Perry’s Chemical Engineers’ Handbook, Eighth Edition

Section 12: Psychrometry, Evaporative Cooling, and Solids Drying

Overview

Larry R. Genskow Technical Director, Corporate Engineering Technologies, The Procter & Gamble Company; Advisory Associate Editor, Drying Technology An International Journal; Member, International Advisory Committee, International Drying Symposia (Section Editor)

Wayne E. Beimesch, Ph.D. Technical Associate Director, Corporate Engineering, The Procter & Gamble Company; Member, The Controlled Release Society; Member, Institute for Liquid Atomization and Spray Systems

John P. Hecht, Ph.D. Senior Engineer, The Procter & Gamble Company

Ian C. Kemp, M.A. (Cantab), C.Eng. Senior Technical Manager, GlaxoSmithKline; Fellow, Institution of Chemical Engineers; Associate Member, Institution of Mechanical Engineers

Tim Langrish, D.Phil. School of Chemical and Biomolecular Engineering, The University of Sydney (Australia)

Christian Schwartzbach, M.Sc. Manager, Technology Development (retired), Niro A/S

(Francis) Lee Smith, Ph.D., M.Eng. Principal, Wilcrest Consulting Associates, Houston, Texas; Member, American Institute of Chemical Engineers, Society of American Value Engineers, Water Environment Federation, Air and Waste Management Association (Biofiltration)

PSYCHROMETRY

Terminology

12-4

Calculation Formulas

12-5

Relationship between Wet-Bulb and Adiabatic Saturation Temperatures

12-5

Psychrometric Charts

12-6

Examples Illustrating Use of Psychrometric Charts

12-8

Example 1: Determination of Moist Air Properties

12-8

Example 2: Air Heating

12-8

Example 3: Evaporative Cooling

12-9

Example 4: Cooling and Dehumidification

12-10

Example 5: Cooling Tower

12-10

Example 6: Recirculating Dryer

12-12

Psychrometric Calculations

12-13

Psychrometric Software and Tables

12-13

Psychrometric Calculations Worked Examples

12-14

Example 7: Determination of Moist Air Properties

12-14

Example 8: Calculation of Humidity and Wet-Bulb Condition

12-15

Example 9: Calculation of Psychrometric Properties of...

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