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Lin H.,Shenzhen DAS Intelligent Technology Ltd. Co | Li X.-H.,Shenzhen DAS Intelligent Technology Ltd. Co | Cheng P.-S.,Shenzhen DAS Intelligent Technology Ltd. Co | Xu B.-G.,South China University of Technology
Applied Mechanics and Materials | Year: 2013

Load imbalance of power grid leads to more peak-load power station built with huge capital cost and some environment effects. As a peak shifting technology, thermal storage technology has attracted more attentions. A new operating mode of chilled storage process integrated with air-conditioning system is proposed, and its performance is analyzed. The results show that the new operating mode can get more than 5% of power saving than the traditional mode, and achieve more than 40% power cost saving based on air-conditioning without chilled storage, both of which result from the good integration of chilled storage process with air-conditioning system. The new operating mode gives the new direction of thermal storage technology application. © (2013) Trans Tech Publications, Switzerland. Source


Lin H.,Shenzhen DAS Intelligent Technology Ltd. Co | Lin H.,South China University of Technology | Li X.-H.,Shenzhen DAS Intelligent Technology Ltd. Co | Cheng P.-S.,Shenzhen DAS Intelligent Technology Ltd. Co | Xu B.-G.,South China University of Technology
Energy and Buildings | Year: 2014

Due to higher energy consumption for application of chilled energy storage technology in air-conditioning system in China, this paper provides two new air-conditioning systems with chilled energy storage. With system both thermodynamic and economic analyses, the new system can achieve good economic performance, about 40% power cost saving, resulting from both peak-valley power price and energy saving. And the results also show that chilled storage technology can be adopted with energy saving, instead of just for cost saving in traditional use. The new systems supply a new direction for application of thermal energy storage technology. © 2014 Elsevier B.V. Source


Lin H.,South China University of Technology | Lin H.,Shenzhen DAS Intelligent Technology Ltd. Co | Li X.H.,Shenzhen DAS Intelligent Technology Ltd. Co | Cheng P.S.,Shenzhen DAS Intelligent Technology Ltd. Co | Xu B.G.,South China University of Technology
Applied Mechanics and Materials | Year: 2013

For the purpose of grid peak load shifting, chilled water storage has been paid more and more attentions to integrated with air-conditioning system. In this paper, a new air conditioning system with directly chilled water storage is given. With peak-valley Price, cost for power consumption can be saved 15%-20% by coordinated operation between chilled water storage system and air conditioning system. By sensitivity analysis of system economic performance on ratio of peak price to valley price, it is revealed that with much higher ratio of peak price to valley price, not only system economic performance can seldom be improved, but also chilled water storage is restricted for engineering utilization. This paper supplies theory reference for engineering application of chilled water storage technology. © (2013) Trans Tech Publications, Switzerland. Source


Lin H.,Shenzhen DAS Intelligent Technology Ltd. Co | Lin H.,South China University of Technology | Li X.-H.,Shenzhen DAS Intelligent Technology Ltd. Co | Cheng P.-S.,Shenzhen DAS Intelligent Technology Ltd. Co | Xu B.-G.,South China University of Technology
Energy Conversion and Management | Year: 2014

As a good load shifting technology for power grid, chilled energy storage has been paid more and more attention, but it always consumes more energy than traditional air conditioning system, and the performance analysis is mostly from the viewpoint of peak-valley power price to get cost saving. The paper presents a thermoeconomic evaluation methodology for the system with chilled energy storage, by which thermodynamic performance influence on cost saving has been revealed. And a system with chilled storage has been analyzed, which can save more than 15% of power cost with no energy consumption increment, and just certain difference between peak and valley power prices can make the technology for good economic application. The results show that difference between peak and valley power prices is not the only factor on economic performance, thermodynamic performance of the storage system is the more important factor, and too big price difference is a barrier for its application, instead of for more cost saving. All of these give a new direction for thermal storage technology application. © 2014 Elsevier Ltd. All rights reserved. Source

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