Applied Building Physics
eBook - ePub

Applied Building Physics

Ambient Conditions, Building Performance and Material Properties

  1. English
  2. ePUB (mobile friendly)
  3. Available on iOS & Android
eBook - ePub

Applied Building Physics

Ambient Conditions, Building Performance and Material Properties

About this book

Bad experiences with construction quality, the energy crises of 1973 and 1979,complaints about 'sick buildings', thermal, acoustical, visual and olfactory discomfort, the need for good air quality, the move towards more sustainability - all these have accelerated the development of a field that, for a long time, was hardly more than an academic exercise: building physics. The discipline embraces domains such as heat and mass transfer, building acoustics, lighting, indoor environmental quality and energy efficiency. In some countries, fire safety is also included. Through the application of physical knowledge and its combination with information coming from other disciplines, the field helps to understand the physical phenomena governing building parts, building envelope, whole building and built environment performance, although for the last the wording 'urban physics' is used. Building physics has a real impact on performance-based building design. This volume on 'Applied Building Physics' discusses the heat, air and moisture performance metrics that affect building design, construction and retrofitting.

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Yes, you can access Applied Building Physics by Hugo S. L. Hens in PDF and/or ePUB format, as well as other popular books in Technology & Engineering & Architecture General. We have over one million books available in our catalogue for you to explore.

1
Outdoor and Indoor Ambient Conditions

1.1 Overview

In building physics, the outdoor and indoor ambient conditions play a role comparable to the loads in structural engineering, which is why the term ‘ambient loads’ is often used. Their knowledge is essential to make correct design decisions. The components that shape them are:
Outdoors Indoors
Air temperature (also called dry bulb temperature) θe Air temperature (also called dry bulb temperature) θi
Radiant temperature θR
Relative humidity Ï•e Relative humidity Ï•i
(Partial water) vapour pressure pe (Partial water) vapour pressure pi
Solar radiation ES
Under-cooling qrL
Wind vw Air speed v
Rain and snow gr
Air pressure Pa,e Air pressure Pa,i
In the paragraphs that follow, these components are discussed separately. Bear in mind though that the greater the decoupling between the outdoor and indoor temperatures, and sometimes the relative humidit...

Table of contents

  1. Cover
  2. Series Page
  3. Title Page
  4. Copyright
  5. Dedication
  6. Preface
  7. Chapter 0: Introduction
  8. Chapter 1: Outdoor and Indoor Ambient Conditions
  9. Chapter 2: Performance Metrics and Arrays
  10. Chapter 3: Whole Building Level
  11. Chapter 4: Envelope and Fabric: Heat, Air and Moisture Metrics
  12. Chapter 5: Timber-framed Outer Wall as an Exemplary Case
  13. Chapter 6: Heat-Air-Moisture Material Properties
  14. Appendix A: Solar Radiation for Uccle, Belgium, 50° 51′ North, 4° 21′ East
  15. End User License Agreement