1st Edition

Energy Modeling and Computations in the Building Envelope

ISBN 9781498723206
Published August 27, 2015 by CRC Press
318 Pages 101 B/W Illustrations

USD $155.00

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Book Description

Energy Modeling and Computations in the Building Envelope instills a deeper understanding of the energy interactions between buildings and the environment, based on the analysis of transfer processes operating in the building envelope components at the microscopic level. The author:

  • Proposes a generalized physics model that describes these interactions at the microscopic level via the macroscopic characteristics of the building envelope
  • Presents mathematical models that utilize classical analytical tools and can be used to perform quantitative predictions of the consequences of the energy interactions
  • Reveals easy-to-apply engineering methods concerning the design and inspection of the building envelope, taking into account the effects of energy on the envelope

Energy Modeling and Computations in the Building Envelope provides comprehensive coverage of this environmentally and economically important topic, from the physics of energy transfer to its numerical estimation. The book is especially useful to those looking to increase building energy efficiency, decrease the consumption of primary energy carriers, and raise the ecological sustainability of construction products.

Table of Contents

Introduction: The Buildings’ Envelope—a Component of the Building Energy System
Systematic Approach Applied to Buildings
Envelope System (Envelope) and Energy Functions Design
Summary Analysis of the Building–Surrounding Energy Interactions

Physics of Energy Conversions in the Building Envelope at Microscopic Level
Idealized Physical Model of the Building Envelope as an Energy-Exchanging Medium (Review of the Literature from Microscopic Point of View)
Conclusions and Generalizations Based on the Survey of Literature Published in the Field
Design of a Hypothetical Physical Model of Phonons Generation in Solids: Scatter of Solar Radiation within the Solid
Micro–Macroscopic Assessment of the State of the Building Envelope

Design of a Model of Energy Exchange Running between the Building Envelope and the Surroundings: Free Energy Potential
Energy-Exchange Models of the Building Envelope
Work Done in the Building Envelope and Energy-Exchange Models
Specification of the Structure of the Free Energy in the Components of the Building Envelope (Electrothermodynamic Potential of the System)
Distribution of the Free Energy within the Building Envelope

Definition of the Macroscopic Characteristics of Transfer
General Law of Transfer
Physical Picture of the Transmission Phenomena

Numerical Study of Transport in Building Envelope Components
Method of the Differential Relations
Method of the Integral Forms
Weighted Residuals Methodology Employed to Assess the ETS Free Energy Function

Initial and Boundary Conditions of a Solid Wall Element
Effects of the Environmental Air on the Building Envelope
Various Initial and Boundary Conditions of Solid Structural Elements
Design of Boundary Conditions of Solid Structural Elements

Engineering Methods of Estimating the Effect of the Surroundings on the Building Envelope: Control of the Heat Transfer through the Building Envelope (Arrangement of the Thermal Resistances within a Structure Consisting of Solid Wall Elements)
Calculation of the Thermal Resistance of Solid Structural Elements by means of Indexes of Energy efficiency
Solar Shading Devices (Shield) Calculation
Modeling of Heat Exchange between a Solar Shading Device, a Window, and the Surroundings
Design of Minimal-Size of Windows by means of the Coefficient of Daylight
Method of Reducing the Tribute of the Construction and the Thermal Bridges to the Energy Inefficiency
Assessment of Leaks in the Building Envelope and the Air-Conditioning Systems by Delta_Q method
Mathematical Model of the Environmental Sustainability of Buildings and its employment in BG_LEED method

Application (Solved Tasks in 1D, 2D and 3D FE and Tables)
Matrix of Conductivity [K(1)]
Matrix of Surface Properties [F(1)]
Generalized Matrix of the Element Conductivity [G(1)] = [K(1)] + [F(1)]
Vector of a Load due to Recuperation Sources {fc(1)}
Vector of a Load due to Convection to the Surrounding Matter {fc(1)}
Vector of a Load due to a Direct Flux {fDre}

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Alexander V. Dimitrov is a professional lecturer with 35 years of experience in four different universities. In addition to universities in Bulgaria, Professor Dimitrov has lectured and studied at leading scientific laboratories and institutes, including the Luikov Heat and Mass Transfer Institute of the Belarusian Academy of Sciences in Minsk; the Lawrence Berkeley National Laboratory, Environmental Energy Technology Division; the University of Nevada– Las Vegas College of Engineering; and Stanford University in California. He has authored more than 100 scientific articles and eight books (including three in English), and earned two scientific degrees: Ph.D and D.Sc.

Featured Author Profiles

Author - Alexander V.  Dimitrov


"… does an excellent job at enlightening the practicing engineer in a difficult, but exciting area dealing with building efficiency, energy, and design."
—Darrell W. Pepper, University of Nevada, Las Vegas, USA

"… describes detailed theoretical and numerical analysis of the microscale energy and heat transfer processes in the solid materials for buildings, particularly envelopes."
—Cheng-Xian (Charlie) Lin, Florida International University, Miami, USA

"This book is a valuable contribution to the worlds of science and of practice, a service to building and environmental protection and, herewith, to the next generations."
International Journal of Energy Optimization and Engineering, April-June 2015