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Proper design of space heating, cooling, and air-conditioningsystems requires detailed knowledge of the building envelope’s overall heat,air, and moisture performance. This chapter discusses the fundamentals ofcombined heat, air, and moisture movement as it relates to the analysis anddesign of envelope assemblies. Guidance for designing mechanical systems isfound in other chapters of the ASHRAE Handbook.

FUNDAMENTALS
Terminology and Symbols
Hygrothermal Loads andDriving Forces
HEAT TRANSFER
Steady-State ThermalResponse
Transient Thermal Response
AIRFLOW
MOISTURE TRANSFER
Moisture Storage inBuilding Materials
Moisture Flow Mechanisms
COMBINED HEAT, AIR, ANDMOISTURE TRANSFER
SIMPLIFIED HYGROTHERMALDESIGN CALCULATIONS AND ANALYSES
Surface Humidity andCondensation
Interstitial Condensationand Drying
TRANSIENT COMPUTATIONALANALYSIS
Criteria to EvaluateHygrothermal Simulation Results

No. of Pages: 18

Citation: 2021 ASHRAE Handbook–Fundamentals

Product Details

Published:
2021
Number of Pages:
18
Units of Measure:
SI
File Size:
1 file , 1.2 MB
Product Code(s):
D-F252021SI

Click here to purchase

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

FUNDAMENTALS
Terminology and Symbols
Hygrothermal Loads and Driving Forces

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: 978-1-939200-58-7 (for SI versions of chapters)
ISSN: 1523-7230 (for SI versions of chapters)

Citation: 2017 ASHRAE Handbook — Fundamentals: Chapter 25, Heat, Air, and Moisture Control in Building Assemblies–Fundamentals

Product Details

Published:
2017
ISBN(s):
9781939200587
Number of Pages:
18
Units of Measure:
SI
File Size:
1 file , 2.3 MB
Product Code(s):
D-F252017SI

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