Chapter 28: Climatic Design Information
This chapter and the data on the accompanying CD-ROM provide the climatic design information for 4422 locations in the United States, Canada, and around the world. This is an increase of nearly 3000 stations from the 2001 ASHRAE Handbook Fundamentals. The large number of stations, along with the addition of several new table elements, made printing the tables impracticable. Consequently, only the design conditions for Atlanta, GA, appear in this printed chapter to illustrate the table format. An appendix to this chapter lists all 4422 stations, the complete data tables for which are contained on the CD-ROM.
This climatic design information is commonly used for design, sizing, distribution, installation, and marketing of heating, ventilating, air-conditioning, and dehumidification equipment, as well as for other energy-related processes in residential, agricultural, commercial, and industrial applications. These summaries include values of dry-bulb, wet-bulb, and dew-point temperature, and wind speed with direction at various frequencies of occurrence. Sources of other climate information of potential interest to ASHRAE members are described later in this chapter.
Design information in this chapter was developed largely through research project RP-1273 (ASHRAE 2004a). The information includes design values of dry-bulb with mean coincident wet-bulb temperature, design wet-bulb with mean coincident dry-bulb temperature, and design dew-point with mean coincident dry-bulb temperature and corresponding humidity ratio. These data allow the designer to consider various operational peak conditions. Design values of wind speed allow for the design of smoke management systems in buildings (ASHRAE 1994; Lamming and Salmon 1998).