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ScienceDirect ScienceDirect Available online at www.sciencedirect.com Available online at www.sciencedirect.com AvAavialailbalbeleonolninlieneatawt www.s.csiceinecnecdeidreircetc.ct.ocmom Energy Procedia 00 (2017) 000–000 Energy Procedia 00 (2017) 000–000 ScienceDirect www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia ScienceDirect EEnneergrgyyPProrocceeddiaia10203 (2017) 030103–03020 1st International Conference on Sustainable Energy and Resource Use in Food Chains, 1st International Conference on Sustainable Energy and Resource Use in Food Chains, ICSEF 2017, 19-20 April 2017, Berkshire, UK ICSEF 2017, 19-20 April 2017, Berkshire, UK DesignoTfhrea1d5tihaIlnteurnrbatoiomnalaScyhmipnoesiruymfonrDsisutrpicetrHceraittinicgalndCCOoolinsgystems Design of radial turbomachinery for supercritical CO2 systems using theoretical and numerical CFD methodologies using theoretical and numerical CFD methodologies Assessing the feasibility of using the heat demand-outdoor teNmorpmearnaHtuolraeinfdu,nGcituisoenppfeoBrianclhoin*g, -MtearxmencdeiDsteriMcitohl ,eSaatmdieramSaynad Sfoarraevci a, st abab Norman Holainda, Giuseppe Bianchib*, Maxence De Miola, Samira Sayad Saravib, Savvas A. Tassoub, Arthur Lerouxa, Hussam Jouharab Savvas A. Tassoub, Arthur Lerouxa, Hussam Jouharab I. Andrića,b,c*, A. Pinaa, P. a b c c Ferrão , J. Fournier ., B. Lacarrière , O. Le Corre a Enogia SAS, 13015 Marseille, France aEnogia SAS, 13015 Marseille, France bBrunel University London, Institute of Energy Futures, Center for Sustainable Energy Use in Food Chains, Uxbridge, Middlesex UB8 3PH, UK bBruna el University London, Institute of Energy Futures, Center for Sustainable Energy Use in Food Chains, Uxbridge, Middlesex UB8 3PH, UK IN+ Center for Innovation, Technology and Policy Research - Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal bVeolia Recherche & Innovation, 291 Avenue Dreyfous Daniel, 78520 Limay, France cDépartement Systèmes Énergétiques et Environnement - IMT Atlantique, 4 rue Alfred Kastler, 44300 Nantes, France www.elsevier.com/locate/procedia 2 Abstract Abstract In high temperature waste heat to power conversion applications, bottoming thermodynamic cycles using carbon dioxide in In high temperature waste heat to power conversion applications, bottoming thermodynamic cycles using carbon dioxide in Abstract supercritical phase (sCO2) have recently become a promising developing technology that could outperform conventional Organic supercritical phase (sCO2) have recently become a promising developing technology that could outperform conventional Organic Rankine Cycle systems in terms of efficiency and compactness. Moreover, carbon dioxide is a fluid chemically stable, reliable, Rankine Cycle systems in terms of efficiency and compactness. Moreover, carbon dioxide is a fluid chemically stable, reliable, District heating networks are commonly addressed in the literature as one of the most effective solutions for decreasing the low-cost, non-toxic, non-flammable and readily available. Supercritical CO2 power generation systems have been investigated by low-cost, non-toxic, non-flammable and readily available. Supercritical CO2 power generation systems have been investigated by greenhouse gas emissions from the building sector. These systems require high investments which are returned through the heat scientists and engineers mostly for large scale applications. However, when the electrical target output power is lower (50-100 scientists and engineers mostly for large scale applications. However, when the electrical target output power is lower (50-100 sales. Due to the changed climate conditions and building renovation policies, heat demand in the future could decrease, kW), there are additional challenges on the turbomachinery design that need to be addressed. In the current research work, with kW), there are additional challenges on the turbomachinery design that need to be addressed. In the current research work, with prolonging the investment return period. reference to simple regenerative cycle architecture, the design of small scale sCO2 radial compressor and turbine are firstly reference to simple regenerative cycle architecture, the design of small scale sCO2 radial compressor and