Journal article Open Access

Comparative Study of Sub-Critical and Supercritical ORC Applications for Exhaust Waste Heat Recovery

Buket Boz; Alvaro Diez


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{
  "inLanguage": {
    "alternateName": "eng", 
    "@type": "Language", 
    "name": "English"
  }, 
  "description": "Waste heat recovery by means of Organic Rankine<br>\nCycle is a promising technology for the recovery of engine<br>\nexhaust heat. However, it is complex to find out the optimum<br>\ncycle conditions with appropriate working fluids to match exhaust<br>\ngas waste heat due to its high temperature. Hence, this paper<br>\nfocuses on comparing sub-critical and supercritical ORC conditions<br>\nwith eight working fluids on a combined diesel engine-ORC<br>\nsystem. The model employs two ORC designs, Regenerative-ORC<br>\nand Pre-Heating-Regenerative-ORC respectively. The thermodynamic<br>\ncalculations rely on the first and second law of thermodynamics,<br>\nthermal efficiency and exergy destruction factors are the fundamental<br>\nparameters evaluated. Additionally, in this study, environmental<br>\nand safety, GWP (Global Warming Potential) and ODP (Ozone<br>\nDepletion Potential), characteristic of the refrigerants are taken<br>\ninto consideration as evaluation criteria to define the optimal ORC<br>\nconfiguration and conditions. Consequently, the studys outcomes<br>\nreveal that supercritical ORCs with alkane and siloxane are more<br>\nsuitable for high temperature exhaust waste heat recovery in contrast<br>\nto sub-critical conditions.", 
  "license": "http://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "@type": "Person", 
      "name": "Buket Boz"
    }, 
    {
      "@type": "Person", 
      "name": "Alvaro Diez"
    }
  ], 
  "url": "https://zenodo.org/record/1315792", 
  "image": "https://zenodo.org/static/img/logos/zenodo-gradient-round.svg", 
  "datePublished": "2018-01-01", 
  "headline": "Comparative Study of Sub-Critical and Supercritical ORC Applications for Exhaust Waste Heat Recovery", 
  "version": "10008559", 
  "keywords": [
    "Internal combustion engine", 
    "organic rankine cycle", 
    "waste heat recovery", 
    "working fluids."
  ], 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.5281/zenodo.1315792", 
  "@id": "https://doi.org/10.5281/zenodo.1315792", 
  "@type": "ScholarlyArticle", 
  "name": "Comparative Study of Sub-Critical and Supercritical ORC Applications for Exhaust Waste Heat Recovery"
}
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