Manual P provides detailed guidance on how to use the Psychrometric chart to map any type of heating and cooling process. The information also teaches readers how to use these maps to calculate heating, cooling, humidification, and dehumidification loads. This complete reference also includes sample problems and solutions for sensible heating and sensible cooling processes, humidification and dehumidification processes, room sensible heat ratio and coil sensible heat ratio. 55 pp.