Fundamentals of Temperature Control

Fundamentals of Temperature Control focuses on theoretical foundations and principles involved in temperature control.

The book first offers information on thermal-process representation and response. Discussions focus on response to damped harmonic inputs, principle of superposition, bode diagrams, ramp, step, and impulse functions, harmonic response, electrical analogs, basic equations, and thermal conductivity. The text then examines common thermal elements and open-loop temperature control.

The publication ponders on closed-loop temperature control and the dynamics of discontinuous temperature control. Topics include dynamics in the phase plane and time domain, dynamic analysis, closed-loop control, secondary feedback, and cooling processes. The manuscript then examines quasi-continuous and continuous temperature control, as well as quasi-continuously controlled process behavior in the time domain and quasi-continuously controlled process behavior in the phase plane.

The text is a vital source of data for researchers interested in the fundamentals of temperature control.

Contenu

Preface
Nomenclature

1. Thermal-Process Representation
   Mathematical Models
   Simple Processes
   Electrical Analogs
   Basic Equations
   Thermal Conductivity
   Exponential Lag
   Analogous Electrical and Thermal Networks
2. Thermal-Process Response
   2.1. Ramp Functions
   2.2. Step Functions
   2.3. Impulse Functions
   2.4. Harmonic Response
   2.5. Bode Diagrams
   2.6. Nyquist Diagrams
   2.7. Principle of Superposition
   2.8. Response to Damped Harmonic Inputs
   2.9. The s Plane and the Laplace Transform
3. Common Thermal Elements
   3.1. Transit Delays
   3.2. Cascade Lags
   3.3. Thermometer Examples
   3.4. Distributed Parameters
   3.5. Liquid Heating (or Cooling) Processes
   3.6. Common Thermal Processes
4. Open-Loop Temperature Control
   Text
5. Closed-Loop Temperature Control
   5.1. Closed-Loop Control
   5.2. Secondary Feedback
   5.3. Cooling Processes
   5.4. Overriding Commands
6. Dynamics of Discontinuous Temperature Control
   6.1. Dynamics in the Phase Plane
   6.2. Dynamics in the Time Domain
   6.3. Dynamic Analysis
   6.4. Heating-Cooling Processes
7. Quasi-Continuous and Continuous Temperature Control
   Quasi-Continuous Control
   Quasi-Continuous Systems
   Continuous Control
   Quasi-Continuously Controlled Process Behavior in the Time Domain
   Quasi-Continuously Controlled Process Behavior in the Phase Plane
   The Error (yP) Caused by the Calibration Interval (pn)
   Nonlinearities in the Control-Element Profile
   Predicting System Performance
   Appendices
   A. Transducers for Temperature-Control Systems
   B. Selected Bibliographies on Control Elements
   C. Bimetallic Design
   D. Historical Development of Discontinuous Temperature-Control Literature
   Bibliography
   Author Index
   Subject Index