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ponents integrated into the heating assembly as standard to improve long-term availability, and Bosch ELSB systems can also be incor- porated into existing boiler systems to meet multiple demands, such as space heating and domestic hot water. The steam chamber on the ELSB produces high-quality steam with low residual moisture. Thanks to its variable output, the thyristor- based control circuit achieves high efficiency across the entire load range. Furthermore, the output can be automatically adjusted to the requirements or to available surpluses of self-generated electricity. In addition, Bosch offers solutions for water treatment, condensate management, and energy savings through economiser technology, for example, enabling a complete system to meet onsite demands from a single OEM supplier. Bosch’s industrial service also provides pre- and after-sales advice and maintenance for all ELSB systems. The Bosch UNIVERSAL steam boiler range Bosch UNIVERSAL CSB ultra-compact steam boilers are available with output ratings of 300 to 4 800 kg/h at between 0.5 and 1.0 bar (low pressure); or 300 to 23 600 kg/h at up to 16 bar (high pressure). These boilers are de- signed to deliver future-proof, low-emission performance for multi-fuel firing using oil, gas, biogas, bio-oil, 20% hydrogen and other special fuels. They offer high efficiency and are an ideal solution for the food and beverage, manufacturing, hospital, laundry and hotel industries. The boiler components are configured to achieve low emissions, high steam quality, and optimal energy efficiency, supported by an integrated economiser and modular heat- recovery systems. User-friendly operation is achieved through: Individually configurable boiler control (BCO), Automatic start-up control SUC, ready to connect to automation systems, a digital efficiency assistant called MEC Optimize, and MEC Remote, a protected remote access solution. This three-pass, shell-and-fire-tube steam boiler is suitable for a wide range of applica- tions. It can be combined with all other avail- able system components from Bosch Steam Boilers’ modular range, such as fuel and water supply, water disposal, water analysis, and heat recovery. A three-pass technology, a compact footprint, and a modular design based on the systematic use of features and parts also used in other boiler types ensure a particularly attractive price-performance ratio. Reduced installation is required because the unit is supplied as a single unit, with the firing and economiser already factory-fitted, and plug-in connections to simplify wiring to the controller.
By replacing a 30-year-old boiler with a new Bosch UL-S steam boiler, a brewery in the Czech Republic improved operational reliability and reduced fuel costs by approximately 16%.
The UL-S steam boiler is designed to meet requirements for capacities up to 28 000 kg/h, pressures up to 30 bar, and temperatures up to 230 °C, while the UL-SX can accommodate steam temperatures up to 300 °C. The three-pass patent, dating back to 1952, underpins the ongoing success of this series. The lateral fire tube (1st pass) and the adjacent fire-tube bundles (2nd and 3rd pass) are ideally integrated into the pressure ves- sel, together with the fully wetback reversing chamber. This design results in a large heating surface with the smallest possible overall dimensions. The ZFR and ZFR-X UNIVERSAL steam boilers, with a double-fire-tube design, deliver high performance and a wide range of control. They are an ideal solution for energy provid- ers, power plants, municipal facilities and manufacturing industries. Also available for producing saturated (ZFR) and superheated steam (ZFR-X), these systems can deliver up to 55 000 kg/h of steam. The double fire-tube boiler, which has separate flue-gas paths, is also suitable for sin - gle-burner operation, enabling a significantly extended modulation range while maintaining the same high efficiency. The ZFR/ZFR-X range is manufactured on a project-specific basis, with multiple optional components, such as superheated steam generation, avail- able to meet plant requirements. Across its product range, Bosch Steam Boilers offers extensive service and support for steam boiler systems throughout their life- cycle, including 24/7 service availability and a network of technicians for quick response. Remote analysis capabilities via Bosch’s MEC Remote solution are also available for efficient troubleshooting, and reliable OEM spare parts are readily available to ensure high system availability. www.bosch-industrial.com/africa
Bosch U-MB UNIVERSAL steam boilers consist of several modules designed to fulfil individual requirements. These are suited to applications in the food and beverage, laundry and cleaning industries. The U-MB is a fire-tube boiler comprising several modules: a heat-generating section with a three-pass design, a steam chamber above the heat-generating section, and an integrated economiser. This overcomes the requirement for flow components in the fire tubes. Based on the well-proven UNIMAT boiler design, the U-MB offers a generously sized flame tube geometry that delivers ef - ficient combustion. The integrated economiser directly affects energy efficiency. The heat in the flue gases is used to preheat the boiler feedwater, thereby reducing fuel consumption and emissions. The U-MB is offered as a complete, cus- tomised boiler system that includes the basic equipment: the boiler pressure vessel, control and safety components, burner unit, inte- grated economiser, pump module, terminal box and control cabinet; the intelligent boiler control BCO; along with sensors, actuators, and country-specific safety devices. A range of compatible products is also available, including a flue-gas heat exchanger for condensing use, a feedwater cooling mod- ule, a condensate service module, a water service module, a water treatment module, and more. A combination of these can be added to the UNIVERSAL U-MB product to tailor a solution that best suits on-site needs. The Bosch UL-S and UL-SX UNIVERSAL steam boilers are designed to produce saturated (UL-S) and superheated (UL-SX) steam, respectively. These highly efficient and reliable solutions for the food and bever- age industries, manufacturing and municipal facilities set new standards in process heat supply.
March-April 2026 • MechChem Africa ¦ 31
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