Hua,T., Yitai,M., Minxia,L., Chuntao,L. and Li,Z.(2010): The status and development trend of the water chiller energy efficiency standard in China. Energy Policy, 38, 7497-7503.

『中国の水冷装置エネルギー効率標準の状況と発展傾向』


Abstract
 The study we present here analyzes the status of the water chiller energy efficiency standard in China. The national standard, 5+-2004, which sets the grade and scale of water chiller energy efficiency, has been implemented for five years and has produced achievements in energy-saving and emission reduction, which is a basic state policy in China. This paper presents extensive investigations on water chiller energy efficiency conducted in 2009 and compares these results with results from 2003. This analysis shows that the average energy efficiency level in 2009 was higher than in 2003. Moreover, large units with more than a 5000 kW cooling capacity have now appeared, and low efficiency units with EERs (energy efficiency ratios) below 3.8 have been phased out. The standard should be upgraded every five years. Therefore, this paper proposes a draft of a new energy efficiency standard. In the draft, thermodynamic perfectibility η is presented to be used as an indicator instead of the EER; for η, 0.4 is the minimum allowable value and 0.6 is the maximum value. There is one category of cooling capacities, from 100 to 2000 kW, in which the energy efficiency has a linear relationship with its cooling capacity.

Keywords: Water chiller; Energy efficiency standard; Thermodynamic perfectibility』

1. Introduction
2. Status of water chiller energy efficiency standards
 2.1. The national standard GB 19577-2004 (the minimum allowable values of the energy efficiency and energy efficiency grades for water chillers)
 2.2. Achievements of the present water chiller energy efficiency standards
3. Extensive investigations on water chiller energy efficiency
 3.1. Water chiller energy efficiency in 2003
 3.2. Water chiller energy efficiency in 2009
 3.3. Comparison of energy efficiency levels in 2003 and 2009
4. Development trends in water chiller energy efficiency standards in China
 4.1. Thermodynamic perfectibility analysis of GB19577-2004
 4.2. A concept for the new standard
5. Conclusion
Acknowledgements
Appendix 1
Appendix 2. The concept of thermodynamic perfectibility
References


戻る