Universitätsklinikum Marburg: reliable energy self-sufficiency
According to the Federal Statistical Office, Germany’s medical centres spent a total of more than EUR 2 billion on energy, fuels and water in 2010. This represents a huge savings potential; costs can be cut significantly by investing in a modern energy architecture.
The given situation
Until 2010, the hospital was supplied with steam and hot water from the district heating plant of the University of Marburg. Essentially for economic and ecological reasons, the medical centre then decided to become self-sufficient in energy. In September 2010, Bosch Industriekessel provided the required technology. Two steam boilers and heating boilers each were commissioned already at the end of October of the same year.
Two Universal steam boilers UL-S with a steam output of 3,000 kilograms per hour now supply steam to the kitchen, laundry, cleaning and disinfection devices/systems, e.g. for the processing of beds or sterilisation. Fuelled with natural gas, the boiler ensures low-emission, environmentally friendly combustion.
An integrated economiser increases the boiler efficiency through fuel gas heat recovery. The WSM-V water service module supplies degassed and chemically conditioned feed water to the steam boilers and disposes of the desalting and waste water. The WA water analyser fully automatically measures and monitors the boiler water quality.
Two Unimat boilers UT-L with a heat output of 7.7 megawatts each heat the domestic and heating water. The boilers use low-emission natural gas – one of them is a dual-fuel boiler that can also run on light fuel oil. They achieve a standard efficiency of up to 95 percent without flue gas heat exchanger. The four boilers are controlled via the SCO system control and BCO boiler control units. All operating data can be stored and displayed in the form of clear curve or summary charts on the touch panel displays. An integrated monitoring and security function prevents maloperation.
State-of-the-art boiler and modular technology from Bosch Industriekessel enabled the Universitätsklinikum Marburg to become self-sufficient in energy. The investment in a modern energy architecture pays off in about as little as four years.
Universitätsklinikum Marburg and its energy centre