Influence of heat recuperation in ORC power plant on efficiency of waste heat utilization

Archives of Thermodynamics

Aleksandra Borsukiewicz-GozdurDepartment of Heat Engineering, West Pomeranian University of Technology, al. Piastów 19, 70-310 Szczecin, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Department of Heat Engineering, West Pomeranian University of Technology, al. Piastów 19, 70-310 Szczecin, Poland

关键词: Keywords: Heat recuperation;    ORC;    Subcritical power plant;    Supercritical organic cycle;   

DOI  :  10.2478/v10173-010-0032-7

学科分类：能源（综合）

来源: Polska Akademia Nauk * Oddzial w Gdansku, Instytut Maszyn Przeplywowych / Polish Academy of Sciences, Institute of Fluid-Flow Machinery

【 摘 要 】

The present work is devoted to the problem of utilization of the waste heat contained in the exhaust gases having the temperature of 350 °C. Conversion of the waste heat into electricity using a power plant working with organic fluid cycles is considered. Three Organic Rankine Cycle (ORC) power plant solutions are analysed and compared: a solution with the basic, single thermodynamic conversion cycle, one with internal heat recuperation and one with external heat recuperation. It results from the analysis that it is the proper choice of the working fluid evaporation temperature that fundamentally affects the maximum of the ORC plant output power. Application of the internal heat recuperation in the plant basic cycle results in the output power increase of approx. 5%. Addition of the external heat recuperation to the plant basic cycle, in the form of a secondary supercritical ORC power cycle can rise the output power by approx. 2%.

【 授权许可】

Unknown