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HVAC Articles and lessons.

There are many lessons that can be learned for those interested in what I call the Core heating plant. It took awhile and many trial and error installations to understand the different ways how to treat the hot air that rises and colder air lays low and to make them work together within the system...There are still many gravity furnace systems being used today.
Simplified Lessons in Furnace Heating
1922 Part 1,The Cause of Air Movement
Simplified Lessons in Furnace Heating
1922 Part 2, The Transmission of Heat
Simplified Lessons in Furnace Heating ( Gravity Heating )
Comfort, Economy, and Permanence Prevented By Consideration of Price rather Then Service.
 
The Object Of Furnace Systems

Comfort, Economy and Permanence prevented by Consideration of Price Rather Then Service
Essentials To Successful Furnace Heating (Gravity Heating )

First Principles of Air Movement, Which When Violated, Are Certain To Cause Failure.
Proportioning Rectangular Air Ducts ( by G.A.Voorhees)
1.Necessity of providing greater area then that of corresponding round pipe. 2. This page also covers ridge finish for standing seam roofs.
Four Styles of Heating Drums (1922)
 
Mac Ennical, Expert Engineer
A story of more fact than fiction, in two parts. We have here both part 1 and part 2.
 
 
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