Thermal-hydraulic issues of flow boiling and condensation in organic Rankine cycle heat exchangers

Archives of Thermodynamics

Dariusz MikielewiczFaculty of Mechanical Engineering, Gdansk University of Technology, Narutowicza 12, 80-233 Gdansk, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Jaros?aw MikielewiczThe Szewalski Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14 80-231 Gdansk, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar² 

[1] Faculty of Mechanical Engineering, Gdansk University of Technology, Narutowicza 12, 80-233 Gdansk, Poland;The Szewalski Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14 80-231 Gdansk, Poland

关键词: Keywords: Dynamics of heat exchangers;    Flow stability;    Heat exchangers;   

DOI  :  10.2478/v10173-012-0002-3

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 】

In the paper presented are the issues related to the design and operation of micro heat exchangers, where phase changes can occur, applicable to the domestic micro combined heat and power (CHP) unit. Analysed is the stability of the two-phase flow in such unit. A simple hydraulic model presented in the paper enables for the stability analysis of the system and analysis of disturbance propagation caused by a jump change of the flow rate. Equations of the system dynamics as well as properties of the working fluid are strongly non-linear. A proposed model can be applicable in designing the system of flow control in micro heat exchangers operating in the considered CHP unit.

【 授权许可】

Unknown