Why are balance valves used in air conditioning systems?

Thread Content

This post was last edited by Desert Fish on 2012-6-29 20:23. Due to differences in the lengths of the pipes in various loops of the air conditioning system as well as the pressure drops required at the endpoints, flow (split flow?) occurs ) And the distribution cannot meet the design requirements, resulting in hydraulic imbalances that cause uneven temperatures within the system. In cold seasons, users near the pump room will be too hot while those farther away will be too cold, so people raise the heating temperature. Remote user room mixing (temperature? ) to meet the requirement, and users near the boiler will open the windows. During the hot season, similar things happen with air conditioners. It’s just too cold near the water pump, while it’s too hot in other areas. Management agencies spend a great deal of money addressing issues related to indoor climate, yet even with the most advanced technologies, these problems still persist. These problems are very common. Increasing or decreasing the temperature by 1 degree in a single room makes little difference in terms of human comfort or energy consumption. But. When the average temperature of the entire building is incorrect, the costs become high – by 1 degree above 20 degrees. Heating costs have increased by at least 5% to 8%. When the temperature is 1 degree lower than 23 degrees, the cooling cost increases by 10% to 16%. When the system is operating at full capacity, due to static hydraulic imbalances within the system, the pump’s operating point cannot remain at an efficient level; this results in high flow rates and small temperature differences during operation. Some people believe that in air conditioning design, hydraulic imbalances can be resolved through thorough calculations and careful selection of equipment. Theoretically, this is true; but in practice… This is just what people expect. Pipelines, water pumps, and users – if one element in this chain (system) is not considered properly, the other components will not be able to operate at their optimal level. Although taking some safety factors into account when designing devices can prevent problems from arising. In fact, even if some problems can be solved in this way. But it will cause other problems. Especially the control side. It is inevitable when the actual size of the equipment used is too large, as the equipment must be purchased from the existing market options. They generally differ from the design parameters. Moreover, during the design phase, the properties of some components are unknown. This is because the contractor selected them only in the final stage. Therefore, to obtain the desired water flow rate, measurements and adjustments must be made. This is why balancing the water system is so crucial. Performance and features of the balance valve: 1. Ideal regulating performance. 2. Excellent shut-off function. 3. Opening position indication accurate to 1/10 turn. 4. Theoretical flow characteristic curve is a equal percentage characteristic curve. 5. **Patented locking mechanism for opening and closing. 6. A fixed flow coefficient exists for each full turn; by measuring the pressure difference across the valve during calibration, it is possible to easily calculate the flow rate through the valve. 7. Seals made of PTFE and silicone ensure reliable sealing performance. 8. The internal components are made of YICr18Ni9 or copper alloys, offering strong corrosion resistance and a long service life. 9. Internal lifting valve stem eliminates the need for additional space for operation. 10. It is a combination valve. Therefore, choosing a balance valve is the ideal and essential choice for air conditioning systems!