DECOG – A dual fuel engine micro-cogeneration model: Development and calibration

Quintana, Sebastián H.; Mesa, E.; Bedoya, Iván D.

doi:10.1016/j.applthermaleng.2019.02.008

Cited by 7 publications

(4 citation statements)

References 17 publications

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“…A model for an internal combustion engines-based cogeneration system has been developed initially within International Energy Agency (IEA) Annex 42 for usages applied to building simulation programs, but then modified and adapted by DECOG for a dual fuel diesel-engine-based micro-cogeneration system [28]. The model aims to accurately predict the electric and thermal power outputs of any internal-combustion-engines-based cogeneration system.…”

Section: Models Theoretical Descriptionmentioning

confidence: 99%

Development of a Dual Fuel ICE-Based Micro-CHP System and Experimental Evaluation of Its Performance at Light Loads Using Natural Gas as Primary Fuel

Castaño Mesa,

Quintana,

Bedoya

2023

Energies

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This study presents the implementation of a micro-generation system and its operation procedure, based on a dual fuel diesel engine using natural gas as the primary fuel and conventional diesel as the pilot fuel. On the other hand, the evaluation and validation results by experimental testing of a model according to International Energy Agency—IEA—Annex 42, applied to dual fuel diesel micro-cogeneration system, are also presented. The control procedure for experimental operation depends of both inputs’ electric power generation demand and desired substitution level due a given natural gas availability. The heat recovery system of the micro-generation system uses a gas–liquid compact heat exchanger that was selected and implemented, where wasted heat from exhaust gases was transferred to liquid water as a cool fluid. Effective operation engine performance was determined by measurement of masses’ flow rate such as inlet air, diesel and natural gas, and also operation parameters such as electric power generation and recovered thermal power were measured. Electric power was generated by using an electric generator and then dissipated as heat by using an electric resistors bank with a dissipation capacity of 18kW. Natural gas fuel was supplied and measured by using a sonic nozzle flowmeter; in addition, natural gas composition was close to 84.7% CH4, 0.74% CO2 and 1.58% N2, with the rest of them as higher hydrocarbons. The highest overall efficiency (electric efficiency plus heat recovery efficiency) was 52.3% at 14.4 kW of electric power generation and 0% of substitution level. Several substitution levels were tested at each engine electric power generation, obtaining the maximum substitution level of 61% at 17.7 kW of electric power generation. Finally, model prediction results were closed to experimental results, both stationary and transient. The maximum error presented was close to 20% associated to thermal efficiency. However, errors for all other variables were lower than 10% for most of micro-cogeneration system operation points.

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Section: Models Theoretical Descriptionmentioning

confidence: 99%

Development of a Dual Fuel ICE-Based Micro-CHP System and Experimental Evaluation of Its Performance at Light Loads Using Natural Gas as Primary Fuel

Castaño Mesa,

Quintana,

Bedoya

2023

Energies

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“…CHP is also known as cogeneration, which means the simultaneous generation of electricity and heat from a single fuel source. The term Micro-CHP is often associated with systems whose electrical power does not exceed 50 kW [1]. Micro-CHP in farm, where biogas is produced from anaerobic digestion of effluents, has been of increasing interest to livestock farmers in recent years.…”

Section: Introductionmentioning

confidence: 99%

“…It is found that the optimal configurations of the models ANN1, ANN2 and ANN3 respectively have the RMSE values of 0.58 %, 0.34 % and 0.62 % and the regression coefficients (R 2 ) values of 0.9993, 0.9858 and 0.9959. The propinquity of the R 2 values to(1) …”

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confidence: 99%

Micro-combined heat and power using dual fuel engine and biogas from discontinuous anaerobic digestion

Akkouche

Loubar

Nepveu

et al. 2020

Energy Conversion and Management

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“…has forced nations to concentrate on new energy sources. [4][5][6] The transport sector plays a crucial role in the energyconsuming industry due to its involvement in day-to-day life. [7][8][9] Compression ignition (CI) engines dominate the transport sector due to their higher vulnerability than spark ignition engines.…”

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confidence: 99%

Energy, Exergy, and Emission Analysis of Biofuels in Compression Ignition Engine with Camphor Oil as Premixing Fuel

Gurusamy,

Ponnusamy,

Varuvel

2023

Energy Tech

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This article aims to study the impact of camphor oil premixing with intake air on compression ignition (CI) engine characteristics powered with jatropha oil and cottonseed oil. The experiment is conducted on the direct injection compression engine attached to the premixing setup. The investigation reveals that premixing of camphor oil with cottonseed oil and jatropha oil escalates the thermal brake efficiency to 35.02% and 33.62% and brings down the brake‐specific energy consumption to 10.27 and 10.70 kJ kWh−1. At all loading conditions, the premixing of camphor oil and the rise of camphor oil in premixing proportions increase the volumetric efficiency and cut the exhaust gas temperature. 20% premixing of camphor oil with cottonseed oil and jatropha oil drops the smoke opacity emissions by 22.23% and 11.86% and NO emission by 23.27% and 14.59%, respectively, at full load conditions. Further, it shows a 27.60% and 21.14% hike in CO emissions and a 31.34% and 31.87% hike in HC emissions at full load conditions. The in‐cylinder pressure, heat release rate, and mean gas temperature increase with increasing the energy share of camphor oil in premixing. Overall, the premixing of camphor oil shows better CI engine attributes except HC and CO emissions.

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DECOG – A dual fuel engine micro-cogeneration model: Development and calibration

Cited by 7 publications

References 17 publications

Development of a Dual Fuel ICE-Based Micro-CHP System and Experimental Evaluation of Its Performance at Light Loads Using Natural Gas as Primary Fuel

Development of a Dual Fuel ICE-Based Micro-CHP System and Experimental Evaluation of Its Performance at Light Loads Using Natural Gas as Primary Fuel

Micro-combined heat and power using dual fuel engine and biogas from discontinuous anaerobic digestion

Energy, Exergy, and Emission Analysis of Biofuels in Compression Ignition Engine with Camphor Oil as Premixing Fuel

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