Performance assessment of a Stirling engine plant for local micro-cogeneration

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Alanne, Kari Paatero, Jukka Beausoleil-Morrison, Ian 2016-09-09T06:58:57Z 2012-01-23
dc.identifier.citation Alanne , K , Paatero , J & Beausoleil-Morrison , I 2012 , ' Performance assessment of a Stirling engine plant for local micro-cogeneration ' INTERNATIONAL JOURNAL OF ENERGY RESEARCH , vol 36 , no. 2 , pp. 218-230 . en
dc.identifier.issn 0363-907X
dc.identifier.issn 1099-114X
dc.identifier.other PURE UUID: d640817f-4789-4f2c-8dc2-5d759c12687b
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
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dc.description VK: T20203; T20202
dc.description.abstract In this paper, we evaluate the viability of a 9.5-kWe wooden pellet-fueled Stirling engine-based micro-cogeneration plant as a substitute for small-scale district heating. The district heating systems against which the micro-cogeneration plant is compared are based either on a pellet-fueled boiler or a ground-source heat pump. The micro-cogeneration and district heating plants are compared in terms of primary energy consumption, CO2 emissions, and feasibility of the investment. The comparison also considers an optimally operated individual 0.7-kWe pellet-fueled Stirling engine micro-cogeneration system with exhaust gas heat recovery. The study is conducted in two different climates and contributes to the knowledge base by addressing: (i) hourly changes in the Finnish electricity generation mix; and (ii) uncertainty related to what systems are used as reference and the treatment of displaced grid electricity. Our computational results suggest that when operated at constant power, the 9.5-kWe Stirling engine plant results in reduced annual primary energy use compared with any of the alternative systems. The results are not sensitive to climate or the energy efficiency or number of buildings. In comparison with the pellet-fueled district heating plant, the annual use of primary energy and CO2 emissions are reduced by a minimum of 25 and 19%, respectively. Owing to a significant displacement of grid electricity, the system's net primary energy consumption appears negative when the total built area served by the plant is less than 1200 m2. On the economic side, the maximum investment cost threshold of a CHP-based district heating system serving 10 houses or more can typically be positive when compared with oil and pellet systems, but negative when compared with a corresponding heat pump system. en
dc.format.extent 218-230
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Volume 36, issue 2 en
dc.rights openAccess en
dc.subject.other 214 Mechanical engineering en
dc.subject.other 218 Environmental engineering en
dc.subject.other 212 Civil and construction engineering en
dc.title Performance assessment of a Stirling engine plant for local micro-cogeneration en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Energy Technology en
dc.subject.keyword financial analysis
dc.subject.keyword micro-CHP
dc.subject.keyword residential buildings
dc.subject.keyword stirling engine
dc.subject.keyword 214 Mechanical engineering
dc.subject.keyword 218 Environmental engineering
dc.subject.keyword 212 Civil and construction engineering
dc.identifier.urn URN:NBN:fi:aalto-201609093797
dc.identifier.doi 10.1002/er.1799
dc.type.version acceptedVersion

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