过冷水动态冰蓄冷空调融冰取冷特性的实验研究

GIEC OpenIR > 中国科学院广州能源研究所

	过冷水动态冰蓄冷空调融冰取冷特性的实验研究
其他题名	The experiment study of the discharging characteristics of the dynamic ice cold storage air conditioning system
	张正
导师	冯自平
	2009-05-27
学位授予单位	中国科学院广州能源研究所
学位授予地点	广州能源研究所
学位名称	硕士
关键词	动态冰蓄冷融冰过程取冷特性融冰效率
摘要	随着社会经济水平的不断发展，人们对生活环境和工作环境的要求有了很大提高，空调用量不断增加。并且空调用电高峰往往与工商业用电高峰同步，进一步造成高峰期电力资源短缺，电力峰谷差矛盾的加剧。冰蓄冷空调就是为了实现电网负荷削峰平谷而发展起来的一项实用技术，对电网移峰填谷具有重大意义。动态冰蓄冷技术是冰蓄冷空调的重要研究方向，为了更好的指导工程应用，本文利用中科院广州能源研究所自主研发的动态冰蓄冷空调系统，主要作了以下几项工作： ⑴ 进行动态冰蓄冷空调系统的融冰实验，分析不同初始蓄冰量、不同末端负荷、不同取冷流量、槽内回水速度等因素对融冰取冷特性的影响。结果表明：初始蓄冰量、末端负荷、取冷流量对融冰取冷特性的影响很小，槽内回水速度对融冰取冷起关键作用。 ⑵ 通过改变取水、回水布管方式，以获得最佳取冷速率（或融冰速度）的取水口和回水口的基本设计原则和依据。结果表明，存在最佳的融冰布管方式，取水口对融冰效率的影响很小。 ⑶ 定性阐明蓄冰槽内因回水和取水引起的速度场或其他参数对融冰速度的影响规律；通过本课题的实验研究，得到了动态冰蓄冷空调系统融冰取冷特性的关键参数和取回水的基本设计原则，为动态冰蓄冷空调的进一步研发提供了参考依据。
其他摘要	With the development of social economy, the electricity consumption by air conditioning increases unceasingly. Even the electricity peak due to the air conditioning is often at the same time with the industry trade peak, which worsen creates the peak electric power resources shortage, and the electricity difference between on-peak hours and off-peak hours is becoming larger. The ice-storage air conditioning system, as a powerful technology of balancing electric loads from on-peak hours, has the great significance to the electric network. The dynamic ice cold storage technique is the important research direction of the ice storage air conditioning system, In order to obtain guidelines for engineering applications, experiments were conducted using the dynamic ice cold storage air conditioning system developed by Guangzhou Institute of Energy Conversion ,and the paper mainly focused on the following aspects; 1) The influences of different initial cool thermal storage rate, different cooling load of end-users, different discharge water flow rate and different ice-melting velocity on the discharging characteristics were analyzed in detail, the results show that the ice-melting velocity plays an important role in discharging characteristics, and initial cool thermal storage rate, discharge water flow rate and cooling load of end-users have little effect on the discharging characteristics. 2) In order to get the optimum pipeline designs in ice storage tank during the ice charging process, several ice-melting experiments were conducted. The results show that there exists an optimum pipeline arrangement in the discharging process considering ice discharging efficiency, and the output water of the ice storage tank has little effect on the velocity of ice-melting. 3) The influence on the discharging efficiency of the velocity field in the ice storage tank produced by the input water and output water was analyzed. Through this experimental study, the crucial discharging parameters of the dynamic ice storage air conditioning system were obtained; at the same time, an optimum pipeline design in the ice storage tank during ice discharging process was also obtained. And the experimental foundation and the design instruction were to be provided for the product development of the dynamic ice storage air conditioning.
页数	62
语种	中文
文献类型	学位论文
条目标识符	http://ir.giec.ac.cn/handle/344007/5866
专题	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	张正. 过冷水动态冰蓄冷空调融冰取冷特性的实验研究[D]. 广州能源研究所. 中国科学院广州能源研究所,2009.

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