Collectors can be connected in different ways. This makes it possible to achieve different thermal results to suit the application for which energy is being supplied.
A connection system that reduces the amount of pipework that feeds each area of the collection field. It is limited to a maximum number of elements to prevent loss of performance in the final collectors and pressure due to expansion in their collecting pipes.
The main characteristic of parallel connection is that performance in the collection system is more uniform with all areas working with similar inlet and outlet temperatures. The main drawback is that they produce greater total flow rates.
When a collector or collector array is connected in series to another collector or collector array, a higher outlet temperature is produced, thereby reducing total flow rates. Not all of the collectors however work with the same performance.
3. Series - parallel:
Mixed connection is suitable for large installations, enabling a reduction in total flow rate while partially making performance uniform in different areas of the installation.