Automatic constant pressure differential valve + electric control valve is a very good method used to solve the balance of air conditioning water system. When the pressure of the system changes, the constant pressure difference valve can make the two ends of the electric control valve by changing its flow area. The pressure difference remains the same, so that the CV value of the regulating valve is always one, so as to ensure that the electric control valve has been operating under the most ideal conditions. The real change of the water quantity is only related to the temperature and has nothing to do with the pressure, and it can ensure that the air conditioner enters the air conditioner. The amount of water in the tank is the amount of water you need at any moment. So that the system's performance is more superior, more convenient maintenance.
The use of automatic constant pressure differential valve + electric control valve at the end of the system can save the use of a large number of balancing valves used in the hierarchical control, so you can make the system performance is more superior, and maintenance is more convenient.
The automatic constant pressure differential valve + electric control valve is an important guarantee for the hydraulic balance of the variable flow air conditioning water system. Using the automatic balanced proportional integral control valve in the system can bring you numerous benefits.
1. Because it does not require system debugging, it saves a lot of trouble, saves a lot of time, and shortens the completion date;
2. Because you don't need to use valve group and valves for layered control, you save more pipes, insulation materials and installation cost and time;
3. The water system is always in a balanced state, so whether the installation of the installation phase or the use of equipment by stages will not affect the balance of the water system.
4. Even if the water system design of certain areas needs to be changed due to the change of certain uses later in the project or after it is put into operation, it will not affect the water system design of other areas, and it will not affect the water system balance of other areas. 5. The system is in a state of dynamic equilibrium, so the refrigeration unit and the water pump will run in the most energy-saving state, saving a lot of operation and maintenance costs.
6. As the flow balance of the system is automatically performed, the installation and maintenance are more convenient, and the possibility of man-made mistakes to destroy balance is eliminated.
Comparison of Automatic Balance Proportional-Integral Control Valve and Static Balance Valve The static balance valve is actually a kind of globe valve that can accurately set the opening degree. It solves the problem of hydraulic balance in the piping part of the air-conditioning water system by manually adjusting the local resistance. .
In the initial debugging of the system, all the valves of the system are at a certain opening. The commissioning personnel set the opening degree of each static balancing valve one by one according to the original mathematical model (the valve opening is a certain value after the setting). However, the resistance distribution curve for different water systems is absolutely different and cannot be measured. Therefore, the static balance valve can only be fuzzy and qualitatively control the flow of water. For a variable-flow air-conditioning water system, the change in water volume of each air-conditioning box is random, and the pressure change of the entire piping system is unpredictable, and the opening of the control valve is also changed randomly. Therefore, we can draw from the formula G (flow) = CV * A (valve flow area) * â–³ P (differential pressure across the valve):
Since the static balance valve is adjusted well, the opening degree is a certain value. Therefore, changes in the pressure differential across the valve will inevitably result in changes in the flow through the static balancing valve. Therefore, in a variable flow system, the static balance valve cannot solve the hydraulic imbalance problem when the system pressure changes. It will still cause system over-current and under-current.
The use of automatic constant pressure differential valve + electric control valve at the end of the system can save the use of a large number of balancing valves used in the hierarchical control, so you can make the system performance is more superior, and maintenance is more convenient.
The automatic constant pressure differential valve + electric control valve is an important guarantee for the hydraulic balance of the variable flow air conditioning water system. Using the automatic balanced proportional integral control valve in the system can bring you numerous benefits.
1. Because it does not require system debugging, it saves a lot of trouble, saves a lot of time, and shortens the completion date;
2. Because you don't need to use valve group and valves for layered control, you save more pipes, insulation materials and installation cost and time;
3. The water system is always in a balanced state, so whether the installation of the installation phase or the use of equipment by stages will not affect the balance of the water system.
4. Even if the water system design of certain areas needs to be changed due to the change of certain uses later in the project or after it is put into operation, it will not affect the water system design of other areas, and it will not affect the water system balance of other areas. 5. The system is in a state of dynamic equilibrium, so the refrigeration unit and the water pump will run in the most energy-saving state, saving a lot of operation and maintenance costs.
6. As the flow balance of the system is automatically performed, the installation and maintenance are more convenient, and the possibility of man-made mistakes to destroy balance is eliminated.
Comparison of Automatic Balance Proportional-Integral Control Valve and Static Balance Valve The static balance valve is actually a kind of globe valve that can accurately set the opening degree. It solves the problem of hydraulic balance in the piping part of the air-conditioning water system by manually adjusting the local resistance. .
In the initial debugging of the system, all the valves of the system are at a certain opening. The commissioning personnel set the opening degree of each static balancing valve one by one according to the original mathematical model (the valve opening is a certain value after the setting). However, the resistance distribution curve for different water systems is absolutely different and cannot be measured. Therefore, the static balance valve can only be fuzzy and qualitatively control the flow of water. For a variable-flow air-conditioning water system, the change in water volume of each air-conditioning box is random, and the pressure change of the entire piping system is unpredictable, and the opening of the control valve is also changed randomly. Therefore, we can draw from the formula G (flow) = CV * A (valve flow area) * â–³ P (differential pressure across the valve):
Since the static balance valve is adjusted well, the opening degree is a certain value. Therefore, changes in the pressure differential across the valve will inevitably result in changes in the flow through the static balancing valve. Therefore, in a variable flow system, the static balance valve cannot solve the hydraulic imbalance problem when the system pressure changes. It will still cause system over-current and under-current.
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