Document Type

Conference Paper


Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence



Publication Details

McGovern, J. A. and Oladunjoye, S., Non-Intrusive Second Law Performance Evaluation of a Domestic Freezer in Proceedings of the 8th International Conference on Sustainable Energy and Environmental Protection—Part 2: State of the Art on Environmental Protection, Olabi, A. G. and Alaswad, A. (Eds.), University of the West of Scotland, Paisley, PA1 2BE, UK, August 2015, pp.48–53.

© University of the West of Scotland, 2015

The authors have asserted their moral rights.


This paper describes non-intrusive performance testing and second law, exergy-based, performance evaluation of a small, contemporary domestic freezer that used R600a refrigerant. The methodology presented is associated with logging of temperatures and the instantaneous power consumption. It gives a ‘second law of thermodynamics’ perspective on operating performance by providing rational efficiency values and by localizing and quantifying the instantaneous exergy destruction rates. This approach is compared to a more conventional ‘first law’ energy analysis. Suggestions are made for the standardization of such an approach in order to enhance the sustainability of domestic freezers. Keywords: Domestic freezer, Performance testing, Performance evaluation, Exergy,