Full Description

This chapter focuses on the opportunities and control strategies associated with using computerized control for centralized cooling and heating systems. The chapter is divided into three major sections: (1) background information on the effects of and opportunities for adjusting control variables, terminology, and descriptions of the systems and control variables considered in this chapter; (2) basic optimization methods used throughout in the application sections of the chapter (intended for researchers and developers of advanced control strategies); and (3) applications of both static and dynamic optimization methods (e.g., cooling plants with and without storage) as well as supervisory control strategies that can be implemented in computerized control systems, intended for practitioners.

Chapter Table of Contents

Terminology

Control Variables

OPTIMIZATION METHODS

Static Optimization

Dynamic Optimization

Applications of Static Optimization

Applications of Dynamic Optimization

SUPERVISORY CONTROL STRATEGIES AND TOOLS

Cooling Tower Fan Control

Chilled-Water Reset with Fixed-Speed Pumping

Chilled-Water Reset with Variable-Speed Pumping

Sequencing and Loading Multiple Chillers

Strategies for Boilers

Strategies for Air-Handling Units

Strategies for Building Zone Temperature Set Points

Control of Discrete Cool Thermal Storage

Forecasting Diurnal Demand Profiles

Predictive Control Strategies

Citation: 2011 ASHRAE Handbook -- HVAC Applications: Chapter 42, Supervisory Control Strategies and Optimization