This course will introduce you to systems, equipment and design guidelines for high temperature water (HTW) heating plants. HTW systems are used for heating multi-building facilities such as campuses and industrial and commercial activities. The advantage HTW systems have over steam heating systems is that the pressurized water in HTW systems has a much greater thermal storage capacity, resulting in smaller pipe and pump sizes. In this course you will learn about the different types of HTW systems, distribution schematics, hot water generators, pressurization methods, expansion vessels, pumps and controls. Course Outline 1. General Requirements 2. Definitions 3. Types of Systems 4. System Water Velocities 5. Types of Distribution Circuits 6. Hot Water Generators 7. Pressurization 8. Expansion Vessels 9. Pumps 10. Controls

Learning Objectives

At the successful conclusion of this course, you’ll be able to identify and discuss:

• Learn the temperature and pressure parameters for high, medium and low temperature HTW systems.
• Learn about the single pump forced circulation HTW system with steam pressurization and expansion vessel.
• Learn about the double pump forced circulation HTW system with steam pressurization and expansion vessel.
• Learn about the single pump forced circulation HTW system with inert gas pressurization and expansion vessel.
• Learn about the double pump forced circulation HTW system with inert gas pressurization and expansion vessel.
• Learn the recommended water velocities for HTW systems.
• Learn about the direct-supply, single-circuit distribution system.
• Learn about the direct-supply, radial distribution system.
• Learn about the direct-supply, reverse return distribution system.
• Learn about the one-pipe loop-main distribution system.
• Learn about the features and functions of hot water generators.
• Learn about the saturated steam pressurization method.
• Learn about the inert gas pressurization method.
• Learn about the six pressurization methods that are generally not recommended.
• Learn the advantages and disadvantages of steam pressurization and inert gas pressurization.
• Learn how to size expansion vessels.
• Learn design criteria for steam pressurized systems.
• Learn design criteria for inert gas pressurized systems.
• Learn about the types of pumps used in HTW systems.
• Learn about system controls.