【作者】 马永涛；

【导师】 郑宗和；

【作者基本信息】 天津大学 ， 热能工程， 2007， 硕士

【摘要】 随着我国经济的发展,电力需求问题日趋严重。夏季空调设备的广泛使用,使得许多城市30%高峰负荷由空调负荷构成,这加剧了电网负荷压力。冰蓄冷空调技术作为平衡电网负荷的重要技术,可以将空调高峰负荷转移到用电低谷时段,既可以达到为电网削峰填谷的目的,又可以降低空调系统的运行费用,因而在近些年来得到迅速发展。本文主要针对内融式冰盘管蓄冰系统的蓄冰、融冰性能进行了部分研究工作。首先采用铝塑管管材自行设计、制作了圆筒型蓄冰桶,并利用实验室现有设备组合搭建了冰蓄冷空调实验系统:制冷机组包括压缩机、冷凝器、膨胀阀、蒸发器等,工质为R22,载冷剂为乙二醇水溶液,融冰实验时采用风机盘管供冷。其次根据实验测得数据,对铝塑管材质蓄冰盘管蓄冰、融冰特性进行了分析,研究载冷剂流量对蓄冰、融冰的影响,并对实验中遇到的一些问题作出合理解释。最后根据本实验具体设计参数和测得数据,借助MATLAB/SIMULINK搭建了蓄冰桶的仿真实验台,与实验实测数据对比表明仿真实验台可以满足研究需要。因而借助仿真实验台分析了不同管材、不同管径时蓄冰盘管的性能,提出了本文对蓄冰盘管选材的建议。更多还原

【Abstract】 Along with the development of our country’s economy, the property of the power demand in city power grid is very serious in today’s China. It is estimated that cooling of buildings contributes about 30% to the China peak electrical power consumption in the summer. Ice storage technology is a method of shifting cooling loads from on-peak periods when electrical energy and demand are high, to off-peak periods when the cost of electrical energy is significantly lower and demand charges are low or often not applied at all. Ice storage systems are developing rapidly in recent years.The main purpose of this paper is to study the performance of ice generation and ice melt of internal melt ice-on-coil thermal storage system. Firstly, we designed a cylinder ice-on-coil tank with aluminum plastic tube. Then we produced an ice storage air conditioning system by ourselves, which assisted with compressor, evaporator, condenser, throttle, valves for controlling charging and discharging, fan coil unit (FCU) and so on. The working liquid of system is R22, and the ice-making medium is ethylene glycol.Secondly according to the experiment data, the paper discussed the performance of ice generation and ice melt for the cylinder ice-on-coil tank.At last, according to the experiment data and system parameter, the simulation program of the ice-on-coil tank was established with MATLAB/SIMULINK. On the basis of the simulation results, the performance of coil made by different materials and diameter were discussed.更多还原