There is absolutely no known technique for finding a crack 100 percent of the time. However, using a combustion analyzer to test for cracks in a heat exchanger offers some distinct advantages.
Techs interested in becoming certified in carbon monoxide (CO) testing not only need an understanding of combustion, but also low-level CO poisoning and what CO alarms do and don’t do.
Here are methods for performing differential
pressure measurement between two rooms or areas; airflow measurement for spray
booths, laboratory hoods, and unit ventilators; and other measurements.
If you work in the HVAC industry, you are concerned with the process of conditioning air and moving air from one area to another. It makes sense that you need to know how air flows in ducts and what factors affect the flow.
The act of melting snow is a fairly simple thing. Whether your heater of choice is hot water tubing or electrical elements, there are some basic details that are common to all successful snow melting systems.
Coppergate House is an apartment building, located in central New Jersey, where energy costs have nearly doubled over the last few years. American DG Energy has provided a cogeneration solution that is supplying an efficient source of heat, domestic hot water, and electricity.
With energy costs going through the roof, HVAC system designers and specifiers are taking a much harder look at the many choices available in ductwork. One question that is being asked more and more is whether to choose rectangular or spiral duct.
Motor efficiency remains one of the top issues in our industry, but when you talk about efficiency, often you're talking about trade-offs. The Motor Doctor explains all the factors involved.
A technician often has to sketch or design ductwork and other parts of an HVAC system. This means working with lines, angles, and other shapes. This article shows you how to draw and work with these different figures.
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