The Proceedings of the National Symposium on Power and Energy Systems
Online ISSN : 2424-2950
2013.18
Session ID : A235
Conference information
A235 Heat transfer enhancement for HFC Freon using micro fabrication surface on plate evaporator.
Yusuke KAWABATAAkio OKAMOTOYoshio ITSUMIHirohumi ARIMAYasuyuki IKEGAMI
Author information
CONFERENCE PROCEEDINGS FREE ACCESS

Details
Abstract
A Low-grade Thermal Energy Conversion (LTEC) is refocused as one of the renewable energy. For the LTEC and Refrigerator/Heat Pump, it is very important to enhance the heat transfer on heat exchanger though the available temperature deference is smaller than conventional thermal system. In last study, by using micro fabrication surface on plate evaporator, heat transfer coefficient of HFC245fa is enhanced compared with normal surface plate evaporator. In this paper, the experimental performance test as evaporator is evaluated on comparison with HFC245fa and HFC 134a The results show the boiling heat transfer coefficient of HFC 134a was larger than that of HFC245fa Heat transfer coefficient of these working fluids is estimated using Lockhart-Martinelli parameter.
Content from these authors
© 2013 The Japan Society of Mechanical Engineers
Previous article Next article
feedback
Top