When you look into installing an evacuated tube solar hot water system, you may uncover the term passive tracking. Just what is this phenomenon and why is it so important?

Passive tracking is also known as Incidence Angle Modification (IAM) which means it considers the way the collector behaves as the sun passes across the sky. This is called transversal IAM. Essentially, because these solar hot water systems are made up of tubes, the sun is able to hit them from a larger range of angles, increasing the heat energy that is absorbed. This means your water can be heated faster and more efficiently.

On the other hand, longitudinal IAM considers the sun’s path through the sky throughout the year. However, all collectors have a similar curve, so this should not be a major concern when choosing a solar hot water system.

Opting for an evacuated tube solar hot water system means the collector can work using the morning, midday and afternoon sun so you can get the very most of the day.

This gives evacuated tube solar hot water systems an advantage as they are perfect year round. They do not require the sun to hit them at a direct angle in order to maximise the exposure.

Not only that, but these systems are easy to maintain. Instead of replacing the entire unit, you can easily and simply replace one tube if need be.

Apricus’ evacuated solar hot water systems can not only produce results in all seasons but can also work well in colder climates. They are designed to work at a range of temperature differentials, such as during colder weather and also when trying to target high temperatures.

For more information about these, don’t hesitate to contact the team at Apricus.

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