کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
648737 | 1457201 | 2009 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Environmental performance and economic analysis of all-variable speed chiller systems with load-based speed control Environmental performance and economic analysis of all-variable speed chiller systems with load-based speed control](/preview/png/648737.png)
There are increasing views on implementing all-variable speed chiller plants in place of conventional constant speed plants. Supporters of these views claim that all-variable speed chiller systems can operate much more efficiently at part load in response to changes in building cooling load. This paper introduces load-based speed control for all-variable speed plants to optimize their environmental performance. Thermodynamic-behaviour chiller system models were developed to perform environmental assessment (in terms of annual electricity and water consumption) for typical constant speed and all-variable speed chiller systems operating for the cooling load profile of a local office building. Operating cost differences between the two systems were calculated and compared in an economic analysis. Applying load-based speed control to the variable speed chiller plant can decrease the annual total electricity use by 19.7% and annual water use by 15.9% relative to the corresponding constant speed plant. The significance of this study is to provide more insights into how to make chiller systems more sustainable.
Journal: Applied Thermal Engineering - Volume 29, Issues 8–9, June 2009, Pages 1721–1729