cogeneration system Articles
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An exergy-based method for allocating carbon dioxide emissions from cogeneration systems
Many companies, government agencies and researchers have sought means to allocate emissions for cogeneration systems. Some work has been carried out in this area, but the results obtained thus far are not universally accepted, and often are inconsistent, overly complex and difficult to use, and not based on sound reasoning. In this paper, an exergy-based method for allocating emissions for ...
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Sensitivity analysis of component efficiencies on performance of a gas turbine cogeneration system
The performance of a 1000 kW gas-turbine cogeneration system was evaluated in terms of performance measures, such as net power, exergy efficiency of the system, and the unit costs of electricity and steam. The efficiencies of some components that have a significant affect on the performance were taken as physical variables. Sensitivity was evaluated by introducing parameters, defined as the ratio ...
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Effect of exergy optimisation on a cogeneration system's CO2 emissions according to different demand patterns
The objective of this work is to verify how different operational strategies affect the CO2 emissions of a cogeneration system according to different demand patterns. The operation strategies studied were focused in running cost and exergetic efficiency. The results show that the optimal exergetic efficiency strategy generated the highest emissions reduction. The operation with the highest ...
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Thermodynamic and thermoeconomic comparison of combined cycle cogeneration systems
In this paper, several configurations of combined cycle cogeneration systems are investigated by energy, exergy and thermoeconomic analyses. In each of these configurations, varying steam demand is considered rather than fixed steam demand. Among the different approaches for thermoeconomic analysis in the literature, the specific exergy costing method is applied. Since the systems have more than ...
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Europe’s Largest Mine Gas Plant
GE Jenbacher has supplied 14 cogeneration systems to Europe’s largest coal mine gas plant, Fenne, which is owned by SaarEnergie and located in the district of Fenne near Saarbrücken, Germany, GE Energy announced at Hannover Messe 2004. The JMS 620 GS cogeneration systems produce more than 40 megawatts of electricity and nearly 41 megawatts of thermal energy. This coal mine gas plant ...
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An appraisal method of exergy cost minimisation for co-generation systems
This study introduces an exergy cost-minimisation appraisal method for a simple gas turbine co-generation system. Optimisation of a gas turbine co-generation system of the electric output class of 17 MW is examined for a variety of turbine inlet temperatures of 950–1,300°C. An optimum value of the turbine inlet temperature exists for exergy cost minimisation and is estimated to be 1,200°C since ...
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Combined Heat and Power Pharmaceutical - Biogen Idee - Case Study
OWNER Biogen Idee LOCATION Cambridge, Massachusetts, USA PRODUCT Taurus'" 60 (5.7 MWe) Gas Turbine CUSTOMER VALUE Sustainable Energy Production Biogen Idee is a global leader in the discovery, development, manufacturing and commercialization of innovative therapies. In 2003, the pharmaceutical company needed to do something to ensure the critical supply of steam and electricity to its Kendall ...
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Thermodynamic evaluation of gas turbines for cogeneration applications
In this paper, the first and second laws of thermodynamics have been utilised to evaluate the performance of intercooled reheat regenerative gas turbine cogeneration plant. The effects of overall pressure ratio, cycle temperature ratio, pressure losses, and process steam pressure on energetic and exergetic efficiencies have been investigated. The results indicate that most of the exergy ...
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Exergy analysis of a cogeneration system through Artificial Neural Network (ANN) method
The main objective of this study is to apply the Artificial Neural Network (ANN) method to a cogeneration system, located in Izmir, Turkey, for exergetic evaluation purposes. The data used are based on the actual operational conditions and the results obtained from this system, which was exergetically analysed by the authors. It consists of three turbines with a total capacity of 13 MW, six spray ...
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The Beltran biomass cogeneration system
An effective, economical solution for harvesting safe, renewable domestic energy, mitigating wastes and achieving environmental goals. Background The Beltran Biomass Cogeneration System (BBCS) is an integrated, three-stage process that uses proprietary gasification technology to convert biomass and other organic wastes into versatile, cleanburning synthesis gas. The purified gas can then be ...
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The effect of elevated inlet air temperature and relative humidity on Gas Turbine cogeneration system: exergy assessment
This research aims to quantify the exergy destructions of Gas Turbine (GT) cogeneration system under different inlet air temperatures and humidity. Three different cogeneration schemes were examined in this research: conventional GT, GT-Single Pressure HRSG and GT-Dual Pressure HRSG. A parametric study was carried out in terms of exergy destruction and second-law efficiency. The exergy ...
