ABSTRACT
This chapter starts by classifying hydronic systems and then describing various common piping layouts (series, one-pipe, two-pipe, and four-pipe layouts). Next, we address different types of the traditional terminal units, namely, convectors, cabinet heaters, and fan-coil units, which transfer heat from the circulating fluid to the room air primarily by convection. This is followed by a description of different types of low-temperature radiant panels for heating and cooling (ceiling, floor, and wall mounted) where the primary mode of heat transfer is by radiation. Heat analysis equations along with guidelines for good design practice are provided with solved examples. We then discuss auxiliary equipment such as service hot water and steam equipment along with expansion tanks that are a critical component in closed systems. We present the basic functioning of two-way and three-way valves to modulate flow through coils and other heat transfer equipment. Subsequently, piping networks meant for multiple-chiller plants providing cooling to several buildings in a campus are described along with ways to control them under variable load conditions. Finally, we provide a brief overview of the benefits, types, design approaches, and technologies relevant to both ice and chilled water cool storage systems.
