Biomass-fired combined cooling, heating and power for small scale applications – A review

Wegener, Moritz; Malmquist, Anders; Isalgué, A.; Martin, Andrew

doi:10.1016/j.rser.2018.07.044

Cited by 68 publications

(40 citation statements)

References 151 publications

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“…The electricity produced (P el ) in the system can be determined by Equation (5). The work of the turbine (P tur ) and compressor (P com ) are known results of the simulation, while mechanical (η mec ) and electrical generator efficiencies (η eg ) are given by a previous study on the ET10 EFMT [6].…”

Section: Energetic and Exergetic Performance Indicators For The Cchp mentioning

confidence: 99%

Performance Analysis of a Small-Scale Biogas-Based Trigeneration Plant: An Absorption Refrigeration System Integrated to an Externally Fired Microturbine

et al. 2019

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Trigeneration or combined cooling, heat and power (CCHP) systems fueled by raw biogas can be an interesting alternative for supplying electricity and thermal services in remote rural areas where biogas can be produced without requiring sophisticated equipment. In this sense, this study considers a performance analysis of a novel small-scale CCHP system where a biogas-fired, 5 kWel externally fired microturbine (EFMT), an absorption refrigeration system (ARS) and heat exchangers are integrated for supplying electricity, refrigeration and hot water demanded by Bolivian small dairy farms. The CCHP solution presents two cases, current and nominal states, in which experimental and design data of the EFMT performance were considered, respectively. The primary energy/exergy rate was used as a performance indicator. The proposed cases show better energy performances than those of reference fossil fuel-based energy solutions (where energy services are produced separately) allowing savings in primary energy utilization of up to 31%. Furthermore, improvements in electric efficiency of the EFMT and coefficient of performance (COP) of the ARS, identified as key variables of the system, allow primary energy savings of up to 37%. However, to achieve these values in real conditions, more research and development of the technologies involved is required, especially for the EFMT.

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Section: Energetic and Exergetic Performance Indicators For The Cchp mentioning

confidence: 99%

Performance Analysis of a Small-Scale Biogas-Based Trigeneration Plant: An Absorption Refrigeration System Integrated to an Externally Fired Microturbine

et al. 2019

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“…In such a background, different renewable-based technologies have been proposed for heating and cooling applications in buildings. Among them, the most attractive is represented by solar thermal [8,9] and biomasses [10,11]. Both technologies present the pros and cons.…”

Section: Introductionmentioning

confidence: 99%

Unified Methodology to Identify the Potential Application of Seasonal Sorption Storage Technology

2020

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In this study, the definition of a new methodology for a preliminary evaluation of the working boundary conditions under which a seasonal thermal energy storage (STES) system operates is described. The approach starts by considering the building features as well as the reference heating system in terms of solar thermal collectors’ technology, ambient heat sinks/source, and space heating distribution systems employed. Furthermore, it is based on a deep climatic analysis of the place where the STES needs to be installed, to identify both winter and summer operating conditions. In particular, the STES energy density is evaluated considering different space heating demands covered by the STES (ranging from 10% up to 60%). The obtained results demonstrate that this approach allows for the careful estimation of the achievable STES density, which is varies significantly both with the space heating coverage guaranteed by the STES as well as with the ambient heat source/sink that is employed in the system. This confirms the need for careful preliminary analysis to avoid the overestimation of the STES material volume. The proposed approach was then applied for different climatic conditions (e.g., Germany and Sweden) and the volume of one of the most attractive composite sorbent materials reported in the literature, i.e., multi-wall carbon nanotubes (MWCNT)-LiCl, using water as the working fluid, needed for covering the variable space heating demand in a Nearly Zero Energy Building (NZEB) was calculated. In the case of Swedish buildings, it ranges from about 3.5 m3 when 10% of the space heating demand is provided by the STES, up to 11.1 m3 when 30% of the space heating demand is provided by the STES.

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“…These previous works show the increasing interest and research conducted in small-scale, renewable energy CCHP systems for islands. However, despite the many advantages of renewable CCHP systems, the application of such systems is spreading only slowly [17]. This may be due to insufficient knowledge about the availability of such technologies, too many uncertainties for investors, and/or too much complexity for system operation and maintenance [3,7].…”

Section: Introductionmentioning

confidence: 99%

3E-Analysis of a Bio-Solar CCHP System for the Andaman Islands, India—A Case Study

Wegener

Isalgué²,

Malmquist

2019

Energies

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Energy services are especially expensive on remote islands due to longer and more unstable fuel supply chains. In this paper, different renewable energy systems utilizing locally available biomass and solar energy are proposed as alternatives for a hotel resort on Neil Island, India. Based on local demand data, commercial information, and scientific literature, four cases are modelled with the simulation software HOMER and their economic, energetic, as well as ecological (3E) performances are compared. The robustness of each case configuration is tested with a sensitivity analysis. The results show that a biomass-based, solar-assisted combined cooling, heating, and power (CCHP) system offers an economic saving potential of more than 500,000 USD over twenty years and could decrease CO2 emissions by 365 t per year. When not applying CCHP measures, system performance is significantly worsened. A solar and battery-assisted diesel generator system shows similar economic outcomes as the CCHP system but worse ecological performance. Implementing the biomass-based CCHP system could improve the ecological footprint of the island, substantially decrease expenditure for the hotel owner, and generate a new source of income for surrounding farmers through biomass selling.

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Biomass-fired combined cooling, heating and power for small scale applications – A review

Cited by 68 publications

References 151 publications

Performance Analysis of a Small-Scale Biogas-Based Trigeneration Plant: An Absorption Refrigeration System Integrated to an Externally Fired Microturbine

Performance Analysis of a Small-Scale Biogas-Based Trigeneration Plant: An Absorption Refrigeration System Integrated to an Externally Fired Microturbine

Unified Methodology to Identify the Potential Application of Seasonal Sorption Storage Technology

3E-Analysis of a Bio-Solar CCHP System for the Andaman Islands, India—A Case Study

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