steam boiler working principle, ZOZEN steam boiler types and parameters
As we all know, the steam boiler is a kind of essential equipment in the production process of many enterprises. It is mainly used in the processes such as drying, disinfection, sterilization, distillation and so on. It is widely used in various industries such as food, paper, construction, cables, electronics, tobacco, textile and so on. So, what is the steam boiler working principle? Hereby, ZOZEN Boiler will specifically introduce the steam boiler working principle and relevant ZOZEN steam boiler types and parameters for you.
1. steam boiler working principle
The heat released by the fuel combustion in the furnace heats the water in the pot to vaporize it into the steam. The water in the pot (drum) is continuously heated by the energy released by the combustion of gas fuel in the furnace, then the water temperature rises and pressurized steam generates. Because the boiling point of water rises with the increase of pressure and the pot is sealed, the expansion of steam inside is restricted, which results in the generation of pressure and the formation of thermal power (strictly speaking, the steam in the boiler is formed by the water which is heated with pressure to be saturated water which is further vaporized) as a kind of energy used widely. This is the steam boiler working principle.

ZOZEN WNS series two-pass steam boiler working principle diagram
2. ZOZEN steam boiler types and parameters
Based on the steam boiler working principle and according to different boiler fuels, ZOZEN steam boilers can be divided into: gas/oil-fired steam boilers, coal-fired steam boilers and biomass-fired steam boilers.
1) gas/oil fired steam boilers

ZOZEN gas-fired boilers adopt the large furnace design and have the characteristic of fully automatic operation. They can realize the highly efficient, energy-saving and safe operation. The front and rear smoke boxes have special sealing structure to prevent leakage.
|
Boiler Type |
Capacity |
Pressure |
Thermal Efficiency |
|
WNS series gas/oil-fired steam boiler |
1-20tph |
0.7-2Mpa |
≥98% |
|
SZS series gas/oil-fired steam boiler |
20-110tph |
1.25-5.3Mpa |
≥98% |
More products: https://en.zozen.com/products/gas-fired-boiler
Case: 1.5tph WNS series oil-fired steam boiler for the food industry in Venezuela
2) coal-fired steam boilers

ZOZEN coal-fired boilers adopt featured grate segments to ensure the stable operation of grate. The combustion-supporting air system adopts independent air chambers and a scientific sealing structure. There is also a reasonable air regulating device to improve the combustion efficiency.
|
Boiler Type |
Capacity |
Pressure |
Thermal Efficiency |
|
DZL series coal-fired steam boiler |
2-20tph |
1-2.5Mpa |
≥82% |
|
SZL series coal-fired steam boiler |
4-35tph |
1-2.5Mpa |
≥82% |
|
DHL series coal-fired steam boiler |
20-75tph |
1.25-5.4Mpa |
≥82% |
|
SHX series coal-fired cfb steam boiler |
10-75tph |
1.25-2.45Mpa |
≥89% |
|
DHX series coal-fired cfb steam boiler |
35-75tph |
1.25-5.3Mpa |
≥89% |
More products: https://en.zozen.com/products/coal-fired-boiler
Case: 6tph SZL series packaged chain grate steam boiler project in Bangladesh
3) biomass-fired steam boilers

ZOZEN biomass-fired boilers are designed with the reasonable structure according to different fuel characteristics to ensure the sufficient combustion of fuel. They also solve the problems such as scaling, coking, abrasion, front arch and hopper burn-out and so on.
|
Boiler Type |
Capacity |
Pressure |
Thermal Efficiency |
|
DZL series biomass-fired steam boiler |
2-20tph |
1-2.5Mpa |
≥88% |
|
SZL series biomass-fired steam boiler |
4-35tph |
1-2.5Mpa |
≥88% |
|
DHL series biomass-fired steam boiler |
20-75tph |
1.25-5.4Mpa |
≥88% |
More products: https://en.zozen.com/products/biomass-fired-boiler
Case: 20 tph SZL series biomass fired boiler project for rubber industry in Thailand
https://en.zozen.com/cases/20-tph-szl-series-biomass-fired-boiler-project-for-rubber-industry.html
ZOZEN Boiler is established in 1988. After 30 years of professional R&D and manufacturing, ZOZEN has become a leader in the domestic industrial boiler industry. ZOZEN Boiler has a deep understanding of the steam boiler working principle and conducts innovations based on the traditional steam boiler manufacturing process to ensure that each set of ZOZEN steam boiler has excellent quality and performance. What's more, ZOZEN Boiler can customize the steam system solutions for users to help them achieve the goal of energy saving and consumption reduction.
This is the steam boiler working principle and relevant steam boiler types and parameters shared by ZOZEN Boiler. I believe that you should have a certain understanding of the steam boiler working principle. If you have more questions about the steam boiler working principle and relevant steam boiler types and parameters, please leave your message or consult ZOZEN Boiler directly.
-
On January 6, Wuxi ZOZEN Boiler Co., Ltd. held its 2026 Annual Conference and the 2025 Commendation Ceremony for Advanced Teams and Outstanding Employees under the theme “United to Set Out — Uphold Integrity, Advance with Intelligence.” General Manager Zhang Guoping gathered with all employees to review the company’s journey, honor annual contributions, and chart the path forward. Looking back: Steady progress through perseverance and breakthroughsThe conference opened w...07 Jan 2026 -
In 2025, ZOZEN Boiler is leveraging a series of international exhibitions to continue cultivating overseas markets. From Asia’s Pakistan Textile Expo to Europe’s Russian HVAC and Boiler Exhibition and Industrial Boiler & Heat Exchange Exhibition, and onward to Serbia’s TOPS Scientific Seminar, ZOZEN showcased its high-efficiency, eco-friendly boiler products and customized energy solutions to global customers—demonstrating strong technological capability and market co...30 Dec 2025 -
The industrial heating sector's premier gathering is approaching as manufacturers and technology providers prepare for HEAT&POWER EXPO 2026, the international exhibition dedicated to industrial boiler equipment, heat exchange systems, and power generation technologies. Among the exhibitors converging on Moscow's Crocus Expo Exhibition Center, ZOZEN Boiler stands out as a Top Water Tube Boiler Manufacturer, bringing decades of engineering innovation to an audience seeking advanced thermal sol...24 Dec 2025
Find the Right Boiler For You
-
Email us
-
WhatsApp: +86 18861589035
WeChat: +86 13506150756
Live Chat





