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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Recently, a special equipment inspection team visited Wuxi Zozen Boilers Co., Ltd. for an inspection and guidance session. Mr. Zhang Guoping, General Manager of ZOZEN Boiler, together with representatives from relevant departments, participated in the inspection and discussions. The meeting focused on special equipment production quality management, the implementation of safety responsibilities, manufacturing process control, and documentation management. Special Equipment Inspection Team Con...25 Aug 2026 -
At a local paper manufacturing company in Egypt, a ZOZEN WNS Series 6 t/h gas-fired steam boiler has been supplied as part of an export project. The Egyptian paper mill uses natural gas as the boiler fuel to meet the process steam requirements of paper production. The project also includes technical documents and a product solution prepared in accordance with ASME and CE certification requirements. Paper manufacturing is a continuous industrial process. Steam is involved in several stages, incl...01 Sep 2026 -
Over the past two years, ZOZEN Boiler has supplied gas-fired steam boilers and related services to industrial customers in Venezuela. The applications include beverage production and papermaking. This article presents two projects: a 3 t/h WNS gas-fired steam boiler supplied to a Venezuelan beverage manufacturer and a 15 t/h WNS gas-fired steam boiler supplied to a local paper mill. Steam Supply for Beverage ProductionSteam is used in beverage production for blending, sterilization, equipment ...18 Aug 2026
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