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Hydronic balancing of cooling systems

制冷系统的水力平衡

Consuming points in a cooling system which are far away from the pump are not supplied with enough water without hydronic balancing. Others, however, which are close to the pump are oversupplied. This does not only cost valuable energy and increases costs, but also influences the comfort.

制冷系统中的消耗点距离泵站较远时,没有足够的水量,无法获得水力平衡,而距离泵较近的地方却供给过剩。这不仅会导致能量浪费,也会影响用户舒适度。

Hydronic balancing is understood to mean an optimum water distribution in the system, e. g. the required volume flow to the radiator is guaranteed through presettable valves (PICV).  With the help of the hydronic balancing all components, such as radiators, regulating valves, balancing valves, pumps and pipes are co-ordinated and balanced.

水力平衡意味着系统中最优水量分配,比如通过预先设置温控阀开度保证需求流量,使水力平衡系统(温控阀、水力平衡阀、泵、管道等组件)达到平衡状态。

Hydronically balanced cooling systems work energy-efficiently and offer good comfort.

水力平衡可提高系统能效,并提升舒适度。

The planning fundamentals such as supply and return temperature, volume flow and differential pressure can actually be maintained in operating condition. The high-efficiency pump works efficiently.  Almost constant return temperatures ensure that the cooling unit works optimally. The cooling capacity arrives where it is needed. There neither is an oversupply nor an undersupply.


Thus, misadjustments such as

因此,如下几种失调情况均可被解决

  • decrease of the supply temperature 供应温度降低
  • too high volume flows and as a result wrong return temperature 过高流量和错误的回程温度
  • undersupply of hydronically unfavourably arranged consuming points 共给不足的水量,不合理的消耗点
  • oversizing or wrong setting of the circulation pump  循环泵的扩界或安装错误

are avoided.

As the investment costs are low compared to other measures such as the refurbishment of the building cover, there is a very good benefit/cost ratio.

此方法比翻新建筑物等其他方法投入资金少,因此是性价比非常好的选择

Without hydronic balancing
水力失调

  • unnecessary high energy consumption 不必要的高能耗
  • overheated or undercooled rooms 过热或过冷的室温
  • bad efficiency of the cooling unit 制冷单元的低能效
  • flow noises at the valves 阀门的流体噪音
  • oversizing or wrong setting of the circulation pump 循环泵的扩界或安装错误
1 水力失调状态下的空调制冷系统
With hydronic balancing
水力平衡

  • saving of energy 节能
  • optimum room temperatures 最优室温
  • good system efficiency (optimized efficiency of the cooling unit) 良好的系统能效(制冷单元最优能效)
  • no flow noises 无流体噪音
  • ideal controllability of the system 可控的理想系统
2 水力平衡下的空调制冷系统