A Comprehensive Review and Qualitative Analysis of Micro-Combined Heat and Power Modeling Approaches

Cheekatamarla, Praveen; Abu-Heiba, Ahmad

doi:10.3390/en13143581

Cited by 6 publications

(4 citation statements)

References 46 publications

(68 reference statements)

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“…In this context, energy modeling of the cogeneration system helps optimize the system capacity and fit while improving the evaluation and simulation of cogeneration system implementation in a building. A comprehensive overview of various modeling approaches adopted by international researchers was recently reported [35]. This study presented the advanced thermodynamic models and their benefits.…”

Section: Relevant Workmentioning

confidence: 99%

Decarbonization of Residential Building Energy Supply: Impact of Cogeneration System Performance on Energy, Environment, and Economics

Cheekatamarla

2021

Energies

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Electrical and thermal loads of residential buildings present a unique opportunity for onsite power generation, and concomitant thermal energy generation, storage, and utilization, to decrease primary energy consumption and carbon dioxide intensity. This approach also improves resiliency and ability to address peak load burden effectively. Demand response programs and grid-interactive buildings are also essential to meet the energy needs of the 21st century while addressing climate impact. Given the significance of the scale of building energy consumption, this study investigates how cogeneration systems influence the primary energy consumption and carbon footprint in residential buildings. The impact of onsite power generation capacity, its electrical and thermal efficiency, and its cost, on total primary energy consumption, equivalent carbon dioxide emissions, operating expenditure, and, most importantly, thermal and electrical energy balance, is presented. The conditions at which a cogeneration approach loses its advantage as an energy efficient residential resource are identified as a function of electrical grid’s carbon footprint and primary energy efficiency. Compared to a heat pump heating system with a coefficient of performance (COP) of three, a 0.5 kW cogeneration system with 40% electrical efficiency is shown to lose its environmental benefit if the electrical grid’s carbon dioxide intensity falls below 0.4 kg CO2 per kWh electricity.

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Section: Relevant Workmentioning

confidence: 99%

Decarbonization of Residential Building Energy Supply: Impact of Cogeneration System Performance on Energy, Environment, and Economics

Cheekatamarla

2021

Energies

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“…In this framework, internal combustion engines (ICEs) represent a reliable, well-established, and economically viable technology [6][7][8]. ICEs are the most common power source for transport and are significantly diffused for electric generation and CHP applications up to 1.0 MW [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Energy and Economic Investigation of a Biodiesel-Fired Engine for Micro-Scale Cogeneration

et al. 2021

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The work aims at investigating the techno-economic performance of a biodiesel micro combined heat and power (CHP) system for residential applications. The CHP unit is based on a direct-injection compression ignition engine providing 6.7 kWel and 11.3 kWth. A 0D model is developed and validated to characterise the behaviour of the biodiesel-fired engine at full and partial load in terms of efficiency, fuel consumption, and emissions. Furthermore, non-dimensional polynomial correlations are proposed to foresee the performance of biodiesel-fuelled engines for micro-CHP applications at partial loads. Afterwards, the CHP system is adopted to satisfy the electric and thermal demand of domestic users in Southern Italy. To this purpose, a parametric analysis is performed considering a different number of apartments and operating strategies (electric-driven and thermal-driven). A bi-variable optimisation based on the primary energy saving (PES) index and payback period (PBT) permits selecting the thermal-driven strategy and five apartments as the most suitable solution. The optimal PBT and PES are equal to 5.3 years and 22.4%, respectively. The corresponding annual thermal self-consumption reaches 81.3% of the domestic request, and the thermal surplus is lower than 8%. Finally, a sensitivity analysis is adopted to define the influence of the costs of energy vectors and a cogeneration unit on the economic feasibility of the biodiesel CHP system. The analysis highlights that the investigated apparatus represents an attractive option to satisfy the energy requests in micro-scale applications, providing valuable energy and economic advantages compared to traditional energy production.

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“…Finally, they focused on the solar energy-based technologies and presented shortly the main micro-CHP systems that coupled renewable energy sources. In 2020, Cheekatamarla et al [9] presented a review article on the modelling of the micro-CHP system with a focus on combustion engine as a prime mover. They found out that the Annex 42 [10] model was the most used modelling approach.…”

Section: Introductionmentioning

confidence: 99%

A Review – Renewable energy based micro-cogeneration and hybrid energy systems

Kallio

Siroux

2021

E3S Web Conf.

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To reduce carbon and greenhouse gas emissions, the more efficient and environmentally friendly energy production in the building sector is required. The deployment of renewable energy based microcogeneration units in the decentralized hybrid energy systems is a part of the solution. The micro combined heat and power (micro-CHP), or co-generation, units produce simultaneously heat and electricity from a single fuel source at high efficiency and close to the consumption point. These units offer significant benefits: reduced primary energy consumption, reduced CO2 emissions, and avoidance of distribution losses due to central plant and network construction. The objective of this paper is to present a review of available renewable energy based micro-CHP systems and to focus on the biomass and solar based conversion devices. Finally, a novel hybrid renewable energy system is presented by coupling renewable energy sources, such as solar and biomass for micro-CHP.

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A Comprehensive Review and Qualitative Analysis of Micro-Combined Heat and Power Modeling Approaches

Cited by 6 publications

References 46 publications

Decarbonization of Residential Building Energy Supply: Impact of Cogeneration System Performance on Energy, Environment, and Economics

Decarbonization of Residential Building Energy Supply: Impact of Cogeneration System Performance on Energy, Environment, and Economics

Energy and Economic Investigation of a Biodiesel-Fired Engine for Micro-Scale Cogeneration

A Review – Renewable energy based micro-cogeneration and hybrid energy systems

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