Dairy chooses Bosch boiler technology Modern energy concept thanks to four-pass boiler

  • New energy concept with CHP unit and four-pass boiler
  • Effective use of waste heat with innovative boiler technology from Bosch
  • Previous Loos boiler plant had been in use for more than 40 years
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  • January 25, 2013
  • Thermotechnology
  • Press releases
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press release

Following an extensive site analysis, the dairy operated by Immergut GmbH & Co. KG in Schlüchtern, Hesse, decided to opt for a new energy concept. The new system comprises a waste heat boiler with self-firing from Bosch Industriekessel and a combined heat and power unit (CHP unit). The CHP unit uses the combined heat and power cycle to generate approximately 30 per cent of the power required by Immergut. The self-fired waste heat boiler converts the waste heat that accumulates from the engine into process steam via its additional fourth smoke tube pass. The steam is primarily used for sterilisation in the dairy's production process. A separate flue gas heat exchanger connected downstream from the fourth smoke tube pass further increases efficiency. An additional peak-load boiler was not necessary due to the use of the design variant with self-firing. This enabled investment costs, space requirement and expenditure on equipment to be reduced accordingly.

In addition to the UL-S type waste heat boiler with self-firing, the system also includes modular components from Bosch Industriekessel for water treatment, heat recovery and control. These provide more energy efficiency, a higher efficiency rating and increase operational reliability. The plant construction company Helmut Herbert GmbH & Co. from Bensheim placed the order for the waste heat boiler with Bosch Industriekessel and was responsible for all aspects of the planning and construction of the new energy system.

The new energy concept, which significantly increases efficiency compared with separate electrical power and heat generation, will pay for itself within less than six years. At the same time, by reducing its CO2 and NOx emissions, the dairy is contributing to the protection of the environment. Previously, Immergut had been using a steam boiler manufactured by Loos International (now Bosch Industriekessel GmbH) in the year 1970.

Contact person for press inquiries:
Markus Tuffner
Tel. +49 9831 56 248

Bosch Industriekessel GmbH, part of the Bosch Thermotechnik GmbH, has stood for innovation in industrial boiler technology for more than 145 years. Boiler systems for steam, hot water and heating, manufactured to customers' specification, provide efficient heating and process heat for all applications. Boiler house components, which are modular in design and perfectly coordinated, together with intelligent regulation and control technology, significantly simplify the planning, installation and commissioning of the complete system. Comprehensive service support from one source rounds off the innovative product portfolio.

Further information ist available online at

The Bosch Group is a leading global supplier of technology and services, active in the fields of automotive technology, energy and building technology, industrial technology, and consumer goods. According to preliminary figures, more than 306,000 associates generated sales of 52.3 billion euros in 2012. The Bosch Group comprises Robert Bosch GmbH and its more than 350 subsidiaries and regional companies in some 60 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. Bosch spent some 4.5 billion euros for research and development in 2012, and applied for over 4,700 patents worldwide. The Bosch Group's products and services are designed to fascinate, and to improve the quality of life by providing solutions which are both innovative and beneficial. In this way, the company offers technology worldwide that is “Invented for life.”

Further information is available online at,

PI8001 - January 25, 2013

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