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In view of sustainable future energetic–exergetic and economic analysis of a natural gas cogeneration plant
Thermodynamics plays an important role in performing energy and exergy analyses of industrial processes. The first law is widely used in engineering practice, and is the basis of the heat–balance method of analysis that is commonly used in energy systems performance analysis. However, the second law involves the reversibility or irreversibility of processes, and is a very important aspect ...
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7.5 MWe Direct Drying and Cogeneration - Tissue Industry - Case Study
OWNER Lucart Group LOCATION Province of Lucca, Italy DIRECT DRYING DESIGN AND SUPPLY Valmet PRODUCT Taurus 70 Gas Turbine CUSTOMER VALUE Efficient and Sustainable Power The Lucart Castelnuovo di Garfagnana tissue mill is part of the Lucart Group, one of the first European paper and tissue producers. The mill has inaugurated its cogeneration system which is comprised of a Taurus™ 70 gas ...
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Energy and exergy analysis of a novel multigeneration system producing cooling, heating, power and pure water
A novel multi–generation system producing power, pure water, cooling and heating is proposed and analysed in detail. The system comprises a hybrid generator-absorber heat exchanger (GAX), the Organic Rankine Cycle (ORC), the absorption heat transformer (AHT) and a desalination system. For comparison purposes, three working fluids, including R123, Isopentane and n–butane are considered in the ORC. ...
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24 MWe - Natural Gas Fuel Combined Heat and Power Plant - University of Illinois Hospital - Case Study
OWNER University of Illinois Hospital PROJECT ENGINEERING EME, LLC ENGINEERING, PROCUREMENT AND CONSTRUCTION Solar Turbines Incorporated PRODUCT Three (3) Taurus 70 Natural Gas Turbine Generator Gets With Heat Recovery Boilers CUSTOMER VALUE Power Reliability, Energy Savings, Reduced Emissions, Island Mode Operation A major hospital that treats critically ill patients cannot afford power ...
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Thermodynamic assessment of an integrated system for cogeneration and district heating and cooling
A thermodynamic assessment is reported of a proposed system, for which advanced engineering designs have been developed for integrating cogeneration with district heating and cooling. The system was developed by Edmonton Power for the city of Edmonton, Alberta, Canada. Energy and exergy analyses are used to attain a more complete thermodynamic understanding. The results provide a better ...
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Bucknell University - 6 MW CHP Application - Case Study
Quick Facts Location: Lewisburg, PA Campus Size: 450 acre campus with > 150 buildings, totaling 2.4 MM sq. ft. Student population over 3,300 Campus Loads: 42,000 MWh per yr 7.5 MW peak demand 70,000 lbs per hr steam Prime Movers: Solar Taurus 60 combustion turbine 70k lb/hr HRSG with redundancy Murray KG4 steam turbine Annual Energy Savings: $1.25 MM between 2003 and 2006 Installed System ...
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Thoeni, Allens Farm Biogas Installation - Case Study
Allens Farm anaerobic digestion (AD) facility is located within the beautiful countryside of Colchester, which is said to be the oldest recorded town in Great Britain. The farm is run by three partners – David Hunter, Charlie Lochore and Will Lochore, who felt an anaerobic digestion (AD) plant would make an excellent addition to their farming business. Austrian company Thoeni were ...
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Saint-Vincent Hospital, Ottawa, Ontario, Canada
Boiler/Cogen Heat/Energy Recovery Application Thermal Energy installed designed and implemented an integrated FLU-ACE heat recovery system with cogeneration unit for efficient electrical power generation and an overall reduction in energy consumption. The installation consists of a natural gas fueled engine with a 425 kW generator, waste heat boiler, and FLU-ACE system processing combined flue ...
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Harnessing biogas for energy savings
For Santa Cruz Wastewater Treatment Facility (WWTF), dependability matters. Since 1989, this state-of-the-art WWTF, nestled in a shallow canyon in the coastal city of Santa Cruz, Calif., has been leading the way for renewable energy programs and environmental protection in the West. Santa Cruz WWTF generates its own electric power by using internal combustion engines that burn a mixture of ...
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