The purpose of this course is to introduce you to the True Modular Boiler (TMB) design. The scope is confined to hydronic boilers for space, domestic hot water, water source heat pump, and heating systems. These boilers provide a temperature of 100°F for water source heat pumps, 140°F for potable domestic hot water, and 180°F for space heating.
These systems are generally used for apartments, housing projects, condominiums, office building, commercial buildings, churches, schools and hospitals.
Most hydronic systems in use today are of the conventional large two boiler design, or less frequently, the conventional modular boiler design. More than 80% of commercial boiler sales are for replacement projects in existing buildings. Most contractors replace the equipment with what's already there. The purpose of this course is to educate you about an alternative system that is far superior and more energy-efficient than these conventional systems. Armed with this knowledge, you will have the confidence to recommend replacing the conventional systems with a flexible and more economical one.
That system is the True Modular Boiler (TMB) system design. It is similar to the conventional modular design, but with critical design differences that make it far superior. The TMB utilizes a simple design that uses multiple small modular boilers that are activated sequentially, with all other boilers isolated until needed. The efficiency of its design is most apparent during warmer months, when less than maximum load is needed. Comparisons of the TMB with conventional boiler systems will demonstrate that they are simple to design, require low maintenance, provide energy savings, and are cost effective. Their design will provide energy savings of 35-50% over conventional hot water heating systems. The American Gas Association (AGA) gives a 80% combustion efficiency rating to boilers that can provide 75% thermal efficiency under steady-state firing with an average water temperature of 140°F. However, studies show that conventional boilers waste 40% of annual fuel consumption during the boiler's cycling and idling hours. This results in a service efficiency of 30 — 40%, rather than the expected 70 — 80%.
This course covers the basics of how a TMB system works and the specific differences between it and other systems in use today. The benefits of using a TMB system, as well as the cost savings are discussed.