ASHRAE F25-2009 (I-P)

Proper design of space heating, cooling, and air conditioning requires detailed knowledge of the building envelopes overall heat, air, and moisture control performance. This chapter provides guidance in the analysis and design of building envelope assemblies for good heat, air, and moisture control performance. Guidance for designing mechanical systems is found in other chapters of the ASHRAE Handbook series. This chapter discusses the fundamentals of combined heat, air, and moisture movement as it relates to envelope assemblies.

Chapter Table of Contents

Terminology and Symbols
Environmental Hygrothermal Loads
HEAT TRANSFER
Steady-State Thermal Response
Transient Thermal Response
AIRFLOW
MOISTURE TRANSFER
Moisture Storage in Building Materials
Moisture Flow Mechanisms
COMBINED HEAT, AIR, AND MOISTURE TRANSFER
SIMPLIFIED HYGROTHERMAL DESIGN CALCULATIONS AND ANALYSES
Surface Humidity and Condensation
Interstitial Condensation and Drying
TRANSIENT COMPUTATIONAL ANALYSIS
Criteria to Evaluate Hygrothermal Simulation Results

ISBN: 978-1-933742-54-0
ISSN: 1523-7222

Units: I-P

Citation: 2009 ASHRAE Handbook -- Fundamentals: Chapter 25, Heat, Air, and Moisture Control in Building Assemblies--Fundamentals



Product Code(s): D-F252009IP

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