The Mean Temperature Difference Method for Micro Heat Exchanger Analysis Considering Property Variation

8 Pages Posted: 12 Feb 2018

See all articles by Ankush D. Tharkar

Ankush D. Tharkar

Indian Institute of Technology (IIT), Bombay

Shripad P. Mahulikar

Indian Institute of Technology (IIT), Bombay

Date Written: December 21, 2017

Abstract

The influence of reducing dimensions to microscale on the performance parameter of parallel flow tubular micro heat exchanger is numerically analysed considering the thermophysical property variation effect. In the micro heat exchanger, conventional method fails to give accurate performance analysis due to significant property variation. So, a new temperature difference, i.e. Mean temperature difference correlation considering the property variation effect is derived. Operating conditions and geometric parameters are varied, keeping the inlet temperature of the both fluids and inlet velocity of the cold fluid fixed. The performance parameter such as effectiveness is evaluated. The reliability of the new mean temperature difference method is checked by calculating the percentage deviation between mean temperature difference and log mean temperature difference value for macroscale to microscale heat transfer. The results show that percentage deviation is maximum at microscale.

Keywords: Tubular Micro Heat Exchanger, Mean Temperature Difference, Log Mean Temperature Difference

Suggested Citation

Tharkar, Ankush D. and Mahulikar, Shripad P., The Mean Temperature Difference Method for Micro Heat Exchanger Analysis Considering Property Variation (December 21, 2017). International Conference on Advances in Thermal Systems, Materials and Design Engineering (ATSMDE2017). Available at SSRN: https://ssrn.com/abstract=3101267 or http://dx.doi.org/10.2139/ssrn.3101267

Ankush D. Tharkar (Contact Author)

Indian Institute of Technology (IIT), Bombay ( email )

Powai
IIT Bombay, Powai
Mumbai, Maharashtra 400076
India

Shripad P. Mahulikar

Indian Institute of Technology (IIT), Bombay ( email )

Powai
IIT Bombay, Powai
Mumbai, Maharashtra 400076
India

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