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Implementation and evaluation of low temperature waste heat recovery power cycle using NH3 in an organic rankine cycle [Elektronisk resurs]

Öhman, Henrik, 1964- (författare)
Sustainable development if energy, water and environment systems / 2011 / Croatia, SDEWS-11, 25-29 September 
KTH Skolan för industriell teknik och management (ITM) (utgivare)
Publicerad: Zagreb : Faculty of Mechanical Engineering and Naval Architecture, 2011
Engelska.
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  • With increasing cost for power generation the opportunities for small scale powergeneration from waste heat have increased. The awareness of untapped resources such aslocal waste heat streams as well as the available range of technology and products toharvest such streams is increasing steadily. For ORC power plant applications the numberof open parameters is large though the reported field data is limited, particularly for lowtemperature waste heat recovery.This paper presents field data and a performance analysis of an ORC powergeneration plant operating with NH3 as media. The ORC unit operates on waste heat froma Swedish pulp mill at an available temperature level of 75 to 85degC. Performance at lowwaste heat temperatures and during capacity variation is reported as well as an analysisof the particular investment case.The field data was generated by remote logging of control system information during a 15day period.The results show a thermal efficiency of 8 to 9% during a capacity range of 50 to 100%power generation. The results indicate a flat thermal efficiency curve from 20 to 100%power generation. The investment case is a supplier own-and-operate type of arrangement supplying thepulp mill with electric power at a predefined cost during a long period of time. 

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Engineering and Technology  (hsv)
Mechanical Engineering  (hsv)
Energy Engineering  (hsv)
Teknik och teknologier  (hsv)
Maskinteknik  (hsv)
Energiteknik  (hsv)
Energy Technology  (kth)
Energiteknik  (kth)
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