What is true about integral superheaters?

Integral superheaters are designed as an integrated component of the boiler system rather than requiring separate installation as a standalone unit. This means they are built into the boiler setting itself, allowing them to utilize the heat generated by the combustion process more efficiently. This integration improves the overall thermal efficiency of the boiler by ensuring that the superheated steam is produced without needing additional space or equipment.

The other points about a separate installation or operating independently do not apply because integral superheaters rely directly on the boiler's generated heat for their functioning, making them integral to the boiler system as a whole. The efficiency aspect is also misunderstood; while integral superheaters might not always be the most efficient in every context, their design typically aims to enhance the boiler's performance rather than diminish it.