How to choose between vertical and horizontal steam generators

Gas steam generator refers to a steam generator heated by gas combustion that uses natural gas, liquefied gas, and other gas fuels as fuel. The heat released in the combustion furnace heats the water in the steam generator and evaporates it into steam. There are two types: vertical and horizontal.

The vertical steam generator adopts a lower burner and double-return structure, which ensures sufficient fuel combustion and stable operation of the generator. The smoke pipe is inserted into a spoiler to reduce the smoke exhaust speed, increase heat exchange, improve the thermal efficiency of the generator, and reduce user costs.

The horizontal steam generator is a shell type fully wetted back downstream three-circuit pyrotechnic tube structure, which is economical to use. The corrugated furnace lining and threaded flue tube structure improve the heat absorption strength of the generator and meet the needs of thermal expansion of the heat exchange surface.

So, is it better to choose a vertical or horizontal gas steam generator? Let’s do a comprehensive comparison:

1. The vertical generator has fire pipes and water pipes, and the horizontal generator also has fire pipes and water pipes! The vertical generator occupies a small area;

2. The vertical generator has a small water volume and the pressure is only used for 5 minutes. The water volume of the horizontal generator is much larger, and the operating pressure is estimated to be about 15 minutes;
(1) Although vertical generators have no other advantages except quick startup and have particularly high requirements for water quality, they have many problems such as high water treatment costs, high maintenance costs, short service life, and inability to scale, and are not in line with the smart ecology of enterprises. development concept.
(2) The initial startup time of the horizontal generator is relatively long, but the furnace water capacity is large and the heat preservation effect is good. The furnace water is in a high temperature state for a long time, and the restart time is greatly shortened. More importantly, changes in external steam load will not cause large fluctuations in steam pressure, and the steam quality is stable.

3. The vertical fire tube has poor thermal efficiency, while the water tube generator has high efficiency, but requires high water quality. Vertical generators cost much less than horizontal generators and have almost the same lifespan!

Generally speaking, both types of equipment have advantages and disadvantages, which mainly depend on the evaporation capacity of the steam generator you use.