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水冷冷水机组中央空调冷冻水进出水温度设置多少

2016-06-28 17:18:17   来源:http://sxt.qblzl.com/       
导读:空调水系统可分为冷冻水和冷却水两部分,这两部分在系统中起着至关重要的作用。今天小编给大家介绍的是关于冷冻水的相关知识,水冷冷水机组中央空调冷冻水进出水温度设置多少合适?
        空调水系统可分为冷冻水和冷却水两部分,这两部分在系统中起着至关重要的作用。今天小编给大家介绍的是关于冷冻水的相关知识,水冷冷水机组中央空调冷冻水进出水温度设置多少合适?

给大家分析一下冷冻水、冷却水和冷凝水之间的区别。

        中央空调主机由压缩机、蒸发器、冷凝器和节流阀四大部分组成。流经冷凝器的水就是冷却水  ,流经蒸发器的水就是冷冻水。

        冷冻水是把空调制的冷量通过管道.水泵送入房间,再由房间的风机盘管交换给空间,冷冻水就是把冷量从空调机房传送到使用房间的运输工具。

        冷却水是空调在制冷过程中产生大量热量通过管道.水泵送入室外冷却塔进行冷却,冷却水就是把主机产生的热量送出室外的运输工具。

        而冷凝水是房间风机盘管在冷热交换时从空气中产生的冷结水,与系统的水无关。

        水系统中主机与末端是通过冷冻水换热,主机与冷却塔经过冷却水换热,末端空气处理设备在得到冷冻水的冷热量后与室内空气换热会产生凝结水。

水冷冷水机组冷冻水进出水温度是否会影响机组性能?

        在实际运行的时候,由于环境温度和冷冻水出水温度不同,因此工艺冷水机制冷量和压缩机的耗功也是变化的。水冷冷水机组,它的制冷量随着冷冻水出水温度的提高而增加,随着环境进风温度的提高而减少。

        水冷冷水机组的耗功是随着冷冻水出水温度的提高而增加,随环境温度提高而增加,这是由于冷水机的冷冻水提高时,蒸发压力提高,如果冷凝压力不变,压缩比减小,耗功减少,但这个时候水冷冷水机组制冷量增加,所需要的功率更大,隐藏压缩机总的耗功仍然是增加的。

        如果环境温度提高,冷凝压力提高,在水冷冷水机组的冷冻水出水温度保持不变,这个时候压缩比增大,耗功增加,那么由于制冷量减少,所需的功率略有减少,但是压缩机总的耗功仍是增大的。

水冷冷水机组中央空调冷冻水进出水温度设置多少?一般是出水7度,回水12度,,进出水温差保持5度为什么?

五度温差取决以下几方面
1、冷媒特性蒸发冷凝温度。
2、水的比热。
3、谁在管内的流速。
4、水与制冷剂的大换热效率。
5、其他。

       
具体,如果一个系统运行问大于或者小于5℃,这个系统不是佳配置的系统,相差不多或温差在4℃、7℃也是可以的。

        以上内容由北京奇保良制冷设备有限公司提供,如果您有更多关于水系统中央空调的内容需要了解,敬请拨打热线,4006345365,这里会给你详尽的解答。

相关热词搜索:温度设置

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