Keywords
carbon emission
greenhouse gas
variable speed compressor
retrofitting compressor.
How to Cite
Abstract
In this study, retrofitting of a fixed speed refrigeration system to a variable speed refrigeration system is investigated. Economical and technical benefits of the retrofitting procedure are also studied. Refrigeration systems are usually designed to overcome maximum load conditions. However, they work under partial load in most of their life cycle. Hence, in this study a variable speed compressor that equalizes the cooling load to the demand that assures significant energy saving is considered. As a result of this study, the retrofitted variable speed compressor performed 17% decreased energy consumption versus the thermostatic controlled fixed speed system. Also, the retrofitting procedure provided considerable payback time. From the result, 10750 kilograms less carbon emission per year as an environmental benefit within retrofitting procedure is obtained.
References
Air Conditioning and Refrigeration Institute (ARI) Standard 550/590. Performance Rating of Water Chilling Packages Using the Vapor Compression Cycle 2003.
Bitzer International Report (BIR) A-600-1. Competence in capacity control 2006.
Ekren O, Küçüka S. Energy Saving Potential of Chiller System with Fuzzy Logic Control: Int. J of En Res 2010; 34: 897-906.
Ekren O, Isler Y, Sahin S. Comparison of Different Controllers for Variable Speed Compressor and Electronic Expansion Valve Int. J of Ref 2010; 33: 1161-1168. http://dx.doi.org/10.1016/j.ijrefrig.2010.05.005
Janssen H, Kruse H. Continuous and discontinuous capacity control for high-speed refrigeration compressors. Paper presented at the Purdue Compressor Technology Conference 1984 USA.
Tassou SA, Marquand CJ, Wilson DR. Comparison of the performance of capacity-controlled and conventional controlled heat-pumps. App En 1983; 14: 241-256. http://dx.doi.org/10.1016/0306-2619(83)90051-X
US Environmental Protection Agency (EPA). Greenhouse Gas Emissions 2010. Available at http://www.epa.gov/climatechange/emissions/ind_home.html.
World Energy Council (WEC). Deciding the Future: Energy Policy Scenarios to 2050-Executive Summary 2007.
World Energy Council (WEC). Energy Efficiency Policies around the World: Review and Evaluation Executive Summary 2008.
Zubair SM, Bahel V. Compressor capacity modulation schemes. Heating Piping Air-condition 1989; 1: 135-143.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 2015 Orhan Ekren