ASHRAE F19-2009 (SI)

Energy requirements and fuel consumption of HVAC systems directly affect a buildings operating cost and indirectly affect the environment. This chapter discusses methods for estimating energy use for two purposes: modeling for building and HVAC system design and associated design optimization (forward modeling), and modeling energy use of existing buildings for establishing baselines and calculating retrofit savings (data-driven modeling).

Chapter Table of Contents

GENERAL CONSIDERATIONS
Models and Approaches
Characteristics of Models
Choosing an Analysis Method
COMPONENT MODELING AND LOADS
Calculating Space Sensible Loads
Ground Heat Transfer
Secondary System Components
Primary System Components
SYSTEM MODELING
Overall Modeling Strategies
Degree-Day and Bin Methods
Correlation Methods
Simulating Secondary and Primary Systems
Modeling of System Controls
Integration of System Models
DATA-DRIVEN MODELING
Categories of Data-Driven Methods
Types of Data-Driven Models
Examples Using Data-Driven Methods
Model Selection
MODEL VALIDATION AND TESTING
Methodological Basis
Summary of Previous Testing and Validation Work

ISBN: 978-1-933742-55-7
ISSN: 1523-7282

Units: SI

Citation: 2009 ASHRAE Handbook -- Fundamentals: Chapter 19, Energy Estimating and Modeling Methods



Product Code(s): D-F192009SI