European flow balance valve to improve the heating system
Heating is a must for most of our northern urban residents. In order to meet the sustainable development of the socialist market economy, speed up energy conservation in buildings and improve people's living standards, the eight ministries and commissions such as the Ministry of Construction issued the Guidance on Pilot Reform of Urban Heating System in July 2003, marking the development of China's cities and towns The pilot work on the reform of the heating system has begun in an all-round way. Heating system reform mainly in three aspects: the hot system reform; heat billing reform; heating enterprise reform. A series of government heating reform measures will surely promote the rapid development of heating radiator related industries. In line with the heating system reform in energy-saving, heat metering, charging the implementation of a radiator thermostatic valve and related products worth mentioning. Radiator temperature control valve is installed on the radiator automatic control valve. The control element is a warm pack, filled with temperature-sensitive substances, when the room temperature increases, the expansion of the warm pack valve is closed, reducing the radiator hot water supply, when the room temperature drop the opposite process, so that you can reach the control temperature purpose. Radiator temperature control valve can also adjust the set temperature, and according to set requirements automatically control and adjust the radiator hot water supply. Temperature control valve development is the key part of the temperature control part of the temperature sensor within the temperature sensing medium to feel the outside temperature and make the appropriate response to control the opening of the valve to control the flow through the temperature control valve. Temperature sensors are filled with liquid refrigerant, gas refrigerant, and paraffin several. The control accuracy of the liquid as the best, the gas followed, the worst paraffin. Working fluid filled with liquid or gas working fluid sensor life of more than 20 years, the working life of paraffin sensors in about 5 years. Radiator temperature control valve with built-in pre-set device points two-way valve and three-way valve two categories, respectively, for two-pipe system and single-tube system. The preset temperature control valve is used in a two-pipe system to overcome the vertical imbalance caused by the liquid gravity in the system. The three-way valve is advantageous in the water quantity between the radiator branch pipe and the pipe passing through the pipe in a one-pipe system due to the small resistance distribution. Due to the large temperature difference between supply and return, the required heat sink area smaller, while the smaller size of the pipeline and valves can be used, double pipe system installed in the radiator temperature control valve, it becomes a variable flow system. The single-tube system due to the installation of radiator temperature control valve need to add bypass pipe. Therefore, whether it is equipped with radiator thermostatic valve, is basically a constant flow system. If the heating system is a variable flow system, the frequency converter can be used to control the speed of the pump to change the amount of circulating water. When the circulating water volume is reduced by 50%, the power consumed by the equipment can theoretically be reduced by 87.5%. Therefore, after using the radiator thermostatic valve, the two-pipe system can achieve additional savings in power consumption. If the room is a single-tube system circulating pump, with the frequency converter is meaningless. The two-pipe system was not promoted in the past mainly because of the vertical hydraulic imbalance caused by gravity in a two-pipe system that can not be solved in buildings of over three floors or in tall buildings. Built-in preset device radiator temperature control valve to solve this problem. Through the valve head within the temperature control button pre-set the required indoor heating temperature, the user can also adjust the knob at any time to adjust the heat, reduce unnecessary energy consumption, to save energy to create the conditions for energy-saving change Practical action that is actionable. In the current installation of radiator temperature control valve in the building, the practice proved that the vertical temperature imbalance can be generally solved, the system is working well, and to achieve the indoor temperature control. However, because the hot billing has not really been implemented, the user does not have enough energy-saving awareness to automatically adjust the set temperature, or the valve is usually set at the highest temperature point, so for the radiator thermostatic valve can save much energy, dynamic adjustment There is still no practical basis for the influence of the external network, how the system is matched and controlled, and the design scheme is not yet mature enough. After the actual implementation of the billing system with heating billing, end users can adjust their room temperature according to their needs. At present, the temperature control devices in Europe are no longer satisfied with the simple temperature control function and pay more attention to the flow balance of the overall heating system, so as to provide a more comfortable living and working environment for end users while more effectively saving energy. From the mid 90s of last century, Europe began to promote the flow balance valve, the German company Gamble in 1994 applied for VarioQ flow balancing valve technology patents. So far VarioQ flow balance valve in Europe and the United States developed countries have been very common application. VVOQ series of balanced temperature control valve, in addition to the VVO series of functions, but also increased the flow measurement and balance functions for regional pipe network management provides a more efficient management tools. It uses a special structural design, through sophisticated metering orifice and precision measuring instruments to measure the actual heating flow, so that the system automatically, quickly and accurately balance the adjustment, the system can save circulation pump energy consumption and reduce the overall system balance Valve investment, reducing the workload of the system to balance the pressure offset by the temperature offset to reduce the unbalanced noise, improve the comfort of the room, and more timely detection and correction of system disorders, while VarioQ also be able to run in the system Clean up the accumulated water from hot water. As a result, VarioQ still operates safely and efficiently with poor water quality in the heating system. The product is patented in Germany and fully complies with the most stringent EN215 standard in Europe. It is the world's most advanced radiator temperature control device one. Germany's use of energy-saving radiator matching temperature control valve has 40 years of history, saving 30%, even more rare is the use of temperature control valve to enhance the end-user awareness of energy conservation. When energy-saving environmental protection has become the concept of people's lives, but also human blue sky is no longer a dream blue sky.
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