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In my note Understanding the pressure profile in open-loop water system, the sketch illustrated a general…
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Two important factors to control in hot and humid climates
When we design buildings in hot and humid climates, like Thailand, we need to control…
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Heat balance at roof – case study
This note illustrates a case study applying the heat balance method to determine the roof…
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Equivalent Diameter and Aspect Ratio of duct
Equivalent Diameter (De): The diameter of a circular duct with the same friction loss as…
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HVAC duct sizing by Equal Friction Method – Rectangular duct sizing
This note show how to determine the rectangular duct size by using Equivalent Diameter (De).…