Next Article in Journal
From Talking Heads to Communicating Bodies: Cybersemiotics and Total Communication
Next Article in Special Issue
Entropy Transport Equation in Large Eddy Simulation for Exergy Analysis of Turbulent Combustion Systems
Previous Article in Journal
Estimation of an Entropy-based Functional
Previous Article in Special Issue
Improvement of Energy Conversion/Utilization by Exergy Analysis: Selected Cases for Non-Reactive and Reactive Systems
Open AccessArticle

Second-Law Analysis to Improve the Energy Efficiency of Screw Liquid Chillers

Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
Entropy 2010, 12(3), 375-389; https://doi.org/10.3390/e12030375
Received: 1 January 2010 / Revised: 2 February 2010 / Accepted: 1 March 2010 / Published: 4 March 2010
(This article belongs to the Special Issue Exergy: Analysis and Applications)
This work applies the second-law analysis of thermodynamics to quantify the exergy destruction of the components of screw liquid chiller, and to identify the potential for each component to contribute to improve the overall energy efficiency of the system. Three screw liquid chiller units were built to demonstrate the feasibility of the model presented herein. Unit A was a 100 RT water-cooled screw liquid chiller. Unit B was modified from Unit A by switching the old condenser for a new one with a greater heat transfer, and Unit C was modified from Unit B by exchanging the compressor for a more efficient one. The results indicate that the compressor has the largest potential to improve energy efficiency, followed in order by the condenser, and then the evaporator. The second law analysis may help engineers to focus on the components with higher exergy destruction and quantify the extent to which modifying such components can influence, favorably or unfavorably, the performance of other components of the screw liquid chiller. View Full-Text
Keywords: second-law analysis; screw liquid chiller; energy efficiency; irreversibility; exergy destruction second-law analysis; screw liquid chiller; energy efficiency; irreversibility; exergy destruction
Show Figures

Figure 1

MDPI and ACS Style

Lee, T.-S. Second-Law Analysis to Improve the Energy Efficiency of Screw Liquid Chillers. Entropy 2010, 12, 375-389.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop