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Where power is consumed, heat is often required as well. The processing industries use thermal energy for heating and drying or to produce steam. And in many regions of the world, the warmth in our very own homes is generated in centralized facilities. Producing both power and useful heat at the same time is the most cost-efficient way to cover these requirements: By making use of the hot exhausts normally emitted as waste, Combined Heat and Power (CHP) generation significantly reduces fuel consumption compared to conventional power plants and additional boiler equipment to produce heat. Thanks to this, the same electrical and thermal outputs can be achieved at much lower costs, while emissions to the environment are kept to a minimum. Explore Combined Heat and Power by Siemens to find out more about what cogeneration can do for your business.
Gain insights from Udo Brockmeier, chairman of utility Stadtwerke Düsseldorf in Germany who run our record-breaking power plant "Lausward Fortuna." In this interview, he explains how CHP assures its extraordinary profitability.
At Siemens, we have a proven track record of providing best-in-class products, solutions, and services for CHP. This is demonstrated by hundreds of cogeneration plants worldwide based on our expertise – first and foremost, our flagship plant "Lausward Fortuna" in Düsseldorf that set the world records for net efficiency, heating capacity, and electrical output, or Amata B.Grimm's industry parks with high fuel efficiency in power and heat generation. You see: we've made it work on the largest of scales, and we make it work for all smaller applications as well. From single gas and steam turbines or heat recovery steam generators to full turnkey installations: The same commitment is iterated in all of our projects around the globe, bringing out the best in Combined Heat and Power.
Wherever heat is required for either industrial processing or public supply, Combined Heat and Power plants are a viable and beneficial alternative. Ideally, the thermal output of a cogeneration system is matched to the user's heat demand, and with our long-lasting experience in devising custom solutions for power production, we have all the necessary capabilities to meet your exact requirements. Whether you grow vegetables or heat cities – with our proven product range for CHP, including a wide selection of steam and gas turbines as well as our exhaustive portfolio of services, we can give just the right answers to your energy challenges of tomorrow.
In Combined Heat and Power, the heat produced in a plant facility is utilized in other industrial processes, extracted to cover the heat demand of individual buildings, or exported to a district heating system. CHP plants are typically based on gas and/or steam turbines in simple or combined cycle configuration. In simple cycle, the waste heat generated by a gas turbine is captured in a Heat Recovery Steam Generator (HRSG) or Waste Heat Recovery Boiler (WHRB) and used for heating or to produce process steam. In combined cycle CHP it is initially used by a second turbine to produce additional power.
Most of the numerous benefits of Combined Heat and Power production are due to one decisive advantage: Efficiency. While only a small fraction – 35-60% – of the fuel used in conventional power plants is converted to useful power, fuel efficiency levels of up to 90% can be reached in CHP thanks to the heat utilization. For your business, this naturally means lower costs to produce the same amount of power.
Regardless of whether reducing your carbon footprint is among your primary targets, the financial savings offered by cogeneration come with a pleasant side effect: CHP is one of the few 'negative cost' methods of mitigating environmental impacts – an overall reduction of energy costs by up to 30% while simultaneously achieving a 15-40% decrease in carbon emissions speaks for itself. Profitability can be further increased for industrial applications by exporting excess power to the local grid.
Time is money – this holds true for any business, and producing power and heat independently from the grid in a dedicated CHP plant will add immensely to your security of supply. Furthermore, Siemens turbines and control systems offer maximum productivity due to their short start-up times, incredible reliability, and minimal inspection times in the case of steam turbines. Supplementary firing, redundancy and/or back-up boilers can be installed to further minimize unscheduled downtimes and provide additional operational flexibility. And for applications where flexibility in terms of changing or unconventional fuels is a requirement, our steam turbines represent the perfect solution as they are capable of coping with heat derived from a wide array of different combustibles, such as waste or biomass.
Siemens gas turbines combine high exhaust gas temperatures with outstanding electrical efficiencies, offer broad fuel flexibility and low life-cycle costs. With their high availability, they represent a reliable power and heat source in manufacturing processes. Quick load following as well as good part-load efficiency ensure you get the operational flexibility you need. For industrial processes with fluctuating heat demand, heat peaking capability can be achieved with supplementary firing.
Our steam turbines can be configured to provide process steam at appropriate pressure levels for all kinds of industrial applications as well as district heating. As different applications require different qualities and quantities of steam, adaptability is a prerequisite for providing the best solutions for your needs. Every Siemens steam turbine can thus be equipped with uncontrolled or controlled steam extraction to meet specific demands.
The numerous advantages of Combined Heat and Power production make it an ideal solution for an even greater number of possible applications. See how businesses across the globe benefit from Siemens products and solutions for CHP, from waste treatment in Scotland to textile manufacturing in Mexico.
Dedicated CHP plant generating process steam for the manufacture of synthetic textile fibers
SGT-750 gas turbine exceeding the guaranteed output of 31.7 MW for the conditions on site (28°C)
Improved position in a highly competitive, international market thanks to CHP's capabilities
Zero Harm concept; no Lost Time Incident during entire construction period of over 3 years
Plant’s flexibility boosted by taking only 25 minutes from startup to reach maximum output
Electrical efficiency of 61.5% saves approximately 2.5 M tons of CO2 annually
Award-winning 100% biomass solution covering half of the paper mill's electricity needs
SST-300 steam turbine generating 15.25 MWe and 10 MWth
Reduction of carbon emissions by 75,000 tonnes per year – equivalent to 35,000 households
Sustainable and affordable waste treatment solution with electricity as a useful by-product
SST-300 steam turbine generating 15.25 MWe and 10 MWth
Burns 150,000 tonnes of municipal waste a year, operating 24 hours per day
One of South Korea's most efficient and eco-friendly power plants with >60% electrical efficiency
Installed capacity of 834 MW, generated by two SGT6-8000H and one SST6-5000 turbine
Constructed within a record-breaking 24 months from groundbreaking
Cogeneration industry parks with 12x SGT-800 and 9x SST-400 turbines
Robust dry low emissions (DLE) combustion system reduces nitrogen oxide emissions to a minimum
Electricity and heat supplied to industrial users within a 200 km radius of Bangkok
Trigeneration plant with 2x SGT-400 & 1x SST-300 turbines producing 40 MWe & 19 MWth
Providing electricity, heating, and cooling to 60,000 local residents
Added revenue from exporting unused electricity to the New York power grid
For more information on Combined Heat and Power, please get in touch with our experts.