CHP
CHP plant "Berliner Straße" Stadtwerke Lutherstadt Wittenberg
In 2018, S&L modernized the cogeneration plant "Berliner Straße" for the public utility company Lutherstadt Wittenberg by replacing 4 Jenbacher J616 chp units after 22 years of operation with 4 new Waukesha P9394GSI cogeneration units (1.4 MWe each) and renewing the entire cogeneration plant periphery.
A special feature of the new CHP system is that rich burn (Lambda-1) engines were used.
The advantage of this technology is, on the one hand, the low exhaust emission values: emissions have been reduced by over 90% compared to the old system. The NOX emissions undercut the new limit values according to 44th BImSchV by more than 50%. This is achieved by exhaust gas purification using 3-way catalytic converters. In this way, especially the particularly climate-damaging methane emissions can be noticeably reduced.
On the other hand, this CHP plant achieves a particularly high overall efficiency of over 95% (according to acceptance measurement, without tolerances).
ERGO insurances, Düsseldorf
For one of the biggest computing centers in Germany, S&L delivered and installed 7 VHP gensets based on Waukesha L7042G (645 kWe and 968 kWth each). Besides the delivery of hot water for a 110°C absorption chiller system for the air conditioning of the computer racks and offices, uninterruptable power supply is provided for the whole facility. The stoichiometric engines utilize 3-way converter technique to reach the low emission limits.
Westf. Provinzialversicherung
4 x Waukesha VHP L5108G, elev. JW temp., 460 kWe and 850 kWth, each.
At the headquarters of 'Westfälische Provinzialversicherung' in Münster, 4 Waukesha VHP engines supply the electricity, heat and - by way of absorption chillers - the cooling power for the air-conditioning system.
The plant is also an essential element for the supply of electric energy for the office building, as it ensures uninterrupted power for the data processing centre.
Hamburg Airport
6 x VHP L7042G with 700 kWe and 1,200 kWth, each.
The chp plant at the Hamburg airport is a typical example for the manifold and complex operational uses of chp plants running on natural gas. As of 1992, this unique installation has been complementing the energy supply for Hamburg's international airport.
The heat of the engines is recovered both for heating and - via absorber units - for refrigeration. On top of this, the exhaust gas provides energy for the production of approx. 3.7 tons of steam per hour.
