How to effectively deal with air conditioning water system balance pneumatic valve

automatic constant differential pressure pneumatic valve + electric pneumatic valve is used to solve the air conditioning water system balance is a very good method, when the pressure of the system changes, the constant differential pressure pneumatic valve can by changing the flow area of their own to make electric adjustment at the ends of the pneumatic valve differential pressure remains the same, make adjust the CV value is always a of pneumatic valve, to ensure that electric regulating pneumatic valve have been running under the ideal condition, the change of quantity of truly only related to temperature and has nothing to do with the pressure, can guarantee into air conditioning tank of water at any time is the amount of water you need. Cluster and make the system performance is superior, it is more convenient to maintain.

at the end of the system using automatic constant differential pressure pneumatic valve + electric pneumatic valve can save a lot of use in hierarchical control in the balance after pneumatic valve, so you can make the system performance is superior, it is more convenient to maintain.

automatic constant differential pressure pneumatic valve + electric pneumatic valve is important guarantee of hydraulic balance in variable flow water system, the system used in the automatic balance PI regulating pneumatic valve can bring many benefits for you.
　　
　　. Because do not need to be system debugging, so save a lot of trouble, save a lot of time, shorten the completion date. 。 Because don't have to use pneumatic valve group and for hierarchical control of pneumatic valves, so for you to save more pipes, insulation materials and installation costs and time.
　　
　　. Make the water system in balance every moment of the day, so whatever construction or equipment installation stage stage use will not affect the balance of the water system.
　　
　　. Even if the project late or put into operation after the need to change some areas due to change certain USES water system design, also won't affect other parts of the water system design, more will not affect other regional water balance system.
　　
　　. Because the whole system is in a state of dynamic balance, refrigerating unit and water pump will be running in the most energy saving status, save a large amount of operating maintenance.
　　
　　. Due to the flow balance of the system is automatic, make more convenient installation and maintenance, and to eliminate the human error may balance.

automatic balance PI regulating pneumatic valve compared with static balance of the pneumatic valve

static balance pneumatic valve is actually an can artificially precise set of opening by the pneumatic valve, he artificially adjust the local resistance to solve the problem of air conditioning water system pipe section of hydraulic balance. At the beginning of system debugging, the system all pneumatic valves in a certain opening, debugging personnel according to the mathematical model of the original one by one for each static balance pneumatic valve in the opening set, Pneumatic valve opening is set after a certain value) , but on different water system is definitely not the same as the resistance distribution curve, and cannot be measured.

so, static balance pneumatic valve can only be vague, qualitative control of water flow. For a variable flow water system, the change of quantity of each air conditioning box is random, the change of the whole pipeline system pressure is also unpredictable, regulating pneumatic valve opening change is random. So we from formula

G ( Traffic) =CV*A（ Pneumatic valve flow area) *△P ( Pneumatic valves at the ends of the pressure difference) Can be concluded that:

due to the static balance after pneumatic valve adjusted the opening for a certain value. Therefore, at the ends of the pneumatic valve differential pressure changes, is bound to cause by static balance of the pneumatic valve flow is also changing. So in a variable flow system when the system pressure change static balance pneumatic valve is unable to solve the problem of hydraulic misadjustment. Still can cause system flow and less flow.