oil fired hot water boiler, the technicians of ZOZEN boiler deeply explain the principle
The primary purpose of the boiler is to supply energy to the facility's operations – for comfort heating, manufacturing process, laundry, kitchen, etc. The nature of the facility's operation will dictate whether a steam or hot water boiler should be used. Hot water is commonly used in heating applications. Under these conditions, there is a wide range of ZOZEN hot water boiler products available.

oil fired hot water boiler, ZOZEN WNS series gas-fired (oil-fired) boilers are wetback fire-tube boilers with a two-pass or three-pass design. It uses threaded smoke tube for heat transfer and manages to achieve a thermal efficiency up to 98%. The economizer is installed at the tail of boiler, giving the boiler a compact size. Meanwhile, sound automatic control system enables unattended operation.
PT.Sari Incofood Corporation is a leading manufacturer of instant coffee drink in Indonesia. The company was eager to upgrade renew backward equipment. Among them, the steam boiler provides heating support for the production process of coffee pulping, liquid coffee concentrating and coffee freeze drying. To meet the requirements of the actual production line, ZOZEN recommended the SZL series water tube boiler for the company. The boiler has been stably running up to now, so the company spoke highly of ZOZEN products and technology.
ZOZEN SZS series boiler body is designed with D-type chamber combustion structure. The furnace is on right side and the convection heating surface is on left side. The membrane type structure is adopted for the circumference of the furnace body, the wall between the furnace and the convection zone, the front and rear walls of boilers body. The furnace pressure is designed to be greater than 6000Pa.
ZOZEN is the first in China to adopt arched tube sheet and threaded smoke tube structure. Threaded smoke pipe is a high-efficiency heat transfer element researched by ZOZEN for many years. After continuous optimization, its heat transfer coefficient is 1.8 times higher than that of ordinary smoke pipe, which increases heat conduction.
ZOZEN Boiler provides temporary and permanent solutions with our profession for industrial boilers to meet the most stringent emissions requirements. If you need more information, please contact us today.
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21 Jul 2026From the Andes to São Paulo: How ZOZEN Boiler Is Expanding Its South American Industrial Footprint
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14 Jul 2026World Cup Spotlight on the Americas: How a Chinese Boiler Reached an Overseas Production Line
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07 Jul 2026A Long-Run Story of an Old Boiler: ZOZEN WNS Series Gas-Fired Boiler Operating for 16 Years
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South America is rich in agricultural and energy resources and has a diverse manufacturing base. Industries such as papermaking, packaging and sugar processing are upgrading their production equipment as market and environmental requirements evolve. For these companies, a boiler is more than a steam source. Its performance affects production continuity, fuel consumption, process quality and emissions management. Through projects in Venezuela, Brazil and Ecuador, ZOZEN Boiler has continued to ex...21 Jul 2026 -
As the 2026 FIFA World Cup brings the United States, Mexico and Canada into the international spotlight, attention is once again turning to the cities, industries and communities across North America. Away from the stadiums, manufacturing plants, beverage production lines and automotive component facilities continue their daily operations, providing steady support for local economies. ZOZEN Boiler’s WNS Series Serving Industrial Projects in North America In these less visible parts of ...14 Jul 2026 -
At the production site of a pharmaceutical company in Shanghai, a ZOZEN gas-fired steam boiler commissioned in 2010 has been operating steadily for 16 years. For this established pharmaceutical company, founded in 1995, the steam system is closely related to production rhythm, process coordination, and on-site operation support. Whether the equipment can maintain stable operation over the long term directly affects the continuity of daily production. Time is a practical test, and the continuous ...07 Jul 2026
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