions on general theory, screw and scroll compressors and bearings, including oil-free technologies.

Chapter 43 – Liquid-Chilling Systems, has revised content on refrigerant selection and global warming potential.

Chapter 44 – Centrifugal Pumps, has new content on vertical-, inline-, split-coupled pumps; hydronic system pump selection and differential pressure control.

Chapter 45 – Motors, Motor Controls, and Variable-Frequency Drives, has updates on standards, bearing currents, and permanent-magnet motors.

Chapter 47 – Valves, has new content on control valve sizing, electronic actuators and ball-, butterfly-, flow-limiting- and pressure-independent control valves.

“Nearly 90% of the chapters have undergone revision since the 2012 volume was published,” said Forrest Yount, Volume Chair of ASHRAE. “That means there is a lot of new material for users to become familiar with. Many chapters have incorporated the results of recent research projects funded by ASHRAE.”

ASHRAE revealed that the new volume is being published in a bound print volume, in electronic format on a CD-ROM and online, in two editions – one using inch-pound (I-P) units of measurement, the other using the International System of Units (SI).

ASHRAE informed that further information is available at www.ashrae.org/bookstore.