Eddy Current Testing (ECT) is one of many electromagnetic testing methods used in nondestructive testing, making use of electromagnetic induction to detect and characterize surface and sub-surface flaws within heat exchanger tubes.
Eddy currents were first observed by François Arago in 1824, but French physicist Léon Foucault is credited with discovering them in 1855.
Proper water treatment, cleaning and testing is essential for chiller operations. What you see here is a method we use, called Eddy Current Testing. ECT is performed on a regular basis in the life of a centrifugal chiller to ensure that the tubers are operating at maximum efficiency. All heat transfer occurs in the condenser and evaporator tubes, which makes efficiency in the tubes critical. Without proper water treatment, cleaning and testing, you would be left with tubes that get eroded, which then causes the tubes to burst. I would venture to say that this is indeed inefficient, especially as far as energy saving goes.
If you are looking for energy efficiency in your building, give us a call!