turbine are firstly The main scope of this paper is to assess the feasibility of using the heat demand – outdoor temperature function for heat demand addressed through the similarity approach. Further to this study, numerical CFD simulations are performed to optimize the 3D addressed through the similarity approach. Further to this study, numerical CFD simulations are performed to optimize the 3D forecast. The district of Alvalade, located in Lisbon (Portugal), was used as a case study. The district is consisted of 665 design of the impellers and of the stators. In particular, steady state RANS simulations using the mixing plane approach are carried design of the impellers and of the stators. In particular, steady state RANS simulations using the mixing plane approach are carried buildings that vary in both construction period and typology. Three weather scenarios (low, medium, high) and three district out taking into account real gas properties for CO2. out taking into account real gas properties for CO2. renovation scenarios were developed (shallow, intermediate, deep). To estimate the error, obtained heat demand values were © 2017 The Authors. Published by Elsevier Ltd. © 2017 The Authors. Published by Elsevier Ltd. compared with results from a dynamic heat demand model, previously developed and validated by the authors. © 2017 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of the scientific committee of the 1st International Conference on Sustainable Energy and Peer-review under responsibility of the scientific committee of the 1st International Conference on Sustainable Energy and The results showed that when only weather change is considered, the margin of error could be acceptable for some applications Peer-review under responsibility of the scientific committee of the 1st International Conference on Sustainable Energy and Resource Use in Food Chains. Resource Use in Food Chains. R(ethsoeuerrcreorUisne ainnFuoaolddCemhainds. was lower than 20% for all weather scenarios considered). However, after introducing renovation scenarios, the error value increased up to 59.5% (depending on the weather and renovation scenarios combination considered). Keywords: supercritical CO2; waste heat recovery; turbomachinery design; power generation Keywords: supercritical CO2; waste heat recovery; turbomachinery design; power generation The value of slope coefficient increased on average within the range of 3.8% up to 8% per decade, that corresponds to the decrease in the number of heating hours of 22-139h during the heating season (depending on the combination of weather and renovation scenarios considered). On the other hand, function intercept increased for 7.8-12.7% per decade (depending on the coupled scenarios). The values suggested could be used to modify the function parameters for the scenarios considered, and improve the accuracy of heat demand estimations. © 2017 The Authors. Published by Elsevier Ltd. * Corresponding author. Tel.: +44-1895-267707; fax: +44-1895-269777. P*eCero-rrevspieowndiunngdaeurthreosr.pToenls.:ib+i4l4it-y18o9f5t-h2e67S7c0i7e;nftaixfi:c+C44o-m18m95it-t2e6e97o7f7T. he 15th International Symposium on District Heating and E-mail address: giuseppe.bianchi@brunel.ac.uk E-mail address: giuseppe.bianchi@brunel.ac.uk Cooling. 1876-6102 © 2017 The Authors. Published by Elsevier Ltd. 1K87e6y-w6o1r0d2s:©H2e0a1t 7deTmhaenAdu; tFhorresc.aPsut;bClilsihmeadtebychEalnsegveier Ltd. Peer-review under responsibility of the scientific committee of the scientific committee of the 1st International Conference on Sustainable Energy Peer-review under responsibility of the scientific committee of the scientific committee of the 1st International Conference on Sustainable Energy and Resource Use in Food Chains. and Resource Use in Food Chains. 1876-6102 © 2017 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of the Scientific Committee of The 15th International Symposium on District Heating and Cooling. 1876-6102 © 2017 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of the scientific committee of the 1st International Conference on Sustainable Energy and Resource Use in Food Chains. 10.1016/j.egypro.2017.07.256PDF Image | Design of Radial Turbomachinery for S CO2 CFD
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