PDF《堃霖冷冻机械股份有限公司》

伊乩涠郴倒煞萦邢薰Kuen Ling Machinery Refrigerating Co.

, LTD. -1- 储冰槽由多层多回路之PE盘管环绕於槽体 内部而组成,槽内 PE 管外周围充满乾净的水, PE 管内部则由乙二醇溶液等卤水循环.储冰槽 是利用夜间离峰用电运转压缩机产生低於 0℃ 以下之低温卤水,利用储冰泵循环於 PE 管内部 吸收外部水之热量,最后水产生相变化冻结成 冰以储存大量潜热.在日间尖峰用电期间,储 冰槽内卤水再以融冰泵循环与二次侧较高温回 水於板式热交换器进行热交换,将已储存的冰 融解以释放出冷能提供空调负荷需求.其目的 是为在尖峰期间减少或停止运转主机压缩机的 目的,而将空调用电由尖峰时间移转到离峰时 间,如此不但可降低尖峰用电,减少电力契约 容量;

同时也可以享受离峰用电优惠电价以节 省电费. 一般储冰槽在盘管内侧循环低温卤水将管 外静止储水结冰於管壁,静止储水与卤水热交 换之主要热阻抗为传导与对流热阻抗,外部静 止水之自然对流热阻抗较大,所以储冰效率较 不佳.而在溶冰阶段,卤水管与结冰间管壁冰 迅速溶冰成水后逐渐形成静止水层,成为热阻 抗也会使溶冰效率减缓,甚至在溶冰末期虽有 剩余冰量,却因漂浮於上层而无法完全释冷. 动态储冰槽主要是利用间续搅拌以提升外 部储水储冰或融冰之热传效率.储冰槽内盘管 间以隔板隔成数空间室,再配以一小型循环水 泵将水导流而上下循环於各隔板间室,如此可 以利用最小的动力泵构成一动态冰水循环水流, 储冰与融冰时可以提高对流传热,而提高储冰 速度与效率. The dynamic ice storage tank is assembled by multi-loop and multi-layer PE coils for a specific purpose, fresh water all over the tank outside the PE tubes, and inside the tubes is circulating by glycol. The system is running refrigerating compressor with off-peak power at night. Water will be frozen into ice to store plenty latent heat by phase change while the temperature of brine is lower than 0℃ circulating by glycol pump during charging periods. The ice is discharged to reduce load profile of on-peak air conditioning during the day-time by re-circulating brine and heat exchange with the warm water from secondary loop. The purpose of using ice storage system is to shift on-peak air conditioning load, it not only can reduce on-peak and contracted demand but also save electric bill by preferential rates. For general ice storage tank, the brine is circulated inside the tube and leave water still around its outer surface to be frozen into ice. The mainly heat exchange between still water and brine is conduction and free convection, however, the thermal resistance of free convection is greater than force one, therefore, the ice charge is less efficient. In the forepart of discharge period, the ice near the wall of tubes is melting rapidly and then generate still water layer as thermal resistance to reduce ice discharge effect. Even there is broken ice still remains in the end of discharge process, it still cannot melt completely to release cold energy because it is floating on the up layer water. Periodical agitating device is installed in the Dynamic Ice Storage System to improve the heat exchange and ice discharge efficiency. The tank has been divided into several chambers by partition and the chilled water will be circulated through chambers by small auxiliary pump, thus the dynamic circulating chilled water flow can be made by the minimum power pump, and which improves the thermal convection in both charge and discharge period. In other words, it is much more efficient and can shorten the charge time for sure. Klean? 动态储冰槽简介 Introduction to Klean? Dynamic Ice Storage Tank 储冰槽内部动态循环示意图 Diagram of Dynamic Chilled Water Circulating -2-

一、热交换面积大储冰率高 聚乙烯(Polyethylene, PE)储冰盘管,紧密 排列,热交换面积大,配合储冰加速泵, 储冰效率高.

二、溶冰速率快 动态储冰槽利用间续搅拌加速槽内冰水之 对流热传,提升溶冰的效率.解决一般塑 胶类盘管之储冰槽溶冰效率不良之缺点.

三、结冰率大 动态储冰槽盘管排列整齐,结冰率(Ice packing factor, IPF)高达 75%以上.

