S05 -- In-Room Terminal Systems (SI)

Very early in the design process, the HVAC design engineer must analyze and ultimately select appropriate systems, as discussed in Chapter 1. Next, production of heating and cooling is selected as decentralized (see Chapter 2) or centralized (see Chapter 3). Finally, distribution of heating and cooling to the end-use space can be done by an all-air system (see Chapter 4), or a variety of all-water or air/water systems and local terminals, as discussed in this chapter. (Note: all chapters mentioned are in the 2024 ASHRAE Handbook -- HVAC Systems and Equipment.) System Characteristics System Components and Configurations Secondary-Water Distribution Piping Arrangements Fan-Coil Unit and Unit Ventilator Systems Variable-Refrigerant-Flow (VRF) Units Chilled-Beam Systems Radiant-Panel Heating Systems Radiant-Floor Heating Systems Induction Unit Systems Supplemental Heating Units Primary-Air Systems Performance Under Varying Load Changeover Temperature Two-Pipe Systems with Central Ventilation Four-Pipe Systems Automatic Controls and Building Management Systems Maintenance Management Systems and Building System Commissioning