Forced circulation boiler

Because of this, the generation tubes of a forced circulation boiler are able to be oriented in whatever way is required by space constraints.

A series of small tubes that are part of one giant coil, usually made of steel, have feed water pumped through at great speed.

Essentially, the arrangement can be best described as having a large thin walled coil of pipe wrapping around the circumference of a vertical steel drum looping around and down until it reaches the bottom.

If steam goes through the generation tubes inside, the tubes may overheat and become weak, and if water is allowed down into the steam system, corrosion, water hammer, or other ill effects may occur.

However, the downside to this system is the complete dependence on a constant supply of feed water.

Without the constant supply, the system may be subject to a massive and expensive damage [5]