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Title: Design considerations on a small scale supercritical CO2 power system for industrial high temperature waste heat to power recovery applications
Authors: Bianchi, G
Tassou, S
ge, Y
jouhara, H
tsamos, K
leroux, A
de miol, M
Issue Date: 2016
Citation: 1st European Seminar on Supercritical CO2 (sCO2) Power Systems, (2016)
Abstract: Existing industrial processes are energy intensive environments with a multitude of waste heat streams at different temperature levels whose recovery would undoubtedly contribute to the enhancement of the sustainability of the industrial sites and their products. In particular, the geographical distribution and size of the available waste heat potential is very widespread with most sources being small to medium size, up to 1 MW and fewer of larger size above 1 MW. Among the waste heat to power conversion approaches, the usage of bottoming thermodynamic cycles based on carbon dioxide in supercritical phase (sCO2) provides significant advantages compared to more conventional technologies such as the Organic Rankine Cycle (ORC) systems that are nowadays commercially available even at small scale (~10 kWe). However, unlike the large sCO2 systems that are already on the market (~ MWe), medium and small size ones are still under development. In the current work, the challenges involved in the design of a small scale sCO2 system are considered through thermodynamic analysis (1st and 2nd law) as well as by a preliminary turbomachinery design based on the similarity approach. With reference to a simple regenerative cycle architecture, the study provides details on the design parameters and performance trends as well as on the operational and manufacturing constraints that the compressor imposes to the theoretical values.
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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