Abstract

This chapter introduces a graphical representation of air-conditioning processes called the psychrometric chart. Many of the air-conditioning processes involve air that is experiencing energy changes. These changes arise from changes in the air's temperature and its moisture content. The psychrometric chart is an industry-standard tool that is used to visualize the interrelationships among dry air, moisture, and energy. The chapter discusses an air-conditioning system and examines how it can be adapted to serve many spaces. The air-conditioning system provides a single source of air with uniform temperature to the entire space, controlled by one space thermostat and one space humidistat. The design factors for choosing an air-conditioning system include: building design, location issues, utilities (availability and cost), indoor requirements and loads, and client issues.

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