Greenhouse gas reduction potential by producing electricity from biogas engine waste heat using organic Rankine cycle

Uusitalo, Antti; Uusitalo, Ville; Grönman, Aki; Luoranen, Mika; Jaatinen-Värri, Ahti

doi:10.1016/j.jclepro.2016.03.125

Cited by 52 publications

(27 citation statements)

References 23 publications

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“…Under the pressure of fossil fuel consumption and environmental pollutions caused by conventional vehicles, lots of measures are taken to increase the energy efficiency and decrease the emissions, from the viewpoints of fuel types, combustions, energy recycle, thermal management, and after-treatments (Kovacs et al, 2019;Kuszewski, 2019;Sharma et al, 2019;Uusitalo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Intake characteristics and pumping loss in the intake stroke of a novel small scale opposed rotary piston engine

Gao

Tian

Jenner

et al. 2020

Journal of Cleaner Production

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Section: Introductionmentioning

confidence: 99%

Intake characteristics and pumping loss in the intake stroke of a novel small scale opposed rotary piston engine

Gao

Tian

Jenner

et al. 2020

Journal of Cleaner Production

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“…Future research could also cover other types of scenarios. For instance, examinations of Stirling engines for microgeneration [48], or organic Rankine cycle (ORC) [49] or thermoelectric generator [50], might be relevant for utilizing low-grade waste heat.…”

Section: Discussionmentioning

confidence: 99%

Carbon Handprint: Potential Climate Benefits of a Novel Liquid-Cooled Base Station with Waste Heat Reuse

et al. 2019

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The novel life cycle assessment (LCA)-based carbon handprint indicator represents a potential carbon footprint reduction that producers/products create for customers who use the(ir) product instead of a baseline product. The research question is how to consider a situation in which multiple customers use a product for different purposes to provide a carbon handprint quantification and the associated communication. The study further provides new insight into the greenhouse gas (GHG) emissions reduction potential within the mobile telecommunications and energy sectors. The carbon handprint of a novel Finnish liquid-cooled base station technology is quantified. The liquid-cooled base station provides a telecommunications service and waste heat that is recoverable through the cooling liquid for heating purposes. The baseline solutions are an air-cooled base station, and district and electrical heating. The liquid-cooled base station creates a carbon handprint, both through energy savings in telecommunications and additional waste heat reuse, replacing other energy production methods. A large-scale climate change mitigation potential through a liquid-cooled base station expansion could be significant. Different supply chain operators’ contributions to the total carbon handprint could be terminologically distinguished in communications to emphasize their roles in a shared handprint. The handprint should be transparently communicated for each customer and function.

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“…The electricity production efficiency from biogas in a typical CHP unit was determined to be 40 % (Uusitalo et al, 2016) 5. The tariff of electrical power produced from a CHP unit combusting biogas in EU is between 0.11 and 0.28 € kWh -1 (European Biogas Association, 2015).…”

Section: The Potential Economic and Environmental Impact Of Bioaugmenmentioning

confidence: 99%

Effects of added enzymes on sorted, unsorted and sorted-out barley: A model study on realtime viscosity and process potentials using rapid visco analyser

Shetty

Zhuang

Olsen

et al. 2017

Journal of Cereal Science

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Many ammonia-rich biomass sources, such as manures and protein-rich substrates, are potential inhibitors of the anaerobic digestion (AD) process. It was previously demonstrated that bioaugmentation of Methanoculleus bourgensis MS2T in an ammonia inhibited process in a continuous stirred tank reactor (CSTR), resulted in up to 90 % recovery of the methane production compared to the uninhibited production. However, cultivation of pure strains has practical difficulties due to the need of special growth media and sterile conditions. In contrast, acclimatized enriched cultures have minor sterility requirements. In the current study, an enriched ammonia-tolerant methanogenic culture was bioaugmented in a CSTR reactor operating under ammonia-induced, inhibited-steady-state. The results demonstrated that bioaugmentation, completely counteracted the ammonia toxicity effect. This indicates that a commercial application of bioaugmentation could improve up to 36 % the methane production, the greenhouse gas reduction efficiency and the gross revenue of ammonia inhibited full scale biogas reactors. 16S rRNA gene sequencing showed that bioaugmentation changed the microbial composition of the reactors resulting in higher bacterial and lower archaeal community diversity. The bioaugmented reactor showed a fourfold increase of the abundance of the bioaugmented methanogens compared to the control reactor. This indicates that ammonia-tolerant methanogens established well in the ammonia-inhibited reactor and dominated over the domestic methanogenic population. Finally, this study showed that the enriched culture alleviated ammonia toxicity 25 % more efficiently than the previously used pure culture.

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Greenhouse gas reduction potential by producing electricity from biogas engine waste heat using organic Rankine cycle

Cited by 52 publications

References 23 publications

Intake characteristics and pumping loss in the intake stroke of a novel small scale opposed rotary piston engine

Intake characteristics and pumping loss in the intake stroke of a novel small scale opposed rotary piston engine

Carbon Handprint: Potential Climate Benefits of a Novel Liquid-Cooled Base Station with Waste Heat Reuse

Effects of added enzymes on sorted, unsorted and sorted-out barley: A model study on realtime viscosity and process potentials using rapid visco analyser

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