四、安装空间最省 动态储冰槽 IPF 高,故储冰槽所需空间小, 长方型规格储冰槽定型排列,空间利用性 高,所需空间最节省,比一般容器式储冰 槽节省 30~40%空间.

五、系统设计简单方便 规格化定型储冰槽,密闭式卤水系统,储 冰系统设计最简便.

六、耐压不锈钢机械接头 采用专利设计机械接头,具有防蚀、耐压 与防泄之功能,且可以快速拆卸以进行维 修或更换盘管.

七、不锈钢槽体耐用性高 不锈钢槽体,提供长期使用,安全可靠, 最符合经济效益.

八、保温性强,减少热损失 配合高湿度气候条件,动态储冰槽加强保 温厚度,减少槽体结露滴水现象,并可减 少储冰热损失,节约能源.

九、适用於低温供风系统 动态储冰槽溶冰速度快 , 可提供低温冰水, 适合应用於冷风供应系统 , 节省冰水流量, 降低更多水泵马力,减少送风量,缩减风 管管径,缩小空调机房,增加建筑楼板面 积等多项优点. 1. Large heat exchange area, high efficiency PE(Polyethylene) ice storage tubes are compact and formed large heat exchange area to bring high ice storage efficiency with accelerative charge pump. 2. Rapid discharging Periodical agitating device is installed in the Dynamic Ice Storage System to improve the heat exchange and ice discharge efficiency which settles the slow-melting defect of general plastic tubes. 3. High ice packing factor Heat exchange tubes are well-arranged in the dynamic ice storage tank to gain over 75% ice packing factors (IPF). 4. Save install space Because of high IPF, the dynamic ice storage system requires minimum space for installation. The normalized rectangular storage tanks can be arranged regularly to save 30~40% space as compared with other general vessel tanks. 5. System is simple for easy design Normalized ice storage tank with closed brine circulation makes the system simple and easy. 6. High pressure resistance SUS304 mechanical joint With patent design, mechanical joint for anti-corrosion, pressure resistance, anti-leakage, and easy to maintain or replace the coil by quick dismount and couple if necessary. 7. Durable stainless steel tank Stainless steel tank not only keeps long-term service life, safe and stable operation but also conform to the economic benefits. 8. Good insulation to reduce heat loss The thickness of insulation of dynamic ice storage tank has been increased to fit the high humid climate, and will reduce dew and heat loss to save energy. 9. Suitable for lower temperature air supply system The dynamic ice storage tank keeps rapid ice melting effects, supplies lower temperature water which is suitable for cool air supply system. The advantages of this system include saving more horsepower of pump, reducing chilled water flow rate, airflow rate, the diameter of duct and the size of equipment room to increase building floor area. Klean? 动态储冰槽之优点 Benefits of Klean? Dynamic Ice Storage Tank -3- 储冰槽内部以PE材质隔板与多回路盘管组 合而成,为主要储冰区域.内槽采 SUS304 不 锈钢板氩焊而成;

内部结构补强角铁、拉杆及 卤水分配头等皆为耐腐蚀 SUS304 材质.四周 槽壁内层为 80mm 聚乙烯(Polyethylene)保温 材;

外层为20 mm PU 发泡(Expanded Polyurethane)保温库板,保温板总热阻抗系数 大於R-18 . 底部保温为75mm PS (Polystyrene),顶部为 50mm PU 发泡保温库 板.储冰槽剖视图如下说明: The ice storage tank is assembled by PE partition, multi-loop and multi-layer PE coils. The inner wall of tank is SUS

304 stainless steel sheets that assembled by TIG, and all the structure is reinforced by angle steels, distributed head pipes and pulling rods are made of anti-corrosion SUS304 stainless steel. The insulation materials around the tank are: first layer is

80 mm PE (polyethylene) formed plate, second layer is

20 mm PU (polyurethane) foam metal panel, and the sum of thermal resistance is greater than R-18. The insulation material under the tank is 75mm hard PS (polystyrene) plate and 50mm PU (polyurethane) foam metal cover on the top. The cutaway view of dynamic ice storage tank is as following: 说明(Description): A、冰量或液位指示计(ice quantities or liquid level indicator) B、JIS 10K 法兰接口(JIS 10K flange joint) C、人孔盖(manhole cover ) D、不锈钢分布管(SUS304 stainless steel tube for distributing) E........