Fire boiler tubes are tubes that hold extremely hot post-combustion gasses and allow transfer heat energy to pass into a different closed system, usually water. In layman’s terms, they allow very hot gas to heat water, without contaminating the water. These tubes can come with a wide heat rating range, as well as in a wide range of efficiencies.
The goal of this project is to model and produce boiler tubes with different and unintuitive tube geometries, and then compare heat transfer effectivity and head loss with current tube models.
After several iterations of modeling and testing, the data consistantly showed that the core of the air column would stay warmer then the rest of the air. It was determined that this warm column would cause a drop in the net effectiveness of the transfer tube.
To assist in pushing warm air to the transfer surface, a core insert was added to the model. The benefit of a core insert, is that it would be able to decrease downstream temperature in a more uniform manner, while adding the smallest amount of headloss possible.
The first prototype should be produced in the next few weeks, which will allow us to start running live simulations and will give us concrete feedback on the results.